FR2942886A1 - Images acquiring device for e.g. multiscopic restitution device, has positioning units are arranged such that positions of optical centers and acquiring zones are in proportions defined by defining parameters of acquiring configuration - Google Patents

Abstract

The device has a support (S) with positioning units (M) positioning an optics (OPi) of pair of optical sensors (COCi) in a plane (PCi) perpendicular to optical axes (AOi) and optoelecronic sensors (Vi) in a plane (PVi) parallel to plane of optical center (Ci). The positioning units are arranged such that positions of the optical centers and acquiring zones are in proportions defined by defining parameters of acquiring configuration (25). The parameters is dependent of configuration parameter defining a deformation for the effect and an acquisition geometry and restitution parameters deducing dimensions of an effective zone of a restitution device and privileged observation position for the device. An independent claim is also included for a method for verifying a utilization of a device for acquiring multiple images to recreate the image on multiscopic recreating device.

Description

The present invention relates to a device for simultaneous capture of a plurality of nxm images of any real scene, the capture of a plurality of nxm images of a real scene of any kind, views being made according to a set of parameters defining a capturing configuration of this scene, with a view to its reproduction (display, projection, printing ...) in relief on a multiscopic device, with lo control of its deformation. In particular, the invention relates to the production of shots using a plurality of pairs of optics and optoelectronic sensors, thanks to a capture configuration providing relief in relief, with a control of the deformation of the relief. , on a multiscopic rendering device. The invention also relates to the processing of the information delivered by these couples in order to create a combination of images (or a sequence of combined images or sequences of image sequences), which can be displayed on multiscopic reproduction devices, in adapting this combination to the device (s) concerned. The invention applies in particular, but not exclusively, to real-time (or delayed) broadcasting of still and / or animated images on multiscopic screens. The present invention makes it possible to capture (or capture) one or more multiscopic set (s) coherent (s) of nxm still or moving images of any real scene, intended for display, projection or projection. multiscopic printing for a 3D rendering of the scene, with a control of the deformation of the relief during the restitution, thanks to the capture configuration. The invention applies in particular, but not exclusively, to the restitution of still or moving images (live or delayed) on multiscopic devices such as, for example, projection systems, screens or stereoscopic displays, autostereoscopic or so-called integral imaging, as well as lenticular photographs. Moreover, some of these targeted rendering devices can be coupled with means of direct interaction (keyboard, mouse, 3D pointer, 6D mouse, etc.) or indirect means (tracking or tracking) that can control some of the parameters of the generation of the capture configuration and thus make this configuration interactive. For example, the invention also applies to videoconferencing systems using multiscopic reproduction devices to which the capture device according to the invention provides a plurality of captured images adapted to their return by these multiscopic devices. PRIOR ART In general, it is known that the diffusion of visible relief images with or without glasses makes use of technological devices known as stereoscopic, auto-stereoscopic, or even integral imaging. All these devices operate a spatial, optical, colorimetric and / or temporal mixing on the same rectangle of several images of a scene taken from different points of view. The present invention is adapted to these various types of device by providing the capture of nxm images. A technological device (for example anaglyph, colored filters, optics, prisms, mirrors, shading glasses, polarizing film and polarized glasses, parallax barrier or lenticular network in particular) makes it possible to physically and / or temporally separate the images reaching the eyes. one or more spectators. In the case in particular of stereoscopic systems with colored glasses, active or polarized, this separation of images can be performed within a single optical beam regardless of the position of the viewer in this beam. The device 3o then uses only 2 images (n = 2, m = 1) which are transported by this same optical beam and then physically separated (polarization, color ...) or temporally (occultation) by the glasses of the spectator. On the other hand, in the autostereoscopic devices in particular, the separation is operated at the rendering device for use without glasses. In these latter cases the different images are rendered in separate optical beams which are for example organized in a horizontal fan of n images (in this case n> _2 and m = 1). This horizontal fan is substantially perpendicular to the columns of the device, assumed substantially perpendicular to the lines joining the eyes of the spectators. These optical beams can also be organized in a double horizontal and vertical fan (perpendicular to the lines of the device), which then gives a matrix distribution of n × m optical beams (n> 2 for the horizontal distribution, m> 2 for the vertical distribution) carrying each a distinct image. It will be understood that the invention is especially suitable for devices 15 which only mix optical beams organized in a vertical fan. Finally, the invention is also compatible with mixed systems that carry the nxm images via a smaller number of beams in which several images are mixed temporally (occultation) and / or physically (polarization, color, ...). These latter multi-stereoscopic solutions make it possible to transport one or more stereoscopic pairs of the same vertical rank intended for one or more distinct observers within the same bundle. The number of beams needed is therefore reduced (n'xm; n '<n). In the present application, reference is made to rows and columns of rendering devices or of the common base for designating the directions, respectively horizontal and vertical, of the pixel alignments composing the rows and columns of the images broadcast by the rendering devices. or captured by the capture areas parallel to the common base. Likewise, the term principal directions is also used to designate these directions, respectively, horizontal and vertical (for example, respectively, width and height).

Thus, all these known devices have as a general principle to operate a spatial mixing (horizontally - perpendicular to the columns of the device - or even vertically - perpendicular to the lines of the device -), optical, colorimetric and / or temporal of a set of nxm images (n> _2 for the horizontal distribution, m> _1 for the vertical distribution) to diffuse them simultaneously and / or alternatively within one or more (n = 1 <_n '<_ n and m> _1) optical beams such that each eye of a viewer correctly positioned vis-à-vis the lo device receives a coherent image (one of the initial images and not a mixture of these images) different from that which receives the other eye . Undeformed stereoscopic perception requires alignment of the eyes parallel to the device. Since the columns of the device are already assumed to be orthogonal to the eye lines of each viewer, these lines of the eyes must all be parallel to the lines of the device. On the other hand, autostereoscopic systems generally dictate (horizontal distribution only) or more (matrix distribution) horizontal chains of privileged eye positions (ensuring correct separation of one of the mixed images) which are then aligned on one or more lines parallel to the lines of the device. This arrangement also applies formally, in a reduced configuration (a chain of 2 positions), in the case of stereoscopy since the line of the eyes must be parallel to the lines of the device. By feeding such a device with images of the same real scene captured from well-chosen distinct points of view and according to adapted projective geometries, a correctly positioned spectator thus receives two distinct images of this scene which form a real stereoscopic pair allowing to his brain to perceive the scene in relief. Thus, each eye of each viewer receives an image physically coming from the same area of the rendering space (generally rectangular) which corresponds to the useful area or image area of the rendering device. What is different is that all these pairs of eyes are not located in the same place and thus observe the useful area of the device along different axes of sight.

A major problem in the field of multiscopia from still images or animated, real and / or virtual is the fact that the return of these images by flat multiscopic devices involves the coplanar mixing of these images. These images transmitted by the device are not all orthogonal to each line of sight of users (axes between each eye and the center of the useful area of the device). The restitution of the images is done according to pyramids whose common base is formed by the useful zone of the device and whose vertices are the eyes of the users. The axes of vision are not necessarily all orthogonal to the plane of the image observed, the restitution of these images induces trapezoidal deformations if it has badly (or not) been taken into account of these renditions of bias during the capture of the images. images. This has 2 direct consequences: Problem P1: If these trapezoidal deformations are not similar for the 2 images perceived by an observer, the stereoscopic pairing by the brain is more delicate, even impossible, which reduces or cancels the perception of the relief . This is what is commonly called stereoscopic epipolar constraint, that is to say, the need, to allow stereoscopic matching, that the two projections of the same point of a scene on each of the images of the stereoscopic pair are restored on the multiscopic device so as to be coplanar with the 2 eyes of the observer. When the restitution (as is our case) imposes eyes parallel to the lines of the device, this translates into the necessity that the 2 images of the same point are restored on the same line of the device. This condition is necessary for the perception of relief (which derives from this epipolar constraint). For a flat multiscopic restitution, this implies choosing, for the 2 images intended for the same observer, capture pyramids supported on a common rectangular base in the scene and whose vertices are arranged on a line parallel to the lines of this common base. . For situations of collective restitution of the same scene (multi-view autostereoscopic devices in particular) that share views between several observers or potential observation positions within one or more key position chains, it is necessary to extend this common base. to all the recordings intended for the same channel, or even all the channels if one wishes a coherence between the restitutions on the different chains. Thus, the axes of sight are therefore necessarily convergent in the center of this common base, and the tops of the pyramids must form, 2 to 2 (by observer or selected observation position), lines parallel to the lines of the common base. Each image string must therefore be picked up from aligned positions on a straight line parallel to the common base. Moreover, for the capture zones supported on these pyramids, and therefore the images they capture, to remain rectangular, they must be parallel to this common base. P2 problem: If, for the images intended for a given position, the capture respects the common base configuration and optical centers on a line parallel to this base, the perception of relief is guaranteed. However this does not imply that the perceived relief remains consistent with the relief initially captured. Indeed, the absence of deformation during the restitution further requires a perfect similarity image by image, capturing pyramids with the pyramids restitution (same horizontal and vertical opening angles, same angles between the main axis and the rectangular base). In case of non similarity of the pyramids of capture and restitution (but in the respect of a geometry of capture ensuring the perception of relief), the perceived relief corresponds to a complex deformation of the relief initially captured. This distortion may be desirable to implement certain special effects in certain uses, as it may be undesirable in other applications. Obviously, this implies that captation and restitution must be carried out in a coherent manner, whether or not a deformation of the perceived relief is desired.

Known devices are proposed in a convergent scheme without a common base for the capture pyramids. It is known in particular applications FR 2 909 778 and WO 2008 081115 filed by the applicant of the present application, which relate to solutions using a physical distribution of a plurality of optoelectronic sensors on a circular arc whose radius corresponds to the distance ~ o between the optical center of each of the sensors and a point of the captured scene on which is carried out the development of at least one of said sensors called reference sensor and to which the sensors are oriented convergently. Other known devices have multiple optoelectronic sensors on a line while converging is their axes of sight at a point in the scene. All of these convergent devices de facto propose capture systems manifesting the problem P1 above unless a systematic trapezoidal correction of the images before use, which is not desirable since it increases the chain of treatment and produces a qualitative degradation images returned.

Positioning of the invention To enable a multiscopic rendering providing a perception of relief that is consistent with the expected relief (or desired), it is necessary to properly configure the capture configuration used by the capture device. Certain applications of the multiscopic visualization of a real scene require either the assurance of a faithful reproduction of the relief, or to control the deformations involved for this relief to obtain effects a priori chosen or accepted in all knowledge. The solutions of the prior art allow a relief rendering but have the disadvantage that this lo relief is not controlled and therefore not necessarily true to the scene and / or the will of the operator. It is precisely this technical problem, not addressed by the prior art, that this invention makes it possible to solve by proposing a control of the deformation (or the absence of deformation) of the relief by a capture configuration making it possible to bring coherence together. 1s capture and retrieval geometries and allowing the capture device according to the present invention to obtain shooting adapted to a relief in relief with a controlled deformation. The images generated by the capturing device, once adequately mixed according to the characteristics of the playback device 20 (any but previously chosen and characterized) can be displayed, or printed, or projected, using, or on , this restitution device and allow, for an observer gifted with stereoscopy and properly positioned relative to the device, to effectively perceive the scene in relief, with, moreover, a perception without deformation or with a selected or controlled deformation. One of the aims of the present invention is to overcome certain drawbacks of the prior art by proposing a device for simultaneous capture of a plurality of cohesive shots between them, with a view to rendering, with controlled relief rendering, on a multiscopic rendering device.

This object is achieved by a device for simultaneous capture of a plurality of nxm shots intended for relief restitution on at least one multiscopic rendering device, characterized in that: - the capture is carried out with the aid of a plurality of nxm optical-sensor couples formed by nxm optical each having an optical axis and an optical center, mounted on at least one support, whose optical axes are parallel to each other and each associated with a ptoelectronic o sensor, mounted on the support and in which is defined a capture area in which the projection of the scene io is provided, - the support comprises means for positioning the optics in at least one plane perpendicular to the optical axes and / or sensor positioning means in the less a plane parallel to the plane of the optical centers, the positioning means of the sensors and / or optics of each optical-sensor pair are arranged so that the positions of the optical centers and the capture areas are in proportions defined by definition parameters of a capture configuration which depend on: at least one configuration parameter, defining a desired deformation for the relief effect and / or a capture geometry, the capture providing a projection of the scene on the nxm capture areas of the nxm sensors, through nxm pyramidal optical pickup beams 25 supported on a rectangular base common to the nxm optical beams and disposed in the a scene to be captured, the nxm beams each passing through one of the nxm centers of optics aligned, in batches, on one or more line (s), called straight alignment centers, parallel (s) to one of 30 main directions of this common base, the catchment areas corresponding to the intersection of these optical beams with at least one plane parallel to this common base, the axes of aim or principal axes of nxm optical beams, passing through their center of their optics, converging all towards the center of the common base, - restitution parameters, defining or allowing to deduce at least the dimensions of a chosen useful zone of the rendering device and the preferred observation positions chosen for the rendering device. According to another particularity, the configuration parameter (s) comprises at least one set of parameters among the following sets of parameters: a set of parameters, called internal parameters, of capture directly defining the capture geometry by at least the positions, vis-à-vis a specific reference to the capture device, optical centers aligned on the straight line (s) alignment of the centers and the positions of the capture zones, parallel to each other and oriented so that their lines are parallel to these lines of alignment of the centers, • a set of parameters, called external, capturing parameters 20 defining or making it possible to identify the geometry of capture from the point of convergence, by at least the dimensions of the common base centered on the point of convergence, the positioning of the alignment line or lines of the centers, the positioning of the optical centers on these alignment lines 25 centers and the position of the planes parallel to the common base containing the catchment areas. A set of deformation parameters defining possible deformations for the relief rendering of the scene.

According to another particularity, the parameter (s) of configuration comprises (nt) a parameter defining a relief rendered without any deformation with respect to the relief of the captured scene. According to another particularity, the configuration parameter (s) comprises (s) data representative of at least one parameter among the following deformation parameters, defining transformations between the initial space of the scene and the space of restitution and defined either individually for each observation position n ° i, either in batches or globally, by: • at least one factor k; of overall magnification and in particular at depth, • at least one parameter s; control of potential nonlinear deformation (which transforms a cube into a truncated pyramid), • at least one rate p; relative magnification of width versus depth or desired horizontal anamorphosis factor / depth, • at least one rate p; relative magnification of the desired height versus width or vertical / horizontal anamorphic factor, • at least one rate y; horizontal shearing of the perceived relief, • at least one rate b; vertical shearing of the relief perceived by a plunging observer in accordance with that expected. According to another particularity, the configuration parameter (s) comprises (nt) the following external parameters of capture geometry: at least one parameter defining, relative to the common base, the positioning of the line (s) ) of alignment of the centers, at least one parameter defining the positions of the optical centers on these alignment lines of the centers, at least one parameter defining directly or indirectly the dimensions of the common base, at least one parameter defining the precise position of each plane parallel to the common base carrying at least one capture zone. According to another particularity, the configuration parameter (s) comprises (nt) the following internal capture geometry parameters: at least one parameter defining the positioning of the optical centers with respect to a reference specific to the capturing device, at least one parameter defining the orientation of the axis of view of each projection pyramid, at least one parameter defining the geometry of the effective projection pyramid of each capture zone. According to another particularity, the positioning means are preconfigured in the factory according to a configuration defining a relief rendering determined for a determined restitution device. 1s According to another feature, the device comprises data processing means executing a configuration module determining the parameters for defining the capture configuration by the positions of the capture areas and the optical centers to be used according to the configuration parameters and restitution parameters, from 20 choices made by an operator, via a human / machine interface of the device. According to another particularity, the configuration module is arranged to allow the operator, via the man / machine interface, to enter and / or select and / or adjust at least one configuration parameter and the restitution parameters. among a plurality of parameters from storage means accessible to the configuration module, the latter generating the configuration according to the choices of the operator. According to another particularity, the configuration module is arranged to allow the operator, via the man / machine interface, to select at least one capture configuration from among a plurality of previously calculated configurations originating from storage means accessible to the user. configuration module. According to another particularity, the positioning means are manual.

According to another feature, the positioning means are motorized. According to another feature, the positioning means are motorized and controlled by the configuration module. According to another particularity, the settings of the positioning means are made dynamically by the configuration module during capture, from parameters from the storage means and / or the user interface and defining the minus a time reference for the change of the definition parameters of the positions of the optical centers and the capture zones. According to another feature, the device comprises processing means arranged to synchronize the shots by the nxm optical couples-sensor. According to another particularity, the device comprises processing means arranged to shift the transmissions, for a live mixing, of the nxm optical-sensor couples, at least as a function of a latency time determined according to technical characteristics of the rendering device, for generating one or more image (s), or sequence (s) of images, suitably mixed for their reproduction on the rendering device. According to another feature, the device comprises processing means arranged to perform a spatial and / or colorimetric and / or temporal mixing of the captured images, intended for a multi-point of view reproduction device, according to the parameters defining the characteristics 3o of the restitution device.

According to another feature, the positioning means are arranged to also allow the adjustment of the orientation of the sensors, in rotation about an axis orthogonal to their plane and passing through their center. According to another feature, the device comprises processing means arranged to carry out a photometric and / or colorimetric and / or geometric correction of each of the nxm optical-sensor couples from data from storage means accessible by these processing means and representative of reference values acquired previously during a photometric and / or colorimetric and / or geometric calibration, to correct any defects in the sensors and / or optics. According to another feature, the device comprises processing means arranged to perform a photometric and / or colorimetric and / or geometric correction of each of the nxm optical-sensor couples from data representative of reference values acquired on the scene to be captured, under the control of the processing means, and depending on the photometric and / or colorimetric and / or geometric conditions in which the scene is captured. Another object of the present invention is to provide a method 20 for verifying the use of a device according to the invention for capturing a plurality of shots. This object is achieved by a method of verifying the use of a device according to the invention, for capturing a first set of nxm shots of a scene, characterized in that it comprises the following steps : 25 - capture of a second set of nxm shots of the same scene with a device according to the invention, - temporal and / or colorimetric and / or spatial mixing of the images of the first game with those of the second game, - display the result of the mixing, - observation of the displayed result to deduce, in case of temporal stability and / or spatial coherence of the image, the use of the device according to the invention for capturing the first set of nxm images. DESCRIPTION OF THE INVENTION Other features and advantages of the present invention will emerge more clearly on reading the following description, made with reference to the appended drawings, in which: FIG. 1 represents a pick-up device according to certain Embodiments, FIG. 2 represents an image capture configuration of a scene used by the device according to certain embodiments of the invention, FIG. 3 schematically represents in perspective the capture geometry used in the configuration. according to one embodiment of the invention, - Figures 4A and 4B show, respectively, a front view and a top view of the capture geometry used in the configuration according to one embodiment of the invention, FIG. 5 schematically represents a perspective view of the restitution geometry on a multiscopic restitution device, of a pl The present invention relates to a device producing a coherent plurality of taken views of the same real scene, for the relief rendering of this scene with a relief. without deformation or controlled deformation on any multiscopic restitution device previously chosen by an operator. The term operator is used here to designate the person deciding the parameters to be applied for capturing, that is to say the user of the device according to the invention. It will be noted here that the capture of the images by the device according to the invention is carried out according to a capture configuration which depends in particular on the technical characteristics of at least one multiscopic reproduction device chosen, as detailed below. Several multiscopic reproduction devices may have identical technical characteristics and the configuration used for capturing, as well as the images obtained, may therefore be usable for several rendering devices. The term capture is used here to designate the acquisition of image (video, but also photo, possibly) to a real scene. The term restitution is used to designate the display, projection or printing of a suitable mix of captured images (which can be achieved by various types of multiscopic devices). The device comprises a plurality nxm of sensors (V;) which are each associated with an optical (OP;) having an optical center (C;), thus forming fs a plurality nxm of optical couples-sensor (COC;). By the term optical means here any optical focusing device (automatic focusing, auto-focus type or manual), comprising for example at least one lens or at least one lens. By the term sensor, is meant here any image capture device or image sequences (video), as for example Cmos (Complementary metal oxide semi-conductor, according to the English terminology) or the CCD sensors (Charge-Coupled Device according to the English terminology, or charge-coupled detectors). The invention proposes to configure the positioning of these optical-sensor couples so as to achieve a plurality of coherent images (image capture), allowing relief in relief with control of the deformation. For this, the invention provides (and defines) capture areas (ZC;) corresponding to the projection of the scene on at least a portion of the sensors (V;) and proposes to configure the positioning of the optical centers (C; ) and these capture areas (ZC;) to take coherent shots from one optical-sensor pair (COC;) to the other.

In this sense, the invention is placed in a framework that systematically solves the problem P1. It also uses an analysis of the problem P2 to propose a capture device allowing, according to various methods, to select a rendering device, then to define a capture configuration (consistent with this rendering device and possibly with the expected deformation), before acquiring the images of the real scene captured through the capture areas (ZC ;, i = (i ,, i2) E {1 ... n} x {1 ... m}) associated with the optical centers (C, i = (ii, i2) E {1 ... n} x {1 ... m}), previously defined, then to store and / or mix and / or transmit them, for example to multiscopic return to the designated device. This architecture makes it possible to ensure that the initial relief of the real scene will undergo, at the restitution, the expected or desired deformation. The person skilled in the art will understand that the index i is used in the present application with reference to various elements (C 1, ZC 2, etc.) or parameters (f 1, X 2, etc.) to designate the fact that the element or parameter (for which it appears in subscript) relates to the image number i to capture. Note that this term i may in fact correspond to a pair of values i1 (ranging from 1 to n) and i2 (ranging from 1 to m), as defined above by the expression i = (i1, i2) used for a matrix definition, but when it is necessary to define only one dimension (for example when the parameters are grouped according to m lots of n parameters), use only the term i2 ( or it possibly) to characterize a batch of parameters (for example, lot number i2, between 1 and m). In some embodiments, the capture device may be preconfigured according to a capture configuration defined for at least one determined restitution device, with a determined relief effect (with or without deformation). For example, the device may comprise m rows of n optical couples-sensors and be configured to capture nxm images by providing, during the restitution, a determined relief effect. In some embodiments, the positioning means (M) can therefore be pre-configured in the factory according to a configuration (25) defining a determined relief rendering for a given rendering device. Depending on the chosen reproduction device, a 1-row or multi-row capture device may be used and the invention provides various possible combinations with respect to the number of rows and the number of optical-sensor pairs per row. For example, the capture device may comprise a plurality of rows of optical couples-sensor. Depending on the chosen reproduction device, the capture device thus makes it possible to define the number m of rows and, for each row, the number n of optical-sensor pairs (in fact, for each row, the number n of optical centers and capture areas) that will be used for capture. Similarly, we can speak of columns instead of rows if we want to describe the device in a vertical rather than horizontal arrangement. In some embodiments, the device configuration will be adjustable for a plurality of pickup configurations, depending on the operator's choice. Whatever the embodiments, the device according to the invention captures the scene (according to a plurality of shots) according to a determined capture configuration (25) (either pre-configured or selected from a plurality previously established and presented to the operator, either generated directly by the device, depending on the operator's choice, using a configuration module). In some embodiments, the positioning means (M) are manual. Adjustment of the positions according to said 25 configuration capture (25) can be done manually. The configuration can then be presented to the operator (for example with a user manual or to a display device presenting the usable configurations) simply with positioning values that he will have to adjust on the device, to adjust the means (M) positioning optics and sensors. In variants of these embodiments, the manual positioning means may be motorized to facilitate manual adjustment by the operator (based on the configuration information presented to him). In some embodiments, the positioning means (M) are automated. In this case, the positioning means (M) are motorized and slaved to a configuration module (22) executed on processing means (11). These processing means may be included in the device according to the invention or be associated with it via a suitable connection. What is essential here is that these processing means (11) can control the device (depending on the configuration determined by the configuration module). Thus, in certain embodiments, the device comprises (or is associated with) data processing means (11) executing a configuration module (22) determining the parameters (25i) for defining the capture configuration (25). by the positions of the capture areas (ZC;) and the optical centers (C;) to be used according to the configuration parameters (23) and the reproduction parameters (21), from choices made by an operator, via a interface (13) man / machine of the device. In certain embodiments where the positioning means (M) are automated, the configuration module (22) may, for example, comprise an electronic or computer module, using a plurality of previously established configurations (25) (described in detail hereinafter). -after) from storage means (12) accessible by the configuration module (22). The configuration module (22) then allows the operator to choose a pick-up configuration (25) to be used via a human / machine interface (13) and controls the positioning of the optical-sensor pairs (COC) according to the configuration chosen by the operator. Thus, in these embodiments, the configuration module (22) allows the operator, via the user interface (13), to select at least one capture configuration (25) from among a plurality of predefined configurations originating from storage means (12) accessible to the configuration module (22).

In other embodiments where the positioning means (M) are automated, the configuration module (22) may be arranged to generate the capture configuration (25) from entered or selected (and / or adjusted) parameters. by the operator via the interface (13). These parameters are described in detail below with reference to various modalities. In this case, the module (22) calculates the configurations from the parameters chosen by the operator, as described in detail below. Thus, in these embodiments, the configuration module (22) allows the operator, via the interface (13) user, to enter and / or select and / or ~ o to set parameters (especially at least a configuration parameter (23) and reproduction parameters (21) described hereinafter), among a plurality of parameters from storage means (12) accessible to the configuration module (22), the configuration module (22) generating the configuration according to choices of the operator. Thus, the invention makes it possible, efficiently and without excessive excess cost, to generate multiple views (nxm images) of the same real scene whose joint use on any flat multiscopic device allows the effective perception of this scene by an observer correctly positioned relative to the multiscopic device. It is a question of systematically solving the problem P1 by choosing a capture configuration ensuring a projection of the scene on the nxm capture zones (ZC;), through nxm pyramidal optical beams supported on a base (BC) rectangular common to nxm optical beams and arranged in the scene to capture. It will be understood from reading the following description that this common base corresponds in fact to the framing of the shot, that is to say to the rectangle of the scene which will be restored precisely on the useful area of the device. restitution, or to the representation in the scene of the counterpart of this useful area of restitution. The nxm beams each pass through one of the nxm optical centers (C 1) aligned in batches on one or more straight lines (LC; 2) parallel to this common base (the two-dimensional numbering i = (il, i2) then makes it possible to say that each center C is positioned on the line LCi2 corresponding to its second index). These lines (LCi2) are referred to herein as straight lines (LCi2) of center alignment. For example, m lots of n optical centers (Ci) may be aligned on m straight (LCi2) alignment centers. The capture zones correspond to the intersection of these optical beams (capture pyramids) with at least one plane parallel to this common base. The axes of aim or main axes of the nxm pyramidal optical pickup beams, passing through their optical center, all converge towards the center (PS) of the common base. An illustrative example of this configuration (25) lo is shown in Figure 2 showing an example scene (a car) and the common base (BC) placed in front of it. With respect to this scene, the positioning of each optical center (Ci), as well as the dimensions and the positioning of the associated capture area (ZCi), form sets of parameters (25i) for defining the configuration of each pair ( COCi) optical-sensor No. i. These sets of parameters (25i) collectively define the configuration (25) capture and it is understood from this Figure 2 that this configuration (25) can be represented (illustratively and not limited) by pyramid beams (or pyramids of capture). These pyramidal bundles comprising a first series of pyramids 20 (only two shown in FIG. 2, no. I and j) whose bases correspond to the common base (BC) and whose vertices correspond to the optical centers (Ci and Cj, FIG. 2) and a second series of (inverted) pyramids whose vertices correspond to the optical centers (Ci and C ;, FIG. 2) and whose bases correspond to the capture zones (ZCi and ZCj, FIG. 2). This configuration is such that the axes of sight (AVi, Figure 2) converge at the center (PS) of the common base (BC) and that the capture areas (ZCi) are parallel to the common base (BC). The sighting axes (AVi) (or main axes) therefore all pass through the center (PS) of the common base (BC) and then through the optical center (Ci) and the center (Ii) of the capture area ( ZCi) of their associated sensor. Note also that the capture zones (ZCi) can be, in theory, positioned at any distance (fi) from the optical center (Ci) without consequences on the captured images and therefore on the relief of the relief, if they are defined as the intersection of at least one plane parallel to the common base with the capture pyramid involved. It is thus simpler to consider, in batches of aligned optical centers (that is to say at 12 fixed) or globally, all these capture areas as the intersections of the various pyramids with a single plane parallel to the common base and located at a fixed distance fie or f from the line (LCi2) of alignment of the optical centers (Ci), as represented in FIG. 2. It is thus clear that, in this example, the capture zones (ZCi) are aligned by batches on one or more lines included in this or these common plane (s) and parallel to the lines (LCi2) of alignment of the optical centers (Ci). In practice, the distances (fi) between the capture zones (ZCi) and the optical centers (Ci) are prescribed in particular by the focal lengths of the optics (OPi) used in the capturing device. It is therefore understandable that the geometric descriptions made here may in fact depend on the technical choices made with regard to the physical characteristics of the optics used: for example, it will be possible to choose identical optics on the same row, but different optics of a row. to the other, or various combinations within the reach of the skilled person. We thus see that a point (U) of the scene is projected on the capture zones (ZCi, ZCi, figure 2) at points (ui, ui, figure 2) whose position depends on the positions of the optical centers (Ci , Ci, FIG. 2) and the dimensions and positioning of the capture zones (ZCi, ZCi, FIG. 2).

In some embodiments, all the capture areas (ZCi) have the same dimensions 1, h (Figure 3) and are therefore positioned by their center Ii which is horizontally offset by a distance ai (Figure 3) and vertically from a distance ei (Figure 3) with respect to the optical axis (AOi), that is to say a straight orthogonal to the capture areas (ZCi) and passing 3o by the optical center (Ci). It will be noted that, in certain embodiments, it will be possible to have capture areas (ZCi) located at distances f 1 different from the straight line (LCi 2) of alignment of the optical centers (Ci) and therefore having different dimensions li, hi between them. It is therefore understood that the alignment of the capture zones is given here as an illustration to facilitate understanding of the capture configuration and that it is possible to use capture zones of variable dimensions and placed in several planes parallel to the common base (BC), at various distances from the lines (LCi2) alignment optical centers, but this complicates the configuration without constituting a real change. It will be understood that the choices concerning the alignment of the capture areas will depend on the choices made for the optics. FIG. 5 shows, by way of example, the analysis of the restitution geometry making it possible to define the characteristics of the device for which the images will be generated. In this FIG. 5, the point (U) displayed on the device (of center Ce) is perceived as a point (u) thanks to the images ui and u9i displayed on the screen and to their stereoscopic pairing by the brain of the observer (whose eyes are positioned in Oi and O9i). The number nxm capture areas (ZCi) may vary, for example, depending on the number of images expected by the multiscopic rendering device allowing its observation of several different points of view. However, the number of views captured may be different from the number of viewpoints rendered by the devices for which the capture is intended. For example, it is possible to capture fewer views than what the playback device is able to broadcast including if the number of viewers is limited. Conversely, it is possible to capture more views than the playback device can broadcast and to select the viewpoints that will be restored, for example according to the choice of the operator. These principles of architecture of the real capture system are necessary to solve the problem P1, but are not enough to obtain a relief with controlled relief since it is still necessary to analyze the problem P2 and in particular the relations between the characteristic angles of the pyramids of sighting and observation.

The present invention therefore relates to a device (1) for capturing a plurality of nxm images of a real scene, these nxm images being intended for restitution, with a determined relief effect (thanks to the invention), on at least a multiscopic reproduction device, the capture being provided by the projection of the scene on a plurality of nxm capture areas (ZC;) each associated with an optical center (C;). The capture is carried out using a plurality of nxm optical sensor couples (COC) formed by nxm optical (OP;) each having an optical axis (AOi) and an optical center (C;). These optics (OP;) are mounted on at least one support (S) and their optical axes (AOi) are parallel to each other. These optics (OP) are each associated with an optoelectronic sensor (V;) mounted on the support (S) and in which is defined a capture zone (ZC) in which the projection of the scene is provided. The support (S) comprises means (M) for positioning the optics (OP;) in at least one plane (PC;) perpendicular to the optical axes (A0i) and / or means (M) for positioning the sensors (V). in at least one plane (PV;) parallel to the (PC;) plane of the optical centers (C;), as shown in FIG. 1. According to various embodiments, the positioning of the sensors can be coupled to the positioning of the optics and the device 20 may therefore, in some cases, comprise only means for positioning the optics or sensors, the optics (OP;) and the sensor (V;) of each pair (COC;) moving in a coordinated manner. These positioning means make it possible to move the optics and the sensors in planes parallel to each other. According to various embodiments, the positioning means (M) may be arranged either for horizontal positioning, or for vertical positioning, or for both. The means (M) for positioning the sensors (V;) and / or the optics (OP;) of each optical-sensor pair (COC) are arranged so that the positions of the optical centers (C) and the captures (ZC;) are in proportions defined by parameters (25i) for defining a capture configuration (25), as mentioned above. This capture configuration (25) depends on so-called restitution parameters (21) and on at least one so-called configuration parameter (23). The parameters (21) of restitution, define or allow to deduce at least the dimensions of a chosen useful area of the rendering device and preferred viewing positions chosen for the playback device. At least one configuration parameter (23) makes it possible to define a desired deformation for the relief effect and / or a capture geometry, as detailed below. The capture by the device provides a projection w of the scene on the nxm capture zones (ZCi) of the nxm sensors (V;), through nxm pyramidal optical pickup beams supported on a rectangular base (BC) common to the nxm beams optical and arranged in the scene to capture. The nxm beams each pass through one of the nxm centers (Ci) of the optics (OPi) aligned, in batches, on one or more straight lines, called straight lines (LCi2) of alignment of the centers, parallel (s) to one of the main directions of this common base (BC). The capture zones (ZC) correspond to the intersection of these optical beams with at least one plane parallel to this common base (BC). The sighting axes (AVi) or main axes of the nxm optical beams, passing through their center (Ci) of their optics (Oi), all converge towards the center (PS) of the common base (BC). This last condition of convergence of the axes of sight (AV;) is necessary for the coherence of the images captured by the various couples (COCi) optical-sensor to guarantee a perception in relief. This projection (capture pyramids) thus prescribes at least a portion of the configuration parameters (23). In some embodiments where the positioning means (M) are automated, the device allows the operator, through the interface (13), to select (or enter) the parameters defining the type of rendering device and / or defining the deformation which it chooses to have on the relief rendering of the scene and / or defining at least one of the relative parameters to the capture geometry (as detailed below).

It will be understood from the following description of the capture and playback geometries that the configuration (25) is determined by the linking of the reproduction parameters and configuration parameters of the capture. This linking is achieved by the use of definite relations which, as explained hereafter, can be defined by equations, for example expressed in the form of the equations detailed below or according to various equivalents (as explained below). ). In the case where the device is automated and where the configuration module (22) generates the configuration (25) as a function of parameters chosen by the operator, the configuration module (22) may for example use at least one algorithm for the linking of the parameters, at least equivalent to the equations detailed here. In some embodiments, these two types of data (rendering parameters and configuration parameter (s)) come from the storage means (12) accessible by the configuration module (22). In other embodiments, the user interface (13) makes it possible to enter these two types of data or to select these two types of data. Some embodiments therefore correspond to combinations of these embodiments, the invention making it possible, for example, to choose at least one rendering device (which prescribes all or part of the parameters 21) and to choose how one wishes the capture either performed (either by choosing deformation parameters, or by choosing at least one parameter relating to the capture geometry, as detailed below), so that the configuration module (22) generates the configuration (25). ) to obtain the images corresponding to these choices. In the embodiments where the device is preconfigured for at least one rendering device, it offers no choice on the deformations or the capture geometry. In these embodiments, the configuration parameter (23) may in fact correspond to an implicit parameter, since the relief rendering must not present any deformation or present a preconfigured deformation, which prescribes a certain number of parameters of capture geometry as detailed below.

The configuration generated or used by the system then simply relates the data representative of the parameters (21) of restitution with configuration parameters prescribed by a specific relationship (equation) taking into account this implicit parameter.

The configurations generated or used (and proposed) by the configuration module (22) are determined by positioning the optical centers (C;) and the capture areas (ZC;) of the capture device. This positioning can be done with reference to a reference specific to the capturing device. This clean mark can be arbitrary (for example in the center of the device, or even outside the device), but placing the device in front of the scene and taking into account that the capture configuration must be such that the axes (AV;) converge on a convergence point (PS), the positions of the optical centers (Ci) and the capture zones (ZC;) are in fact implicitly defined with respect to the convergence point (PS) since this condition is necessary to the coherence of the captured images, to guarantee the perception of a relief. To define the configuration, it is possible, for example, to use a global capture frame, for example centered on this convergence point (PS). The device according to the invention is placed in front of a scene to be picked up, at a determined distance from it, for example at a focusing distance from the device. This focusing distance is, as detailed below, prescribed, on the one hand, by the (or) distance (s) focal (s) optics (OP;) used in the device and, secondly, by the parameters (21) of restitution. The operator must therefore ensure that he places his device 25 correctly with respect to the scene that he wants to capture, in particular so that the point (PS) of convergence is correctly placed relative to the part of the scene that he wants to capture. The configuration (25) prescribes that all the viewing axes (AV;) of the optical-sensor couples (COC;) converge towards a point (PS) situated at the center of the common base (BC) at the pyramids of the pickups. various couples. The positioning of the device makes it possible in particular to position the point of convergence (PS) in the scene and to orient in the scene, around this point, the common base (BC).

Indeed, the capture device comprises optical-sensor couples (COC;) distributed horizontally and vertically, according to a determined configuration. The positioning of the capturing device thus defines a horizontal direction and a vertical direction, as well as a depth direction for capturing. These three directions thus prescribe the orientation of the common base (BC) and may, for example, prescribe implicitly the orientation of a global reference mark (27) of capture, which may for example be centered on the point (PS) of convergence and whose conformation may be defined by a magnification factor k). The positioning of the pickup areas (ZC) and the optical centers (C) can be determined with respect to a reference specific to the pickup device or to a global pickup mark, which can be arbitrary or centered on the pickup. convergence point (PS). Thus, the positioning of the device according to the invention in front of the scene therefore makes it possible to define implicitly the positioning, the orientation, or even the conformation, of at least one global reference mark (27) for capturing in the scene. This global pickup mark (27) can be defined, for example, by the positioning of the device by means of a reference point of the marker, centered on the convergence point (PS), the three directions X1p, Y, ps, Z, p (Figure 2) of the reference, prescribed by the orientation of the device and corresponding to the 3 characteristic directions of the common base (BC): main directions for X and Y, and normal direction for Z. The module (22) of The configuration uses data representative of restitution parameters (21, Fig. 1). These parameters (21) of restitution concern firstly the dimensions of the useful area of the rendering device. This useful area may be expressed in terms of width L (FIG. 5) and height H (FIG. 5) for example, but also in terms of ratio (for example, of the 16/9 or 4/3 type) and dimension of the diagonal (for example 3o in inches: 32 ") or in dimension of an image point (pitchs, for example in pm or density in dpi) and in resolution used (number of pixels per line and column of the useful zone). It will therefore be understood that the expression given here to the parameters used is given only by way of example It will be understood from reading the present description that this notion is true for most of the parameters detailed here.

These restitution parameters (21) concern, on the other hand, the privileged observation positions (Oi, Ogi, FIG. 5) for the chosen restitution device (for example nxm privileged positions). These positions can be defined by the optimal positioning of the viewer (for example at an optimal viewing distance), one or more optimal dipping (or zenith) observation, as detailed below. An example of expression of these parameters is given in Cartesian definition by: the distance di from each observation position with respect to the plane of the rendering device, the lateral offset (according to the lines of the device) or from each position of observation with respect to the center (Ce) of the device, - the vertical offset (according to the columns of the device) pi of each observation position relative to the center (Ce) of the device. However, it is obvious that one can also use, for each position, a spherical definition by the distance to the center (Ce) and azimuth and zenith angles, or even use cylindrical coordinates. On the other hand, in the examples detailed here, and as illustrated in FIG. 5, these positions being aligned in batches on one or more lines (LO12) of alignment of the observation positions, parallel to the lines of the device, a reduced parameterization can also be used by keeping only the non-redundant parameters, such as the distance di2, the vertical shift pie of each straight line (LO12) of alignment of the positions involved, the lateral offset oi of each position on its alignment line. This offset can even be reduced to column-by-column offsets if the matrix distribution places the same indexing positions at the same lateral offset.

Each privileged position (O;) is supposed to receive from the device image No. i with coherence (without too much mixing with the other images), as detailed below with reference to the restitution geometry.

The configuration (25) defines the positioning, with respect to the convergence point (PS), of the nxm optical centers (C;) and the dimensions and positioning, with respect to the point (PS) of convergence, of the n × m capture areas (ZC ;) associated with them. These data therefore make it possible to define each zone (ZC) of capture n ° i in the scene by means of information (25i, FIG. 1) which comprises or makes it possible to determine the capture configuration (25, FIG. 2) by: - The coordinates of the optical center (C;) with respect to the convergence point (PS). The dimensions (of the useful area) of the capture zones (ZC), for example expressed in width lz; and in height hz ;, the effective positioning of the capture zone (ZC;) vis-à-vis the optical center (C;) (or center of projection). In the case where a pickup mark (27) centered on the convergence point (PS) is used to define the pickup configuration (25), the configuration setting parameters (25i) allow express the effective positioning of the optical center (C;) with respect to the point of convergence (PS), by C; ips = pXi.X, ps-pY; .Yjps-pZ; .Zips, in Cartesian coordinates, with: pZ ; : distance (Figure 2) separating this optical center (C;) from the common base (BC) (according to -Z1ips), pX; : offset (along X, 1ps) of this optical center (Ci) with respect to the point of convergence (PS), center of the common base (BC), pY; : (-Yjips) offset of this optical center (C;) with respect to the convergence point (PS), center of the common base (BC), It is recalled here that the positioning of the device prescribes the orientation of the reference ( 27) and that it prescribes the orientation of the capture zones (ZC;) with respect to this marker. For example the 2 main vectors X, 1p, oriented along the lines of the image to be captured and Y;, ps, oriented according to the columns of the image to be captured for each of the capture zones have (in the expression chosen here ) the same orientation, respectively, as the main directions X1ps and X, p of the marker (27). This effective positioning thanks to the global reference (27) can also be expressed in angular coordinates: for example by the azimuth and zenith of the PS-C axis; (Figure 2). The effective positioning of the capture zone (ZC;) can be expressed in Cartesian coordinates (FIG. 2) by: - dZi: distance separating the capture zone n ° from its optical center 10 (C 1) (orthogonal to the plane of the capture zone, that is to say along the optical axis A0, or according to Z; jps), - dX; : shift (according to X;, ps) of center I; the capture area (Ci) with respect to the optical center (C;) - dY; : shift (along Y, ps) of center I; of the capture area (C;) with respect to the optical center (C;). This actual positioning can also be expressed in angular coordinates: for example by the azimuth and the zenith of the line of sight (AV ;, Figure 2). Similarly, the Cartesian dimensions lz; and hz; the capture zone (ZC;) can be replaced, once the distance dZi is determined, by the horizontal and vertical angular apertures (even the left and right azimuths and the low and high zeniths). It should be understood that the invention in fact simply requires positioning the optical centers and pick-up areas relative to one another and that any mark could be used, as long as it is ensured that the configuration allows a capture of coherent images from one couple to another. Thus, the parameters (25i) for defining the configuration are defined here with respect to the convergence point (PS) because this definition is particularly practical, especially in the case where the device comprises several parallel rows each comprising several optical-sensor couples. , so as to be able to characterize the elevation of each row with respect to the point of convergence (PS). However, it is possible to define the positions of the optical centers and the capture areas with respect to any landmark and it is then necessary to ensure the convergence of the axes of sight to ensure relief rendering during the restitution. Thus, the invention makes it possible to determine, from the reproduction parameters (21) and the configuration parameters (23), the representative data of the configuration (25) by determining at least a part of the information (25i) above. , with reference to the point (PS) of convergence, io to a global reference (27) of implicit capture or to a specific reference to the capturing device. In some embodiments, these parameters (25i) for defining the configuration may be expressed in the form of values that can be directly used on the capture device, for example values expressed in revolutions of a stepper motor are or any information useful for physically positioning the optics (OP;) and the sensors (V;) according to the desired values for the optical centers (Ci) and the capture areas (ZC;). Thus, the parameters (25i) will be directly usable to control the device and obtain the desired capture configuration (25). Thus, the configuration module 20 may generate parameters (25i) for defining the configuration in the form of signals representative of values that can be used directly for controlling the means (M) for positioning the optics and / or sensors of the device according to FIG. 'invention. The rendering and capturing (shooting) geometries are now detailed with reference to FIGS. 3, 4A and 4B and FIG. 5. FIGS. 3, 4A and 4B are shown, from various angles of view, the geometry of FIG. capture in the embodiments where all the capture areas (ZC;) have the same dimensions and are placed at the same distance f (measured parallel to z) their associated optical centers (C;) 3o. Their intrinsic characteristics can be represented by various sets of parameters that are globally totally equivalent although distinct in their internal structure (description of pyramids by distances and / or angles, characterization of points or vectors in Cartesian or cylindrical or spherical coordinates,. ..). Thus, as mentioned above, the parameter sets used for the forthcoming geometric descriptions should be considered as non-limiting examples of how to characterize these geometries and the equations detailed here are only examples of the relationships used in the invention. to relate the parameters. Restitution Geometry FIG. 5 represents an example of a description of the geometry of the rendering device for which the images will be generated and exposes, by way of example, all or part of a set of parameters making it possible to characterize this geometry completely. (for the purposes of this invention). The mixed device nxm images extended for example over its entire useful area of dimensions L (width, Figure 5) and H (height, Figure 5). Each of these images # i = (il, i2) E {1 ... n} x {1 ... m} is supposed to be visible correctly (without too much mixing with the others) at least since the chosen preferential position ( Oi, FIG. 5) positioned on one of the lines 20 (LO12) of alignment of the selected observation positions, parallel to the lines of the device and are each dedicated to an observer with predefined characteristics (binocular deviation and gaze height) which can then move to change the angle of view of the restored scene. This straight line (LOi2) of alignment, and therefore the observation position (Oi), is situated at a distance di2 from the useful area of the device which can be defined according to the chosen restitution device, so as to ensure that a user binocular bit deviation (Figure 5), with a line of eyes parallel to the lines of the device having his right eye in (O ;, Figure 5) which would perceive the image No. i, would have his left eye in (Ogi, Figure 5) with gi = i- (qi2,0) which would thus perceive the image n ° gi. Thus, for each line (LOi2), two attributes or interdependent parameters are defined: bit the binocular distance chosen for this position (often the bits will all be identical to the average human binocular distance 65 mm, but it is conceivable to choose different distances according to the expected audience: children, ...) and qi2 the difference of image numbers composing the visible coherent stereoscopic pairs with binocular deviation bit from the preferential positions of the straight line (LOi2) of alignment of the positions of observation. According to a characteristic of multiscopic devices, it is possible, from a position (Oi), to continue to perceive relief by shifting vertically (parallel to the columns of the useful area of the device) more or less depending on whether this device offers or not a vertical distribution of the images (m> 1 or m = 1). Thus, spectators of various sizes can use the device at the cost of a possible shear deformation of the relief they perceive (see below). The viewing conditions are thus defined for a given user size common to a whole chain of observation positions, or rather for a given embedding p12 which represents the vertical difference (parallel to the columns of the device) of positioning of the eyes. observers on this chain in relation to the center (Ce) of the useful zone. When the observer (and therefore the actual embedding) is not a priori known, one is satisfied with a mean plunge pi2m 20 (corresponding to an observer of average size to be defined). The analysis of the characteristics of the restitution geometry is based on a reference (Ce, x, y, z- x "y) defined with respect to the restitution device, for example at its center (Ce), such that, as FIG. 5 shows that: x is parallel to the lines of the rendering device and oriented to their right in FIG. 5, there being parallel to the columns of the rendering device and facing downwards in FIG. 5, according to a feature of the system. generation, the data representative of the restitution parameters (21), defining in particular the characteristics of the multiscopic reproduction device, for example stored in the storage means (12) comprising, for example, a specific storage means for these data, comprise and / or allow to deduce at least, and if necessary, the aforementioned restitution parameters L, H, di2, pi2 (or pi2m), oi which represent: • dimensions, width L and high eur H, of the chosen useful area rectangle of the device (display, projection or printing of the mixed images), • the precise location of the lines (LO12) of alignment of the positions in the restitution frame (Ce, x, y, z) based on their di2 distance to the device and their dipping or vertical shift pi2 with respect to Ce. lo • the precise location of the observation positions chosen or imposed on their right (LOi2) (for example offset or lateral ù according to the lines of the device ù relative to the center of the device) • stereoscopic settings of each chain of positions (LOi2) : index difference qi2 of the images of the chain provided for the left and right eyes and binocular deviation bit provided for this stereoscopic relationship, Note that the observation positions are often regularly spaced on the lines (LOi2). In this case, the lateral offsets oi of the observation positions on one of these lines are collectively defined by only one of these data and the characteristics associated with this line: oi = o (l, i2) + bi2 (i1-1) / Qi2. Thus, it is possible to have reduced sets of parameters which make it possible, in these particular configurations, to calculate the missing parameters. In the automated embodiments, the user interface (13) (or human / machine interface, such as at least one screen 25 and input and / or interaction means) allows, in cooperation with the module (22). ) configuration, interactive management (input, consultation, selection, editing, saving) of these parameters (21) of restitution stored, among others. An interface control module may be provided in certain embodiments for managing data exchanges between the interface (13) and the configuration module (22). It will be noted that for the parameters relating to rendering devices, this data may be updated in the system according to the evolution of the known devices. According to another variant of the automated embodiments, a recognition module may allow the automatic recognition of a rendering device connected to the capture device according to the invention, then the selection in a list of known devices of all or part of its rendering parameters for the configuration module (22) to use the parameters of the detected and recognized device, for example to (re) initialize their contents and present them interactively to the operator via the interface (13) man / machine.

Capture Geometry FIG. 3 shows a perspective representation of the image capture geometry making it possible to define the configuration of the capture zone No. 1 (for example the zone ZC, represented in FIG. for example, all or part of a set of parameters making it possible to completely characterize this capture geometry (for the purposes of this invention). Figures 4A and 4B show representations, respectively, front and top, of this capture geometry. The definition of the capture geometry may, for example, be based on the global capture frame (27, Fig. 2), for example, positioned at the desired convergence point (PS) and oriented such that the first two vectors base are parallel to the main directions of the common base (BC) centered in (PS) and therefore to the main directions of the catchment areas (ZC). Illustratively and in no way limiting, the first basic vector is here chosen parallel to the rows of the capture areas and the second parallel to the columns of these areas. In the automated embodiments, the storage means (12) may provide data representative of parameters relating to this marker (27). These data may, for example, come from a specific storage means or the same storage means as the other parameters and / or come from the user interface (13) (parameters entered, or selected from among a stored plurality, by the operator). It will be noted that the definition of the focusing distance of the device, prescribed by the reproduction parameters and the focal length (s) (s) of the optics (OPi) of the device and the definition of the point (PS) of convergence. relative to a reference specific to the pickup device according to the invention is equivalent to the use of this mark (27) capture. It will be understood that various variants can therefore be envisaged for the data defining the marker (s) for the positioning of the optical-sensor couples (COC1) in the storage means. The reference (s) allows (s) to define the position and orientation of all the projection pyramids representative of the capture zones, specifying in particular the observation direction Z and the straight line (LCi2). alignment of optical centers. More specifically, the nxm capture pyramids representative of at least one embodiment of the camera according to the invention, which respects the principles previously stated to solve the problem P1, are specified by: optical axes ( AO1, Fig. 2) Z-directional parallels, • optical centers (Ci), aligned on one or more straight lines (LCi2) of alignment of the optical centers, parallel to the lines of the common base and thus of direction X • rectangular capture zones (ZCi): orthogonal to z, thus parallel to each other, to the common base (BC) and to the alignment lines (LCi2) of the optical centers; possibly coplanar; 25 - placed at a distance fi from the optical center (Cl or at a distance common to all the areas associated with the optical centers aligned on (LCi2), or at a distance f common to all the zones, depending on the (or the focal distance (s) of the optics (OP1) of the device according to the invention, of a specified physical size, for example li and hi, or of identical physical size in batches (1i2, hie) or globally ( I, h) according to the choices made above for the distances between the capture zone and the optical center, decentered with respect to their respective optical axis (AOi, Fig. 2) at points Ti so that the lines (I; C 2, which define the viewing axes (AV;) all pass through the fixed convergence point PS, it should be noted that the capture zones (ZC) are parallel to the common base (BC). thus have a capture axis perpendicular to the common base (BC) but the projection pyramids have target axes (AV; ) (or main axes) converge to the PS point. Control of the capture configuration By positioning the device according to the invention in front of the scene to be captured, the operator makes a choice in terms of the position (s) and orientation (s) 15 of observation of the scene (point of convergence ( PS) and common base (BC)). To represent the operator's capturing choices and translate them into an operational configuration (25), in the automated embodiments where the configuration module (22) generates the configuration, the configuration module (22) also uses data (23) representative 20 of at least one configuration parameter. Depending on the nature of the configuration parameters used, this module (22) is declined in several ways that leave more or less freedom to the operator, as detailed below. Note that the modalities described below refer to the embodiments where the device includes a configuration module generating the configuration but it should be obvious that some of these modalities actually allow to describe capture configurations which are usable in the various embodiments of the device described above. Constrained modalities In some embodiments, said perfect relief effect, the parameter (23) configuration is in fact a parameter (23d) defining a relief rendered without any deformation relative to the relief of the captured scene. In some embodiments, this parameter is implicit and will be used following the selection of a user's choice on the interface (13) that wishes to render the scene without any deformation. In other embodiments, this parameter can even be omitted because the device is said preconfigured to capture in a configuration (25) for a perfect relief determined from the parameters (21) restitution. In the automated embodiments where the configuration module (22) generates the configuration, the latter uses here in fact the parameters (21) of restitution, without requiring parameter (23) indicating the perfect relief since it is the only modality considered. In this case of the perfect relief, the parameters (25i) can be calculated as follows (with the sets of parameters chosen as an example): fi imposed by the focal lengths of the optics (OPi) of the device according to the invention: Izi = L fi / die hzi = H fi / die dXi = oi fi / die dYi = pie fi / die dZi = fi pXi = oi PYi = Pie pZi = die

In addition, as mentioned above, the distances f 1 can be chosen equal in batches or globally. The set of parameters (25i) is then calculated from the common value (s) f or f of the distances f 1, and shows that the capture zones have the same dimensions in batches or globally: imposed by the focal lengths of the optics ( OPi) of the device according to the invention: ## EQU1 ## Focal length of the optics (OPi) of the device according to the invention: lzi = L f / die hzi = H f / die dXi = oi f / die dYi = Pi2 f / die dZi = f pXi = oi PYi = Pi2 pZi = die In this case of the perfect relief with capture zones of identical dimensions (ratio fi / die constant), the skilled person will understand that with the data representative of the parameters (21) of restitution (L, H, die, Pie and oi ) and the positioning of the device prescribing the position of the convergence point ~ o (PS) (or the data representative of the capture mark (27)), it is sufficient to set a single parameter (23) of conf. iguration (common distance f, one of the distances fi or fi2, one of the common size values of the capture zones lzi, hzi, one of the offsets xi or yi). The other parameters can indeed be easily deduced from the above equations. The configuration (25), in the embodiments dedicated to the perfect relief, can therefore use, as sole parameter (23) of configuration, the distance f or several distances fi or fi2, which depends (ent) on the (or) distance (s) focal (s) optical (OPi) of the device according to the invention. The configuration (25) is therefore well determined from the parameters (21) of restitution, and data representative of at least one configuration parameter (23) defining a desired deformation for the relief effect and / or a geometry of capture (and possibly of data defining at least one mark, such as data defining the pickup mark (27)), but the only configuration parameter (23) actually used may actually be only one parameter ( 23d) implicitly defining the absence of desired deformation. In the case of a system providing only this perfect relief modality, it is therefore clear that the configuration parameters as such can be omitted and that only an implicit parameter 30 will require the use of relations to determine the parameters of the configuration. defining (25i) the pattern (25) from the rendering parameters (21), equivalent to the relationships defined by the equations above. Some embodiments of the invention therefore also relate to a capture device with perfect relief (without deformation), either preconfigured for at least one rendering device, or at least partially configurable by the operator who can choose the targeted rendering device. These embodiments therefore relate to a device for simultaneous capture of a plurality of nxm shots intended for a relief rendition without deformation on at least one multiscopic ro restitution device, characterized in that: the capture is carried out at the using a plurality of optically optical nxm (OP) nxm couples (COC;) each having an optical axis (AO;) and an optical center (C;), mounted on at least one support (S) , whose optical axes (AO;) are parallel to each other and each associated with an optoelectronic sensor (V;), mounted on the support (S) and in which is defined a capture zone (ZC;) in which the projection of the scene is provided, - the support (S) comprises means (M) for positioning the optics (OP;) in at least one plane (PCi) perpendicular to the optical axes (AO;) and / or means (M ) positioning the sensors (V;) in at least one plane (PV;) parallel to the plane (PC; ) optical centers (Ci), - the means (M) for positioning the sensors (V;) and / or the optics (OP;) of each optical-sensor couple (COC;) are arranged so that the positioning of the centers (C;) optical and capture areas (ZC;) are in proportions defined by parameters (25i) for defining a capture configuration (25) that depend on parameters (21) of restitution, defining or allowing to deduce at least the dimensions of a chosen useful area 30 of the rendering device and the preferred observation positions chosen for the reproduction device, the capture providing a projection of the scene on the nxm capture areas (ZC;) of the nxm sensors (V;), through nxm pyramidal optical pickup beams supported on a rectangular base (BC) common to the nxm optical beams and arranged in the scene to be captured, the nxm beams each passing through one of the nxm centers (Ci; ) optics (OP; aligned, in batches, on one or more line (s), said straight lines (LCi2) of alignment of the centers, parallel (s) to one of the main directions of this common base (BC), the capture zones (ZC ;) corresponding to the intersection of these optical beams with at least one plane parallel to this common base (BC), the axes of sight (AV;) or main axes of the nxm optical beams passing through their center (Ci) of their optics (OP;), all converging towards the center (PS) of the common base (BC). According to the focal length (s) (s) of the optics (OP) of the device 15 according to the invention, fixing the distance (s) between the capture zones and their optical center, and with the sets of parameters chosen as an example, this device intended for a restitution with a perfect relief imposes a configuration (25) established from the restitution parameters (21), according to the equations detailed above in the constraints modality. The configuration (25) may therefore for example use a parameter (23) of configuration (for example implicit) defining a relief effect without deformation, such as the parameter (23d) implicitly mentioned above or simply using the corresponding relations, or equivalent, to the equations detailed above in the constraints modality, without actually requiring such a parameter (especially if the perfect relief is the only functionality envisaged). Note that this modality without deformation corresponds to a relief relief without deformation and scale 1. It is possible to take into account a restitution without deformation with a global magnification factor different from 1 that can be chosen by the operator .

This possibility is provided by the controlled relief modalities described below. Controlled relief modalities In some embodiments, the operator is more free of its settings and the parameter (s) (23) configuration (or data representative of this parameter, in the case of the automated device comprising a module configuration parameter generating the configuration from selected parameters) comprises at least one set of parameters among the following sets of parameters: set (23a) of internal capture parameters defining the capture geometry directly by at least the positions , with respect to a mark specific to the pickup device according to the invention, optical centers (Ci) and the positions of the pickup areas (ZC;) on which the scene will be projected to form the nxm images, • together (23b) of external capture parameters defining the capture geometry from the convergence point (PS) by at least: the dimensions of the common base (BC ) centered on the convergence point (PS); the precise positioning of the line or lines (LC12) of alignment of the centers relative to the common base; the precise positioning of the optical centers (C;) on these lines (LC; 2) of alignment of the centers; and finally the precise position of the capture planes (PV;) parallel to the common base which define the capture zones (ZC) as their intersection with the projection beams. • set (23c) of deformation parameters defining the possible deformations for the relief rendering of the scene. Thus, in the embodiments where the device according to the invention is automated and comprises a configuration module generating the configuration 30 from selected parameters, the operator can select (or enter) via the interface, at least one parameter at least one of these sets of parameters. In the other embodiments, the configuration (25) used may have been generated in the same way. Figure 3 shows the capture geometry and shows, by way of example, two sets of parameters, one of which is called internal and the other external. Various embodiments of the present invention, by virtue of these various parameter sets (23a, 23b, 23c), allow the operator, in various embodiments of the system configuration module (22), to provide the features and modalities described herein. here, to choose Io values for the internal capture parameters (23a) and / or values for the external capture parameters (23b) and / or values for the deformation parameters (23c). It will be understood from the following analysis that some of the parameters of these sets make it possible to deduce other parameters of the same set or of another set. The invention therefore allows in fact various combinations of the embodiments described below, unless these embodiments are incompatible or that it is expressly mentioned.

Thanks to the analyzes of the restitution and capture geometries made above, it is possible to connect the coordinates, for example (X, Y, Z) in the reference (27) or with respect to the convergence point (PS), points U (in 3D) of the scene captured by the optical-sensor couples (COC;) previously defined with the coordinates (x;, y;, z;) in the coordinate system (Ce, x, y, z) of their counterparts received by an observer of the rendering device, placed in a preferential position (right eye in O;) previously defined when the device operates according to its prescriptions images generated by use of the configuration according to the invention, for example as described below. This relation between the 3D coordinates of the points of the captured scene and those of their images rendered by the device for this position is characterized, for example, by the homogeneous coordinate expression: Pi Yi PiPi bi 1 0 0 k; -1) / d; c; which shows, in addition to a, calculation residue without any other importance, the deformation parameters (23c) which characterize it collectively. Homogeneous matrices thus make it possible to define the transformations between the initial space of the scene and the restitution space for each privileged position of observation n ° i. Deformation parameters (23c) can be identified lo individually in multiple ways, including, for example, as: • one (or more) factor (s) k; overall magnification and particularly in depth, • one (or more) parameter (s); control of the potential nonlinear deformation (which transforms a cube into a truncated pyramid), • a (or) rate (s) of relative magnification of the width relative to the desired depth or horizontal anamorphosis factor / depth, one (or) rate p; relative magnification of the height with respect to the desired width or vertical / horizontal anamorphosis factor, • a rate (s) of horizontal shear of the perceived relief, • a (or) rate (s); vertical shearing of the relief perceived by a plunging observer in accordance with that expected. The parameters of restitution (21), capture (internal 23a or external 23b) and deformation (23c) above are linked by a set of equations which results from the comparison between the coordinates (X, Y, Z). points (U) of the scene and those (xi, y;, zi) of their counterparts perceived by an observer of the rendering device. The configuration used in the device according to the present invention is based on this comparison. a Yi zi 1 xi k; 0 0 0 XYZ 1 These equations resulting from this comparison allow several modalities or variants of the configuration module (22) which can for example and if necessary or useful: • calculate the external parameters (23b) and / or (23a) internal capture depending on the parameters (21) of restitution and the desired parameters (23c) of deformation, which allows the system to ensure that the desired deformation will actually be obtained at the relief of the scene. The equations then used are delivered hereinafter in the modality concerned control deformation. calculating the deformation parameters (23c) induced by the technical choices (external (23b) and / or (23a) capture and (23a) internal capture parameters), which allows the system to precisely quantify the perceptible deformations and present them textually or schematically to the operator to guide him in his choices. The equations then used are delivered hereinafter in the relevant modes internal adjustment and external adjustment.

In addition to the global magnification factor k; which is not strictly speaking of a nature to deform the scene, the transformation of the relief 20 thus comprises four independent possibilities of deformation: 1. a global non-linearity which results in a deformation of the volume restored as a truncated pyramid when e; ≠ 1, 2. a horizontal slip or shear of the volume returned as a function of depth when y; ≠ 0, 25 3. a vertical slip or shear of the volume restored as a function of depth when b; ≠ 0 and / or when the real embedding of the observer is efferent of the optimal embedding, 4. anamorphosis producing unequal dilations of the 3 axes when p; ≠ 1 and / or p ≠ 1. 3o Thus to allow a return of controlled deformation images as without deformation, it is necessary, in certain modalities, that the capture of the images, the configuration of the restitution device (zone used) and the conditions of use (privileged positions) are defined jointly according to the desired deformation parameters. To allow a faithful reproduction of the relief (at close magnification), it is particularly appropriate, once the restitution conditions chosen, to configure the shooting (capture geometry) so as to resorb these 4 potential deformations. This is obtained by defining the configuration (25) by ensuring, directly or indirectly, according to the chosen modalities, that the deformation parameters satisfy ci = l, y; = 0, p = 1, p; = 1 and finally b; = 0. This last condition b = 0 is more delicate because it depends on the size of the observer who inevitably acts on its actual embedding vis-à-vis the device. It can then be ensured only for observers having the embedding defined in the parameters (21) of restitution for this observation position. On the other hand, to obtain a controlled deformation of the relief rendered, it is necessary to configure the shooting (capture geometry) so as to obtain the desired parameterization of each of the 4 potential deformations.

This is obtained by the embodiments of the configuration module (22) which allow the direct or indirect adjustment, according to the modalities chosen, of the deformation parameters ci (and hence k; (E; -1) / d;), y p, p; and finally b. Here again, the vertical slip chosen b; can only be assured for observers having the embedding defined in the parameters (21) of restitution for this observation position.

Internal Adjustment Mode In some embodiments, the configuration module (22) uses data representative of at least one configuration parameter (23) that includes data representative of the following acquisition geometry internal parameters (23a): at least one parameter defining the positions of the optical centers (C;) vis-à-vis a reference specific to the capture device according to the invention, - at least one parameter defining the orientation of the line of sight (AV; ) of each capture zone (ZC;), - at least one parameter defining the geometry of the effective projection pyramid of each capture zone (ZC;). This reference specific to the capture device according to the invention may be arbitrary, but must allow the precise identification of the positions and relative orientations of the couples (COC;) optical-sensors. It could thus be chosen internal to the device (defined out of any reference to the scene): positioned at a reference point of the device (its center or the centroid of the optical centers for example) with its 1st and 2nd axes respectively oriented according to the rows and columns of capture areas. It can just as easily be defined external to the device (relative to a reference point and a capture orientation). In this case, we speak of reference point of the capture since the convergence is not ensured intrinsically by the parameters adjustable in this modality, and that this point can not therefore always be described as a point of convergence. It is then possible, for example, to define the pickup mark which is centered on any reference point making it possible to define the positions of the optical-sensor pairs (COC;) with the parameters presented hereinafter. This marker makes it possible to precisely identify the direction of capture Z orthogonal to the capture zones and the common orientation X perpendicular to z of the lines of all these capture zones. It may, for example, be centered on the chosen reference point, with its third and the transverse axes respectively oriented along Z and X defined above with respect to the capture orientation imposed by the positioning of the device in the scene.

The optical centers (Ci) are, for example, chosen aligned in batches on one or more straight lines (LCi2) of alignment parallel to the lines of the capture zones, or of common direction (X). Thus, each point Ci of index i = (il, i2) is positioned on the alignment line LCi2 whose index is identical to its second index i2 and each of these straight lines LCi2 carries all the points Ci i = (il, i2), second index identical to theirs. This is expressed by (C (i1, i2)) E (LCi2) V (II, i2) E {1 ... n} x {1 ... m}. The positioning of the points Ci i = (il, i2) is thus prescribed by that of these lines (LCi2) of alignment which are, for example, defined by their distance Die along Z at the reference point and their dipping Pie (offset according to Y, the vector product of Z and X, vis-à-vis the reference point). In an alternative and equivalent way, it can be expressed in polar in the plane (YZ) passing by the point of reference by a zenith angle and the Euclidean distance at this point or, by the zenith and one of the 2 previous distances Di2 or Pie. These positions of each optical center (Ci) on the straight line (LCi2) which carries it, can for example be expressed by their abscissa c; on this line (according to X) with an origin for example in the plane (YZ) passing through the reference point, or in polar in the plane (XZ) by the azimuth angles (angles of the plane XY or of the plane YZ with each of the 20 planes parallel thereto passing through the reference point and each optical center), or alternatively, as detailed below, for regularly spaced optics, at least, per line (LCi2), an abscissa of a center optical and constant bit / q i2 gap between these optical centers. This orientation of the axis of view (AVi) (or main axis) of each projection pyramid may, for example, be expressed in azimuth and zenith angles of view or by relative relative distances shown in FIGS. , 4A and 4B: - the shift ai (along X), at the distance f (or fie or f;), from the center (Ii) of the capture zone (ZC;) with respect to the optical axis (AOi) of the optical center (Ci) associated with it, o - the offset ei (along Y), at the distance f, fie or fi, of the centers (Ii) of the capture zones (ZCi) with respect to the optical axis (AOi) (or line (LCi2) optical centers (Ci) .This geometry of the effective projection pyramid of each capture zone (ZCi) may for example be expressed by at least one parameter defining the openings of the pyramid effective projection of each capture zone, for example, these openings can be given by the dimensional characteristics (dime nsions (1, h), (li2, hi2) or (1i, hi) at a distance f, fie or fi) or angular (angles of horizontal or azimuthal io and vertical or zenithal openings) or other expressions to the range of the skilled person. Recall that the dimensional data of the pyramids ai, ei, fi, li, hi, are relative since any multiplication of each of them by an identical factor leads to a similar projection pyramid which will give exactly the same image. It is however customary to explain them all for more comfort, even if you have to use an implicit rule that sets one of these values. In these internal adjustment modes, the information (25i) for defining the configuration (25) can be calculated very simply (with the parameter sets chosen as an example above) since the internal parameters (23a) are very directly involved in the geometric description of the catchment areas (ZCi). Thus, according to the distance choices imposed by the focal distance (s) of the optics (OPi) of the device, these parameters (25i) are obtained for example according to one of the 25 sets of equations. following: ^ fi imposed by the focal lengths of the optics (OPi) of each optical-sensor couple (COCi), ViE {1 ... n} x {1 ... m}; 1i = 1i hzi = hi dXi = ai dYi = ei dZi = fi 30 pXi = ci pYi = Pie pZi = Die ^ fi2 imposed by the focal lengths of the optics (OP;) of each row of optical couples-sensor (COC;) , Vi2E {1 ... n} Iz; = 1; 2 hz; = h; 2 dX; = a; dY; = e; dZ; = f; 2 pX; = q pYi = Pi2 PZi = Di2

^ f imposed by the focal length of the optics (OP;) of the device. Iz; = I hz; = h dX; = a; dY; = e; dZ; = f pXi = q PYi = Pi2 PZi = Di2 In some embodiments, when the optical centers (C;) are desired regularly spaced on their alignment right (LCi2) (in particular but not only when the rendering device 15 multiscopic offers privileged observation positions regularly spaced and that the operator wants a relief without deformation or linear deformation), the set of internal parameters (23a) used by the module (22) configuration can be reduced by the replacement , globally or in batches, abscissae c; by the information representative of an abscissa 20 (unique for example c (l, o) or by a straight line, for example c (1, i21) and the inter-optical distance separating the 2 optical centers assumed to capture the left and right views; for the observer expected in any preferred position or on each string of the rendering device, this inter-optical gap is then defined globally B or by the straight line B 2 These reduced parameters 25 easily replace the previous ones for the generation configuration parameters (25i) by the substitutions below in the above equations: cc (; i,; 2) = c (l, o) + (il-1) B / q for the overall reduction ^ c ( 1, i2) = c (1, i2) + (i1-1) B i2 / q i2 for the batch reduction According to various embodiments, as already mentioned, the device also includes an interface (13) This interface can be arranged here to allow interactive management (consultation, editing, egarde) the internal capture parameters stored in (23a), then the configuration module (22) calculates and saves, in one or more means (12) of storage, data (25i) characteristic of each pair (COC;) optical-sensor, comprising enough parameters to correctly position the optical centers (Ci), (optional system) and the capture areas (ZC;) (dimensional or angular approach). Finally, it should be noted that, in this internal adjustment mode, it is up to the operator to ensure that the internal parameters provided correspond to a convergence of all the reference axes at the reference point. In some embodiments, the configuration module (22) and the man / machine interface (13) may be arranged to alert the user to failure to meet this requirement. For example, the configuration module (22) may include (or cooperate with) a verification module verifying the seizures made and controlling the display of alert messages. In addition, the error rectification can be carried out by the configuration module (22), or another specific optional module 20, so as to automatically adjust this convergence by setting certain parameters (the c ;, in particular) not yet given. as long as enough parameters (eg e ;, f ;, as well as any two pairs c ;, any) have already been provided to identify the convergence point (PS). In variants of these previous embodiments concerning the internal setting modality, an optional operator assistance module (cooperating with, or implemented in, the configuration module (22)) is (or is) configured ( ) so as to calculate, from the internal reproduction parameters (21) and (23a) that they manipulate, and only when the axes of view are convergent, the relief deformation (numerical values of the parameters (23c)) deformation) induced by the current settings and present them to the operator via the interface (13) man / machine. The equations involved, on the sets of parameters chosen for example (with here, for the sake of generality, an individual parameterization of each capture area (f ;, l; h;) while this setting can be batch or global ), can be expressed as: k; = di2 / Di2 pi = bi2 / (Bi2 k,) if = bi2 li fi / (Bi2 L Di2) pi = 1; H / (h; L) Yj = (bj2 ci - B ~ 2 oi) / (Bj2 dj2) bj = (Bi2 Pi - bj2 Pi Pj) / (B12 dj2) In certain variant embodiments, the optional help module to the operator (cooperating with, or implemented in, the configuration module (22)) is (or are) arranged to show by graphical representation or synthesis of images in a static or interactive view, via the interface (13) man / machine, the effect on an object of predetermined shape (parallelepiped, sphere, ...) of the deformations involved by the current values of the parameters chosen by the user in the interface (13) 15 man / machine. These latter variants (presentation of the deformation involved in a textual or graphical form) give the operator a real control of the deformation that his choices imply and therefore justify the denomination of controlled relief deformation modality. External Adjustment Mode In some embodiments, the data representative of at least one configuration parameter (23) comprises data representative of the following external capture geometry parameters (23b): at least one parameter defining, directly or indirectly, the dimensions of the common base (BC) centered on the point of convergence (PS) and implicitly oriented in a reference specific to the capturing device, - at least one parameter defining the precise positioning of the straight line (LCi2) alignment centers, relative to the common base (BC) and parallel to its lines. at least one parameter defining the precise positioning of the optical centers (Ci) on these lines (LCi2) of alignment, - at least one parameter defining the precise position of the acquisition planes (PVi) parallel to the common base (BC) which define the capture zones (ZCi) as their intersection with the projection beams. lo This mark specific to the capture device may be arbitrary, but must allow the precise identification of the position of the convergence point that exists by construction in this modality and the 2 main directions of the common base (BC): X oriented according to the lines of future captures, Y oriented according to their columns. This marker may, for example, be centered on the point of convergence (PS), with its first and second axes respectively oriented along X and Y defined above relative to the orientation of the common base (BC). It could similarly be positioned at a reference point of the device (its center or the centroid of the optical centers for example) with its 1st and 2nd axes respectively oriented along the rows and columns of the capture zones. These dimensions of the common base (BC) can be expressed conventionally by 2 lengths Lb (width) and Hb (height) or alternatively a parameter setting ratio / diagonal. This positioning of the lines (LCi2) carrying the optical centers (Ci) and 25 parallel to x (lines of the common base (BC)) is, for example, defined by their distance Di2 to the common base (according to Z = X ^ Y ) and their dipping Pie (offset along Y vis-à-vis the convergence point (PS)). In an alternative and equivalent way, it can be expressed in polar in the plane (YZ) passing through the point of convergence (PS) by a zenith angle and the Euclidean distance to (PS) or, again by the zenith and the one of the two previous distances Di2 or Pie.

These positions of each optical center (Ci) on the line (LCi2) which carries it, can for example be expressed by their abscissa ci on this line (along X) with an origin for example in the plane (PS, Y, Z) , which amounts to considering these abscissae as lateral offsets of the optical centers vis-à-vis (PS), or polar in the plane (XZ) by the azimuth angles (angles of the XY plane or the YZ plane with each of the planes parallel to Y passing through the reference point and each optical center), or again, as detailed below, for regularly spaced optics, at least, per line (LCi2), an abscissa of an optical center and a constant difference lo Bi2 / q i2 between these optical centers. These positions of the planes (XY) carrying each capture area (ZCi) can be expressed for example by their distance to the common base (BC) or, equivalently, their distance fi to their associated optical center (Ci). Recall that these dimensional data make it possible to position is the plane carrying each capture zone (ZCi) which is then defined as the projection of the common base (BC), through (Ci), on this plane. Thus, these distances are of little importance because all the dimensional characteristics of the projection pyramids are proportional to them and only the relative values of these dimensions are relevant. It is, however, customary to make these distances explicit for greater comfort, even if it means using an implicit rule to fix them individually (fi), in batches (fi2) or globally (f). In this case, the information (25i) enabling the configuration (25) to be defined can be calculated for example (with the sets of parameters chosen as an example), according to one of the following sets of equations as a function of the distances imposed. : ^ fi imposed by the optics (OPi) used, ViE {1 ... n} x {1 ... m} Izi = Lb fi / Di2 hzi = Hb fi / Di2 dXi = ci fi / Di2 dYi = Pie fi / Di2 pXi = ci pYi = Pie dZi = fi pZi = Di2 3o 6 ^ fi2 imposed by the optics (OPi) used, Vi2E {1 ... n} Izi = Lb fie / Di2 hzi = Hb fi2 / Di2 dXi = c ; fie / Di2 dYi = Pie fi2 / Di2 dZi = fi2 pXi = ci pYi = Pie pZi = Di2

f f imposed by the optics (OPi) used Izi = Lb f / Di2 dXi = ci f / Di2 pXi = cihzi = Hb f / Di2 dYi = Pi2 f / Di2 dZi = f pYi = Pie PZi = Di2 In some embodiments when the optical centers are wanted regularly spaced on their alignment line, the set of internal parameters (23b) used by the configuration module (22) can be reduced by replacing, globally or in batches, the abscissa ci by the information representative of an abscissa (unique for example co, o) or by a straight line, for example c (1, i2) and the inter-optical distance separating the two optical centers that are supposed to capture the left and right views intended for the observer This inter-optical gap is then defined globally B or by a straight line Bit.These reduced parameters easily replace the previous ones for the generation of the configuration parameters (25i) by substitutions below in the preceding equations: cc01, i2) = c (1,0) + (il-1) B / q for the overall reduction, cc (i1, i2) = c (1, i2) + (i1) -1) B i2 / q i2 for the batch reduction.

According to various embodiments, as already mentioned, the device also incorporates a man / machine interface (13). This interface may be arranged here to enable interactive management (consultation, editing, saving) of the external capture parameters stored in (23b), then the configuration module (22) calculates and saves, in one or more means (12) of storage, data (25i) characteristics of each pair (COC;) optical sensor comprising sufficient parameters to correctly position, in the real scene, the optical centers (C;), (optional system) and the capture areas ( ZC;) (dimensional or angular approach).

In variants of the preceding embodiments relating to the external adjustment mode, an optional operator assistance module (cooperating with, or implemented in, the configuration module (22)) is configured to calculate, based on parameters (21) of recovery and (23b) external capture used, the deformation of relief (numerical values of the deformation parameters (23c)) induced by the current settings and present to the operator via the interface (13) man / machine. The equations involved, on the sets of parameters chosen for example, can be expressed as: k; = di2 / Di2 p; = bi2 / (Bi2 ki) s; = bi2 Lb / (Bi2 L) pi = Lb H / ( Hb L) y = (bi2c - Bi2o1) / (Bi2di2) 8j = (Bi2Pj2 - b2 Pi Pi2) / (Bi2 di2) In some alternative embodiments, the optional operator assistance module ( cooperating with, or implemented in, the configuration module (22) is arranged to show by graphic representation or synthesis of images in a static or interactive view, via the interface (13) man / machine, the effect on a object of predetermined shape (parallelepiped, sphere, ...) deformations involved by the current values of the parameters chosen by the user in the interface (13) man / machine. These latter variants (presentation of the deformation involved in a textual or graphical form) give the operator a real control of the deformation that his choices imply and therefore justify the denomination of controlled relief deformation modality. It should be noted that the parameters of this modality are said to be external because they describe the scene oriented elements of the multiple capture: convergence point (PS), common base (BC) and positions of the optical centers (Ci) from which the views are captured. , as opposed to the internal parameter setting which describes the individual and intimate geometrical settings of each pair (optical center, capture area).

These external parameters make it possible to simply characterize the internal parameters according to, for example, the following remarks and equations: P1, Di2, c and f, f1, or f1, common to the two parameterizations; / Di2 h; = Hbf / Di2 a; = dc / Di2 ei = Pi2f; / Di2 ~ o Thus, those skilled in the art will easily identify that many intermediate modalities between the 2 proposed here for example (internal adjustment and external adjustment) could be described and would allow to implement the invention under similar conditions .

In some embodiments, the data representative of at least one configuration parameter (23) comprise data representative of at least one parameter among the following deformation parameters (23c), defined for each position d observation ni: 20 • at least one factor ki of overall magnification and in particular at depth, • at least one parameter if control of potential nonlinear deformation (which transforms a cube into a truncated pyramid), • at least one pi rate relative magnification of width versus depth or desired horizontal anamorphosis factor / depth, • at least a rate pi of relative magnification of height relative to the desired vertical / horizontal width or factor of anamorphosis, • at least one rate yi of horizontal shear of the perceived relief, • at least one vertical rate of vertical shear of the relief perceived by an observer of dipping consistent with that expected.

These deformation parameters are given only as illustrative examples. They can be defined for each position, in batches or globally. Those skilled in the art may also define deformation in many other forms without departing from the spirit of the invention. It will also be noted that in some embodiments the system uses only one deformation parameter. This parameter may, in certain embodiments, relate to the magnification factor k i, which is not really a deformation but which gives the proportions of the images simply dilated or contracted with respect to the relief of the scene if E i = 1, y = 0, p = 1, p = 1 and 6 = 0. Note that in the case where k; = 1, we find the conditions for a perfect relief (rendered relief without deformation) mentioned above and a scene rendered with a relief identical to that of the captured scene. In those cases where the configuration parameters (23) comprise these deformation parameters (23c), the information (25i) can be calculated as follows (with the parameter sets chosen as an example): f; imposed, individually b'iE {1 ... n} x {1 ... m}, in batches Vi2E {1 ... n} or 20 overall, by the focal distance (s) optics (OP;), Iz; = L f; s; / (pi die) hz; = H f; ci / (pi pd; 2) dX; = fi (oi + yi di2) / (pi di2) dY; = f; (pi - Si di2) / (p1 di2) dZ; = f; pXi = (oi + y, di2) / (ki pi) PYi = (pi - Si di2) / (k, pp) PZ, = di2 / k + According to various embodiments, as already mentioned, the system also incorporates a interface (13) man / machine. This interface may be arranged here to enable interactive management (consultation, editing, saving) of the deformation parameters stored in (23c), then after consultation of the parameters (21) of restitution, the configuration module (22) calculates and saves, in one or more storage means (12), data (25i) characteristic of each optical-sensor pair (COC;), comprising sufficient parameters to correctly position the optical centers (Ci), and capture zones (ZCi) according to the above equations for example. This modality may, optionally, propose a choice of direct return to the set of parameters associated with an absence of deformation with or without constraint on the global magnification factor (s) ki. As mentioned above, the interface (13) may involve at least one optional operator assistance module (cooperating with, or implemented in, the configuration module), which shows it by graphic representation or synthesis of images. , the effect on an object of predetermined shape lo (parallelepiped, sphere, ...) of the deformations implied by the current values of the parameters managed in the interface. In variants of these embodiments relating to the deformation control modality, an optional operator assistance module (cooperating with, or implemented in the configuration module (22)) is configured to calculate, from the parameters (21) for rendering and (23c) deformation used, the internal or external settings of the recording device (numerical values of the parameters (23a) and / or (23b)) induced by the deformations chosen and presenting them to the operator. The equations involved, on the sets of parameters chosen for example, can be expressed, for the external parameters (23b) according to: ci = (oi + Yi di2) / (ki Pi) Pi2 = (pi-8i di2) / (ki p pi) Di2 = di2 / ki Lb = L ci / (ki pi) Hb = H if / (ki p pi) fi imposed, individually b'iE {1 ... n} x {1 ... m }, in batches Vi2E {1 ... n} or globally, by the focal distance (s) of the optics (OPi) used in the device,

and for the internal parameters (23a) according to ci = (oi + Yi di2) / (ki pi) Pi2 = (pi - 8i di2) / (ki p pi) Die = die / ki. 30 fi imposed, individually ViE {1 ... n} x {1 ... m}, in batches b'i2E {1 ... n} or globally by the distance (s) focal (s) optics (OPi), l = Lf if / (pi di2) h; = H f; ci / (pi p di2) a; = fi (oi + Yi di2) / (pi di2) ei = fi (pi - 5 di2) / (p pi di2) These last variants (presentation of the internal and / or external settings associated to a selected deformation) give the operator a means of self-training to direct control of the relief effect that could be useful in the other embodiments of the invention. Thus, the various methods make it possible to determine various configurations and, according to various embodiments where the device comprises a configuration module, allow the operator, through the various variants of the interface (13) and / or the module ( 22) of the configuration (and optional modules) of editing and transmitting to one or more storage means (12) the various data defined in the embodiments detailed above and representing the restitution constraints (device) and the choices of the user (direct adjustment of the internal geometry of the sensors, direct adjustment but guided by the point of convergence, of this collective collecting geometry, or indirect adjustment of the capture by direct control of the induced deformations) and then to define the parameters (25i) representative of a plurality of nxm pairs (COC;) optical-sensor constituting a capture device positioned in the scene and / or transmit them to the storage means (12).

Scalable configuration mode In some embodiments, all or part of the data from which the configuration module (22) determines said configuration (25) is variable over time, by data from the storage means (12). and / or the user interface (13) and defining at least one time reference (29) for the change of the data (23) representative of the configuration and / or the data (21) of restitution (in particular the privileged positions 30 d). 'observation). Thus, the settings of the positioning means (M) are dynamically made by the configuration module (22) during capture, from parameters from the storage means (12) and / or the interface (13) user and defining at least one time reference (29) for changing the parameters (25i) for setting the positions of the optical centers (Ci) and the capture areas (ZC;). Note that it is also possible in embodiments where the configuration module of the device does not generate the configuration but uses pre-established, that these configurations also take into account expected changes of all or part of these parameters. These data defining at least one time reference (29) can define discrete evolutions (couples (instant, new value) for example) as continuous evolutions (time functions associated with certain values, interpolated key values, ...). These data may, in some embodiments, be stored beforehand in the storage means (12) to define in advance variations of the capture over time or to come from storage means (12) and / or external or internal communication (as defined below). In a variant, some of these data are generated as a function of at least one action of the operator on the user interface (13), in particular, but not exclusively, in the videoconference modality described below. Thus, the user can define the variations of the capture, for example using a controlled navigation, for example, by input means such as a pointer (a mouse, a 3D pointing device for example) . The variation of all or part of the data representative of the configuration parameters (23) makes it possible, depending on the data set chosen (external, internal or deformation parameters), to control directly or indirectly, in a programmed or interactive manner, the evolution of the restored relief deformation and capture parameters (point of convergence, position of the optical centers, projection pyramids, etc.). The variation of all or part of the data representative of the reproduction 3o (21) makes it possible to adjust the capturing device according to the evolutionary positions of the observers. This allows interactively the follow-up of one or more observers to whom one wishes to propose an intrinsic relief viewing experience around which they can, within certain limits, move to apprehend it from various angles in a very natural way. Thus, in some embodiments, the settings of the positioning means (M) can be made dynamically during a capture. In some variants, the coordinates of the pairs (COC;) can be calculated in real time if the support (S) is moving relative to a fixed element of the captured scene, or if the support (S) is fixed or in motion and that the relief effect or the framing of the scene must be modified. The capture geometry will then be updated according to this information.

Video conference mode In some embodiments, the parameters (21) of the playback device 1s are provided by the playback device itself, at the time of capture. In this case, the device according to the invention is connected (directly or indirectly via a computer system) to the rendering device. In particular, certain embodiments of the device according to the invention are suitable for videoconferencing (via at least one communication network 20, for example of the Internet type). A videoconferencing module (cooperating with or implemented in the configuration module (22)) will for example manage a remote connection with a rendering device. This connection makes it possible to provide the parameters (21) for rendering the device according to the invention. For example, the videoconferencing module recognizes or receives from the remote user (for example from his videoconferencing module, or directly from his rendering device) information enabling identification of the rendering device. This information may for example include at least one identifier of the rendering device of the remote user. In a general manner, the processing means (11) (of or associated with the device according to the invention) may be arranged to recognize the rendering device and to use the corresponding parameters (21), for example transmitted or extracted storage means providing these parameters (for example indexed according to a plurality of identifiers in which the received identifier is found). In some embodiments, the remote rendering device may be associated with, or comprise, processing means executing a videoconferencing module. To take full advantage of the videoconference in relief for the two connected users, it will be possible, for each user, a device according to the invention with a videoconferencing module and a multiscopic reproduction device, such as for example a multiscopic screen. Depending on the case, the videoconferencing module may optionally control the display of a plurality of shots on a multiscopic device connected to the device according to the invention or a simple display device if the remote user does not have a device for multiple shots. In any case, the videoconferencing module will control the transmission of the captured (and possibly mixed) images, via at least one communication network, to the multiscopic rendering device of the remote user. According to various variants, the videoconferencing device (or the processing means associated with it) may either perform spatial and / or temporal mixing before transmission (via the connection), or transmit the nxm images captured to allow mixing by the processing means (possibly the videoconferencing module or a specific module) of the remote user. In any case, the mixing will be done according to the characteristics of the rendering device of the remote user, possibly obtained via their connection.

Processing and Corrections of Captured Images Using a configuration (25) as defined in this application, the device captures images or image sequences coherent with each other, which, when properly mixed, can be reproduced by a user. multiscopic rendering device restoring the relief of the scene. It is thus clear that the invention makes it possible to configure a capture of nxm images and to capture coherent images intended for multiscopic rendering in relief (once mixed), with a control of the deformation. In some embodiments, the n × m images or image sequences captured by the device may be transmitted to the storage means (12) (or other storage means accessible to the device), for example for mixing purposes. ulterior. In other embodiments, the nxm images or sequences of images captured by the device are subject to a spatial and / or temporal mixing which will allow their reproduction on a multiscopic device. This mix will be adapted to the multiscopic playback device chosen, for example using a mixing module (MX) using data (DR) representative of the technical characteristics of the playback device (spatial and temporal modes of the mixing, for example, masks of mixtures of nxm images on the useful area, frequency and phase of the time mixing ...) for generating data (DX) representative of the nxm images or sequences of images mixed appropriately for their reproduction on the playback device. In these embodiments where the images are mixed, the data (DX) representative of the mixed images can be transmitted to the storage means (12) and / or be directly transmitted to at least one rendering device corresponding to the device chosen when of the configuration (25) of the capture. In some embodiments, the device includes (or is associated with) processing means (11) arranged to synchronize the shots by the nxm couples (COC;) optical-sensor. It will be understood that it is possible to synchronize to capture different shots at the same time, but which can be transmitted at times offset in time (for a live mix) and / or recorded in 3o relationship with indices time shifted, so as to perform a temporal mixing later.

Thus, in some embodiments, the device comprises processing means (11) arranged to shift the transmissions of shots by the nxm couples (COC;) optical-sensor, at least according to a determined latency time according to the technical characteristics (DR) of the rendering device, for generating nxm images, or image sequences, suitably mixed for their reproduction on the rendering device. In these embodiments, the processing means (11) may be arranged to perform the recording of a plurality of time sequences of image streams of a scene to be captured and to effect a temporal mixing of the images intended for a given image. time mixing display device. Similarly, it is possible, particularly in the case of anaglyphs, to perform a colorimetric mixing of shots. Thus, various embodiments of the invention provide that the device comprises processing means (11) arranged to perform a spatial and / or temporal and / or colorimetric mixing of the captured images, intended for a multi-point rendering device. of view. This mixing will be performed according to the parameters (DR) defining the characteristics of the rendering device, as mentioned above. Thus, one or more image (s), or image sequence (s), are appropriately mixed for their reproduction on the rendering device. In some embodiments, the device comprises (or is associated with) processing means (11) arranged to perform a photometric and / or colorimetric and / or geometric correction of each of the nxm couples (COC;) optical-sensor. This (or these correction (s) is (or are) performed from data (DU, FIG. 1) coming from storage means accessible by these processing means (11) and representative of reference values acquired beforehand. during a photometric and / or colorimetric and / or geometric calibration, in order to correct any defects in the sensors (V;) and / or optics (OP;). In some embodiments, which are not exclusive of the preceding ones, the device comprises (or is associated with) processing means (11) arranged to carry out a photometric and / or colorimetric and / or geometric correction of each of the nxm couples (COC;) optical-sensor from data (DV, FIG. 1 ) representative of reference values acquired on the scene to be captured, under the control of the processing means (11), and depending on the photometric and / or colorimetric and / or geometric conditions in which the scene is captured. It will be appreciated that the reference values acquired at the factory (DU data) or at the scene (DV data) may for example include white balance values for photometry, or color values for colorimetry. For geometry, these values may concern, for example, measurements made on a calibration chart. It is known in the field of the present invention that optics and sensors sometimes have imperfections. Thus, the captured images can sometimes have aberrations and it may be useful to correct the captured images. In addition, the device according to the invention uses optical positioning means (M) (OP;) and / or sensors (V;) which can also sometimes be the source of defects in the captured images (because of a possible positioning defect). The present invention provides a capture of the scene on capture areas and proposes certain embodiments to solve the problems related to these possible defects, by performing a correction of the captured images. In some embodiments, the capture is performed on so-called raw capture zones (ZC), which have the dimensions defined by the configuration (25). The correction of the images captured in these capture zones is still possible, but for "barrel" type deformations, for example, the periphery of the corrected image (of identical resolution to the capture zones ZC;) will be observed an absence of information characterized by black areas larger or smaller depending on the nature of 3o the deformation to be taken into account. In other more advantageous embodiments, the capture is in fact carried out within so-called extended capture zones (ZC), which have larger dimensions (for example of the order of 10%) than the zones. predicted theoretical catch (C), calculated according to the configuration (25). Thus, by capturing the images in areas of capture (ZC;) of larger dimensions than those required for the multiscope prediction provided, it is possible to perform a correction of the captured images, without losing information. In these embodiments, the correction may be carried out by a correction module (implemented in, or cooperating with, the configuration module (22)) arranged to correct any defects of ~ o the capture within these zones. raw or extended capture used, and to generate corrected capture areas, the combination of these corrected capture areas (ZC;) forming a combination of information representative of nxm shots, exploitable by at least one determined rendering device. It will therefore be understood that, in these embodiments, it is the corrected capture zones (ZC) that will be the subject of the transmission and / or the mixing, with a view to multiscopic rendering.

Physical Arrangement of the Device FIG. 1 shows an exemplary embodiment of the pickup device with in particular an example of a possible configuration for the positioning means (M). In FIG. 1, positioning means are represented for the optics (OP;) and for the sensors (V;) but, more generally, the support (S) comprises means (M) for positioning the optics and / or sensors because it is sufficient to position at least the optical according to said parameters (25i) defined and adjust the decentering of the sensor (or vice versa), as will be understood by those skilled in the art of reading the present application . The support (S) may for example comprise at least one beam over 3o which are installed n n sensors (V;) (n = 3 in the non-limiting example of Figure 1, V sensors = 1 to 3). The support may naturally have a different structure or comprise for example a beam for the sensors (V1, V2, V3) and a beam for the optics (OP; = 1 to 3, Figure 1) as shown in Figure 1, the essential is to position the optical centers (C;) relative to each other and the sensors relative to their optical centers (C;). In addition, FIG. 1 represents a device having only a horizontal row of n optical-sensor couples (COC), but the invention provides, as previously explained, that the device may comprise several rows parallel to each other and Those skilled in the art will readily represent these embodiments by multiplying the arrangement of the row shown in FIG. 1. In this FIG. 1, the support (S) comprises means (M) for positioning the optoelectronic sensors (V; ) in a plane (PV;), and means (M) for positioning the optics (OP;) in the plane (PO;), according to the straight line (LCi2) of alignment. These positioning means (M) may comprise, for example, micrometric actuators, operable manually or electronically controlled. The sensors and the optics may have different positioning means (M) or common positioning means (M), the main point being to be able to distribute the sensors and the optics in a coordinated manner, as a function of the capture to be made. The positioning means (M) are arranged to allow relative displacement of the sensors (V;) and optics (OP;) of each of the optical (COC) couples. Those skilled in the art will appreciate, on reading the present invention, the possible arrangements for distributing the sensors and the optics on the support (S), the essential being that the means (M) for positioning the sensors (V; optical (OP;) on the support (S) are arranged so that the projection pyramids couples (COC;) optical-sensor respect the configuration (25) defined. In the example of FIG. 1, a plurality of sensors (V;) is mounted on the support (S) via, for example, carriages whose displacements are controlled by the sensor positioning means (M). These positioning means may for example comprise micrometric actuators (here, by way of non-limiting example three screw jacks whose bodies are integral with the beam and whose rods are integral with the carriages) moving the sensors horizontally. In the illustrative and in no way limiting example of FIG. 1, the distances between all the sensors (V;) are identical and the distances between all the optics (OP;) are identical. Note that in such a configuration, all the sensors (V;) may be distributed on the support (S) by a same device forming the means (M) for positioning the sensors (V;) and all the optics (OP; may be distributed on the support (S) by the same device forming the means (M) for positioning the optics. In this case, these means (M) positioning (or distribution) will be arranged to maintain an equal distance between the sensors and between the optics. In the example shown, each carriage comprises a slide system in which slides, under the control of positioning means (M), an arm oriented substantially vertically. In the example 15 shown, the positioning means of the vertical position of the sensors are separated from the distribution means of the horizontal position of the sensors but other embodiments may be considered. In the example shown in Figure 1, these means (M) for positioning the vertical position comprise a micrometer actuator 20, for example rack, comprising a geared motor driving a pinion which meshes with a longitudinal rack fitted to the arm. The support (S) is also equipped with means (M) for positioning the optics (OP;). In the example shown, the optics (OP;) are also mounted on the support (S) via, for example, carriages whose displacements are controlled by the optical positioning means (M) (OP;). As for the sensors, in the example of Figure 1, these positioning means may for example be micrometric actuators (here, by way of non-limiting example three screw jacks whose bodies are integral with the beam and whose rods are integral with the carriages) moving the optics (OP;) horizontally. In the example shown, each carriage comprises a slide system in which slides, under the control of positioning means (M), an arm oriented substantially vertically and movable by means of a micrometric actuator, for example rack, comprising a gear motor driving a pinion which meshes with a longitudinal rack equipping the arm. The positioning means (M) make it possible to position the sensors (V;) and the optics (OP;) with respect to the scene to be captured, as a function of the plurality of shots that it is desired to capture, defined by the configuration. In the case where the device comprises positioning means (M) arranged for the horizontal and vertical positioning of the sensors and optics, the device makes it possible to adjust the azimuth (horizontal) and the elevation or zenith (vertical) of the sockets. views, thanks to the horizontal and vertical offsets of the sensor (V;) and optics (OP;) of each pair (COC;) optics-sensor, depending on the configuration (25) determined. It should be noted that in certain embodiments, the vertical and / or horizontal positioning means (M) may be omitted, so as to have a device with fixed elevation or, respectively, with fixed azimuth, according to various embodiments. It will thus be understood from the foregoing description with reference to the illustrative and nonlimiting example of FIG. 1 that the present invention provides various embodiments for the physical arrangement of the device, particularly with regard to the number of pairs 20 ( COC;) optical-sensor, means (M) positioning and support (S) and that the skilled person will appreciate the reading of the present application the possible adaptations for this physical arrangement of the device, depending on the modes of achievements described above and the functions and modalities envisaged. In some embodiments, the support (S) comprises means for adjusting the height of the support and possibly the horizontality of the support. In some embodiments, the device according to the invention comprises at least one device for measuring horizontality (such as for example a spirit level), so as to make it possible to ascertain the horizontality of the device with respect to the stage (or on the horizon) and allow to adjust it thanks to the means of adjustment of the horizontality.

In some embodiments, the positioning means (M) are arranged to also allow the adjustment of the orientation of the sensors (V;), in rotation around an axis orthogonal to their plane and passing through their center.

In a combination of these two previous embodiments, the device may include (or be associated with) a horizontality control module. This module may, for example, control the means for adjusting the horizontality (motorized and servocontrolled to this module, in this case), on the basis of the information coming from the device for measuring horizontality (for example electronic). In another variant, this module may integrate the information from the horizontality measuring device and the information concerning the positioning of optics and sensors, to determine, depending on the inclination of the support, the elevation of each pair. optical sensor and the rotation of each sensor (around an axis orthogonal to their plane and passing through their center), so as to catch the inclination of the support is to obtain a configuration where the optics (OP;) and the sensors ( V;) are aligned on horizontal lines. In general, the device according to the invention will have been arranged in such a way that the plane (s) of the sensors (V;) are perfectly oriented with respect to the all of the device, so as to have capture areas perfectly parallel to each other. The sensors will therefore be mounted on the support with their lines correctly oriented horizontally (according to the direction X given as an example) and their columns correctly oriented vertically (in the direction Y given for example) to ensure that they are well parallel at the common base (BC). GENERAL CONSIDERATIONS ABOUT THE DEVICE AND ITS MEANS It will be noted here that the present description mentions storage means (12) 3o which are shown in FIG. 1 as belonging to the recording device, but it must be obvious that the invention makes it possible to distribute the various types of data described here in several different storage means and that, for example, one or more computer system (s) may (or may) cooperate with the device (and between them) to allow the various features described right here. Thus, the device according to the invention may comprise, or be associated with, processing means, storage means and an interface. Those skilled in the art will appreciate on reading the present application the possible configuration variations for the storage means and the data processing means (which may be associated with the device or included therein for example). The device may, for example, include communication means (with the necessary connections) to cooperate with remote processing means, supporting all or part of the modalities and functions described herein. In some embodiments, the storage means and / or the processing means and / or the user interface may (or may) be remote (s) outside the capturing device that will cooperate with them via a connector and / or communication means. Several functional aspects described in the present description are designated as being supported by modules executed on processing means. It will be understood in particular from the present application that the components of the present invention, as generally described and illustrated in the figures, can be arranged and designed in a wide variety of different configurations. Thus, the description of the present invention and the accompanying figures are not intended to limit the scope of the invention but merely represent selected embodiments. For example, the processing means may comprise at least one electronic circuit, such as an integrated circuit for example or by other types of arrangement of components, such as for example semiconductors, logic gates, transistors or other discrete components. Such processing means may also support one or more software application (s) or portion (s) executable code (s) within at least one software environment. The modules described here are therefore functionally identified because they may correspond to localized or distributed software applications or may be implemented by various types of processing means. The configuration module (22) can group the various functions described or require the cooperation of other modules, without departing from the spirit of the invention. The storage means (12) may be co-located with the processing means (11) or be in different Io computer systems and it is possible to implement the storage means (12) in various memories (storage or volatile ) co-located or distributed within a network, ensuring reciprocal connections for access to the data they contain. Data representative of parameters, constituents or various elements and features described herein may form computer files or even, as the case may be present only temporarily, for example in a volatile memory, when their use does not require their persistence in the system. Thus, the various types of data described may, as mentioned above, be from storage means of the device or storage means accessible by means of processing the (or associated with) the device, that is to say via means of communication with other systems, or even be present in the system only through means of communication. For example, it is possible for several systems to cooperate to control the capture by the device, exchanging the necessary data via communication channels (network, such as intranet or internet type). In addition, it is possible that the data used is obtained directly from internal communication channels, such as buses or other processes. It will therefore be understood that the various data may be from storage means of the storage memory type and / or the volatile memory type and / or come from internal communication means (in the processing means) or means of communication with the storage memory. other systems (external). These various possibilities are generally referred to herein as storage means (12), but this term can therefore, as the case may be, be interpreted as designating means (12) for storing and / or communicating internally or externally. s Indeed, one or more physical block (s) or logic (s) of machine instructions can, for example, be organized into an object, process, or function. In addition, the routines and instructions used by these processing means do not need to be physically located together, but may include disparate instructions stored in different locations which, when functionally and logically joined together, form the module and achieve the stated purpose for the module. A simple executable code instruction, or a plurality of instructions, may in fact be distributed among several different code segments or among different programs and stored in several memory blocks. Also, operational data may be identified and illustrated in processing means, and may be incorporated in any suitable form and organized into any suitable type of data structure. The operational data may be collected or may be spread over different locations including different finite storage devices, and may exist, at least partially, simply as electronic signals on a system or network. The device is sometimes referred to herein as having processing means in some embodiments, but one skilled in the art will appreciate that it may in fact be associated with such means or include them in its structure. The device comprises data processing means for performing the functions described and may therefore include (or be associated with) specific circuits performing these functions or include (or be associated with), in general, computing resources allowing to execute instructions fulfilling the functions described above. Those skilled in the art will understand that many alternative embodiments are possible.

Thus, for example, the various data representative of the parameters described here can be grouped together in the form of a file by type of parameter and the system can execute at least one program that supports all or some of the functions and methods described here, presenting the information relevant for the operator's choices. For example, the various described embodiments of the invention may be implemented in the form of a computer system executing the modules described herein, which communicate with the interface for the actions of the operator and storing data relating to various parameters and using at least one algorithm at least equivalent to at least one of the relationships (equations) described illustratively in detail in the present application. In other embodiments, it is several computer systems, for example networked, that will support all or part of the embodiments of the invention described herein.

The configuration module may communicate directly with (or include an interactive management application to communicate with) the human / machine interface (13). This interface (13) may include a touch screen for displaying and input or any equivalent means allowing the operator to interact with the device or system. The interface 20 (13) has been described here as input and display means, but one skilled in the art will appreciate that depending on the type of input and display means implemented, a specific application for the control such means may be necessary. Thus, it will be understood that the control of the interface has been described here as being carried out by the configuration module, in particular by a communication between the module and the interface, since the module sends data to the interface to allow their view and receives according to the actions of the user. On the other hand, it is possible to provide a control module, such as for example a specific application for the interface cooperating with (or controlled by) the configuration module. In general, the arrangement of the modules and the interface can be realized so that the invention in operation, allows to present to the operator, via the interface, at least one configuration choice software component (menu, tabs, ...) corresponding to at least one of the modalities of the configuration module (22), by proposing choices relating to at least one of the parameters available in this modality and / or to corresponding predetermined capture configurations to this modality. The selections made by the operator, via the interface, allow the configuration module (22) to determine the configuration to be used for the capture. The invention may provide components of choice (menus, tabs, ...) variables depending on the use and the operator, for example io so-called expert and beginner components, setting or not pre-imposed limits for the values of parameters (for example) and offering or not variations for the predetermined configurations. Likewise, the use may be guided, for example, by graphical representations of the results of the selections (as mentioned above) or graphical representations of the predetermined capture patterns. Similarly, for the image synthesis module, the invention may allow, via the interface, to present to the operator at least one software component of choice comprising at least one previously determined capture configuration and / or at least a virtual scene to 20 capture, to obtain images or sequences of images. The use for mixing may also be guided by software components of choice presenting the operator for example various types of playback devices.

The present invention also provides a method of verifying the use of a device according to the invention for capturing a first set of shots of a scene. This method comprises the following steps: capturing a second set of pictures of the same scene with a device according to one of the preceding claims, temporal and / or colorimetric and / or spatial mixing of the images of the first set with those of the second set, - display of the result of the mixing observation of the displayed result to deduce, in case of temporal stability and / or coherence of the image, the use of the device according to one of the preceding claims for capturing the first set of shots. Thus, if a set of pictures has been made using a device according to the invention, it is possible to check it with such a method. It should be obvious to those skilled in the art that the present invention permits embodiments in many other specific forms without departing from the scope of the invention as claimed. Therefore, the present embodiments should be considered by way of illustration, but may be modified within the scope defined by the scope of the appended claims, and the invention should not be limited to the details given above.

Claims (21)

REVENDICATIONS1. Device for simultaneous capture of a plurality of nxm shots intended for a relief rendition on at least one multiscopic reproduction device, characterized in that: - capture is carried out using a plurality of nxm couples ( COC;) Optical-sensor formed by optical nxm (OP;) each having an optical axis (AO;) and an optical center (C;), mounted on at least one support (S), whose optical axes (AO;) are parallel to each other and each associated with an optoelectronic sensor (V;) mounted on the support (S) and in which is defined a capture zone (ZC;) in which the projection of the scene is provided, the support ( S) comprises means (M) for positioning the optics (OP;) in at least one plane (PC;) perpendicular to the optical axes (AO;) and / or means (M) for positioning the sensors (V; in at least one plane (PV;) parallel to the plane (PC;) of the optical centers (Ci), - the means (M) of positioning of s sensors (V;) and / or optics (OP;) of each optical-sensor couple (COC;) are arranged so that the positions of the optical centers (C) and the capture areas (ZC) are in proportions defined by parameters (25i) for defining a capture pattern (25) which depend on: at least one configuration parameter (23) defining a desired deformation for the relief effect and / or a capture geometry, the capture providing a projection of the scene on the nxm capture areas (ZC;) nxm sensors (V;), through nxm pyramidal optical pickup beams supported on a rectangular base (BC) common to nxm optical beams and arranged in the scene to be captured, the nxm beams passing by one of the nxm centers (Ci) optics (OPi) aligned, in batches, on one or more line (s), said straight (LCi2) d alignment of the centers parallel to one of the main directions of this common base (BC), the capture areas (ZCi) corresponding to the intersection of these optical beams with at least one plane parallel to this common base (BC), the axes of sight (AVi) or main axes of the nxm optical beams passing through their center (Ci) their optics (Oi), all converging towards the center (PS) of the common base (BC), parameters (21) of restitution, defining or allowing to deduce at least the dimensions of a chosen useful area of the rendering device and the preferred observation positions (O;) chosen for the rendering device. 15 2. Device according to claim 1, characterized in that the parameter (s) (23) configuration comprises at least one set of parameters among the following sets of parameters: • a set of parameters (23a), called internal , capturing directly defining the capture geometry by at least the 20 positions, vis-à-vis a specific reference to the capture device, optical centers (Ci) aligned on the (or) right (s) (LC) , 2) alignment of the centers and the positions of the capture zones (ZCi), parallel to each other and oriented so that their lines are parallel to these straight lines (LCi2) of alignment of the centers, • a set of parameters (23b), said external, of capture defining or making it possible to identify the geometry of capture from the point of convergence (PS), by at least the dimensions of the common base (BC) centered on the point of convergence 3o ( PS), the positioning of the line (s) (LC i2) of alignment of the centers, the positioning of the optical centers (Ci) on these 10right lines (LCi2) of alignment of the centers and the position of the planes parallel to the common base (BC) containing the capture areas (ZCi). A set of deformation parameters (23c) defining possible deformations for the relief rendering of the scene. 3. Device according to one of claims 1 and 2, characterized in that the (s) parameter (s) (23) configuration comprises a parameter (23d) defining a relief restored without any deformation relative to the relief of the scene captured . 4. Device according to one of claims 1 to 3, characterized in that the parameter (s) (23) configuration comprises data representative of at least one parameter among the following parameters (23c) of deformation, defining transformations between the initial space of 1s the scene and the restitution space and defined either individually for each observation position n ° i, either in batches, or globally, by: • at least one factor k; overall magnification and in particular at depth, • at least one control parameter ci of the potential non-linear deformation (which transforms a cube into a truncated pyramid), • at least one rate p; relative magnification of width versus depth or desired horizontal anamorphosis / depth factor, • at least a relative rate of relative magnification of the height with respect to the desired vertical / horizontal width or factor of anamorphosis, 25 at least a rate y of horizontal shear of the perceived relief, • at least one rate b; vertical shearing of the relief perceived by a plunging observer in accordance with that expected. 5. Device according to one of claims 1 to 4, characterized in that the parameter (s) (23) configuration includes the following parameters (23b) of external capture geometry: -at least one parameter defining, relatively at the common base (BC), positioning the line (s) (LCi2) of alignment of the centers, - at least one parameter defining the positioning of the optical centers (Ci) on these lines (LCi2) of alignment centers, at least one parameter defining directly or indirectly the dimensions of the common base (BC), at least one parameter defining the precise position of each plane parallel to the common base (BC) bearing at least one capture zone; (ZCi). 6. Device according to one of claims 1 to 5, characterized in that the parameter (s) (23) configuration comprises the following internal parameters (23a) of capture geometry: -at least one parameter defining the positions of the optical centers (Ci) vis-à-vis a reference specific to the capturing device, -at least one parameter defining the orientation of the line of sight (AV1) of each projection pyramid, - at least one parameter defining the geometry of the effective projection pyramid of each capture zone (ZCi). 20 7. Device according to one of claims 1 to 6, characterized in that the positioning means (M) are pre-configured in the factory according to a configuration (25) defining a determined relief rendering for a determined restitution device. 8. Device according to one of claims 1 to 7, characterized in that it comprises data processing means (11) executing a configuration module (22) determining the parameters (25i) for defining the configuration (25). capture by the positions of the capture areas (ZCi) and the optical centers (Ci) to be used according to the configuration parameters (23) and the reproduction parameters (21), from the choices made by an operator, via an interface (13) man / machine of the device. 9. Device according to claim 8, characterized in that the configuration module (22) is arranged to allow the operator, via the interface s (13) man / machine, to enter and / or select and / or setting at least one configuration parameter (23) and the reproduction parameters (21) among a plurality of parameters from storage means (12) accessible to the configuration module (22), the latter generating the configuration according to the choices of the operator. to 10. Device according to one of claims 8 and 9, characterized in that the configuration module (22) is arranged to allow the operator, via the interface (13) man / machine, to select at least one configuration (25). ) capturing among a plurality of previously calculated configurations from storage means (12) accessible to the configuration module (22). 11. Device according to one of claims 1 to 10, characterized in that the means (M) for positioning are manual. 12. Device according to one of claims 1 to 10, characterized in that the means (M) for positioning are motorized. 20 13. Device according to one of claims 8 to 10, characterized in that the positioning means (M) are motorized and slaved to the module (22) configuration. 14. Apparatus according to claim 13, characterized in that the settings of the positioning means (M) are dynamically made by the configuration module (22) during a capture, from parameters from the means ( 12) and / or the user interface (13) and defining at least one time reference (29) for the change of the parameters (25i) for defining the positions of the optical centers (Ci) and the capture areas (ZC). ;). 15. Device according to one of claims 1 to 14, characterized in that it comprises processing means (11) arranged to synchronize the shooting by nxm couples (COC;) optical-sensor. 16. Device according to one of claims 1 to 15, characterized in that it comprises processing means (11) arranged to shift the transmissions, for a live mixing, shooting nxm couples (COC; sensor, at least according to a latency time determined from the technical characteristics (DR) of the rendering device, to generate one or more image (s), or image sequence (s), mixed (s) appropriately for their return to the playback device. 17. Device according to one of claims 15 and 16, characterized in that it comprises processing means (11) arranged to perform a spatial and / or colorimetric and / or temporal mixing of the captured images, intended for a multi playback device. -points of view, according to the parameters (DR) defining the characteristics of the rendering device. 18. Device according to one of claims 1 to 17, characterized in that the positioning means (M) are arranged to also allow the adjustment of the orientation of the sensors (V;), in rotation about an axis (AK; ) orthogonal to their plane and passing through their center. 19. Device according to one of claims 1 to 18, characterized in that it comprises processing means (11) arranged to perform a photometric correction and / or colorimetric and / or geometric each of the nxm couples (COC; sensor from data (DU) coming from storage means accessible by these processing means (11) and representative of reference values acquired beforehand during a photometric and / or colorimetric and / or geometric calibration, for correcting possible defects of the sensors (V;) and / or optics (OP;). 20. Device according to one of claims 1 to 19, characterized in that it comprises processing means (11) arranged to perform a photometric and / or colorimetric and / or geometric correction of each of the nxm couples (COC; sensor from data (DV) representative of reference values acquired on the scene to be captured, under the control of the processing means (11), and depending on the photometric and / or colorimetric and / or geometric conditions in which the scene is captured . 21. A method of verifying the use of a device according to one of the preceding claims for capturing a first set of shots of a scene, characterized in that it comprises the following steps: to capture a second set of shots of the same scene with a device according to one of the preceding claims, - temporal and / or colorimetric and / or spatial mixing of the images of the first game with those of the second game, - display of the result of the mixing 15 observation of the displayed result to deduce, in case of temporal stability and / or consistency of the image, the use of the device according to one of the preceding claims for capturing the first set of shots.