WO2005096637A1 - Systeme de projection 3-d - Google Patents

Systeme de projection 3-d Download PDF

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Publication number
WO2005096637A1
WO2005096637A1 PCT/DE2005/000583 DE2005000583W WO2005096637A1 WO 2005096637 A1 WO2005096637 A1 WO 2005096637A1 DE 2005000583 W DE2005000583 W DE 2005000583W WO 2005096637 A1 WO2005096637 A1 WO 2005096637A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
projection system
fields
mirror
image signal
Prior art date
Application number
PCT/DE2005/000583
Other languages
German (de)
English (en)
Inventor
Stefan Schrodt
Original Assignee
Stefan Schrodt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stefan Schrodt filed Critical Stefan Schrodt
Publication of WO2005096637A1 publication Critical patent/WO2005096637A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/22—Stereoscopic photography by simultaneous viewing using single projector with stereoscopic-base-defining system
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/156—Mixing image signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/207—Image signal generators using stereoscopic image cameras using a single 2D image sensor
    • H04N13/218—Image signal generators using stereoscopic image cameras using a single 2D image sensor using spatial multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/239—Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/334—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spectral multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/346—Image reproducers using prisms or semi-transparent mirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens

Definitions

  • the invention relates to a 3D proje ⁇ limssystem with an image display device for three-dimensional representation of objectivity th on a projection surface and an image recording device for generating an image signal which can be used with the 3D projection system.
  • a camera or data source for image recording or reproduction and a respective image display device for displaying the respective image are used for each viewing view of the human eye.
  • the differentiation between left and right view is realized by setting a property of the light used for the right and left view.
  • the light for both views can differ in polarization or wavelength.
  • the viewer then uses a corresponding visual aid that enables only the respective view to be captured by the eye in question.
  • three-dimensional projectors offer a wide range of applications.
  • the three-dimensional projection can also be a valuable aid for the design of rooms, vehicles, etc.
  • temporal processes for example, can be displayed three-dimensionally in a film.
  • the object of the invention is to develop a conventional projection system for the three-dimensional representation of objects in such a way that its production costs can be minimized and, moreover, the synchronization of the two associated fields is simplified.
  • the invention solves this problem in a surprisingly simple manner even with a 3D projection system with the features of claim 1.
  • the 3D projection system then works with an image display device for three-dimensional representation of objects on a projection surface with an image signal, which comprises both views of an object to be displayed, separated vertically or horizontally from each other, whereby the display of the image signal with a single image display device overlaps both views of the object on the projection surface to produce a 3D representation of the object ,
  • image signal can include both the electrical image signal, ie the signal which is necessary for displaying the image on the electrical level, and an optical image signal, ie an image.
  • a single image for the image display device thus has both object views separated horizontally or vertically, which of course are also processed at the same time, so that the otherwise usual synchronization problems between the stereo fields cannot occur at all.
  • Today's image display devices have a widescreen format, for example a: 3 format. These are characterized by the fact that the horizontal image stretch is larger than the vertical image stretch.
  • a widescreen format for the 3D representation in the SD projection system according to the invention it can be expedient if both views are arranged one above the other in the horizontal direction as stereographic fields of an object to be displayed. It is thus achieved that the original image format, which according to the invention is now taken up by the two partial views, is used optimally, since the long image edge is split into two parts. It can thus be achieved that Both stereo fields, which are superimposed on the projection screen, also have a widescreen format, which improves the viewer's impression.
  • Both stereo fields expediently have an identical number of pixels in the horizontal and vertical directions, so that no size differences in the image have to be compensated for. In certain embodiments, however, it can also be expedient if both stereo fields are only included in the image signal with an identical pixel length-to-width ratio, but the absolute size is different in the horizontal and vertical directions. In this way, for example, differences in the imaging scale in the optical beam path can also be compensated for the different views, so that ultimately the two views are shown on the projection surface with identical horizontal or vertical dimensions.
  • the two stereo valley pictures together have a vertical number of pixels which is identical to the horizontal number of pixels of the picture element.
  • the vertical edges of the stereo fields lie in the direction of the horizontal edge of the picture element, i.e. both fields are rotated by 90 ° on the panel.
  • a mirror means for simultaneously reflecting the two half pictures is advantageously provided to the screen, comprising two mutually adjacent to each other in a predetermined 'angle arranged and in each case one field associated mirror surfaces.
  • the two mirror surfaces of the mirror device can be flat, the angle between the two mirror surfaces being less than 30 °, in particular smaller; Is 20 °.
  • the tilting of the two mirror surfaces leads to each other ultimately to the superimposition of the two fields on the projection surface, the two fields being arranged in a single image signal, ie image, one above the other before this uneven reflection. Accordingly, this superimposition is canceled by the mirror device designed as described and the two fields are aligned with one another.
  • the angle between the two mirror surfaces can be adjusted by tilting the mirror surfaces relative to one another in order to bring the two fields onto the projection surface again when the distance between the mirror device and the projection surface changes.
  • the tilting axis of the two adjacent mirror surfaces of the mirror device runs parallel to the horizontal axis on the projection surface, which stipulates that the two fields arranged one above the other on the projection surface can be converted into one another by simply tilting in the vertical direction of the mirror surfaces ,
  • the mirror device has a further, flat, third mirror surface assigned to both fields, which is connected upstream of the two first mirror surfaces in the projection direction. It is particularly advantageous if the third mirror surface is arranged in such a way that an image passing through the mirror device is rotated through 90 ° to the optical axis. This ensures that two fields arranged one above the other in the horizontal direction are upright again when passing through the mirror device, so that the two fields, as described above, are overlapped on the projection surface by the mutual tilting of the first two mirror surfaces can be. This also ensures that the projected 3D image has a widescreen format, which improves the visual impression of the 3D projection.
  • the invention uses conventional means for differentiating the two fields on the projection surface, with which the light for one field is distinguished from the light of the other field can be, for example, by polarizers or wavelength filters.
  • the invention proposes several options for generating an image signal as described above, which comprises both stereo fields simultaneously, the fields being arranged one above the other.
  • an image signal can be recorded with two image recording devices, each of which simultaneously records a view of the object in the form of an image signal, wherein an image divider is included which mixes the two image signals of the two fields into a single image signal, such that the two views of the object are arranged horizontally or vertically one above the other in the individual image signal.
  • the two image recording devices are designed as widescreen cameras and are identical, the cameras being rotated by 90 ° or 270 ° to the optical axis.
  • the image signal generated in the image divider with the two stereo fields arranged one above the other can be stored in a memory, for example in a video recorder, a DVD recorder, a hard disk recorder or another data store.
  • the image recording device comprises a single image recording device, as a result of which the costs can be further reduced.
  • the optical system of the image recording device is preceded by an optical attachment device with which two stereo half images of an object are captured simultaneously and the two stereo half images on the camera panel are combined to form an overall image by means of existing optical mirror surfaces.
  • This overall image is distinguished by the fact that the two stereo half-images are arranged one above the other and the composite image is projected by the optical attachment onto the recording optics of the image recording device.
  • the optical attachment device for processing each field has four flat mirror surfaces, each of which projects the corresponding field onto the section assigned to this field on the recording optics of the image recording device.
  • the image recording device can advantageously have a camera with a widescreen format, this camera being rotated by 90 ° or 270 ° around the optical axis.
  • FIG. 1 shows an image recording device for generating an image signal for the 3D projection system according to the invention
  • FIG. 3 shows a mirror device for use with a 3D projection system according to the invention
  • FIG. 4 shows the mirror device shown in FIG. 3 in a perspective view
  • 5a shows an optical attachment for capturing one of the two object views in the camera
  • 5b shows a double optical attachment for capturing both object views in a camera
  • Fig. 6 shows the attachment device shown in Fig. 5a in a perspective view
  • FIG. 1 shows such a situation.
  • An object 0 is recorded with two cameras 51, 52, which capture different views of the object due to their spacing from one another. It is noteworthy here that both cameras have a widescreen format and are rotated by an angle of 90 ° around their optical axis, which is indicated by the indicated arrows.
  • Both image signals from cameras 51, 52 are fed to an electronic image splitter 60, which reproduces both views in a single image signal 70a, 70b. "In the present case, one of the image signals 70a, 70bau can be selected on the image divider.
  • Reference numeral 72 is the view of the left eye, ie the left camera and the right view shown with reference numeral 71. Both image signals 70a, 70b differ in their horizontal and vertical image arrangement.
  • the most expedient arrangement of the views 72, 71 for the 3D projection system according to the invention is shown by the image signal 70b, in which the two views are arranged one above the other in the horizontal direction as stereographic fields of the object to be displayed. As can be seen, both object views are rotated by 90 ° around the optical axis.
  • the image signals present here electrically can be stored in a data memory 80.
  • the image signal 70b generated as shown in FIG. 1 can now be used with a 3D projection system designed according to the invention for the three-dimensional representation of the object O.
  • the system consists of a projector 10, which projects the image signal just described via a mirror device 30 onto a projection surface 40, two interference filters 20b, 20a being arranged in the optical beam path to separate the images.
  • the mirror device 30 comprises two flat mirror surfaces 32, 31, which are slightly tilted relative to one another by an angle ⁇ .
  • the mirror device 30 and the projector 10 are aligned with one another such that one stereo image in the image signal is assigned to the deflecting mirror 32 and the other stereo field 71 in the image signal 70b is assigned to the mirror 31, so that both object views in the image signal are at a different angle to the Projection screen to be thrown.
  • the tilt angle can now be set such that the two partial images overlap exactly and the desired 3D effect occurs. It goes without saying that the viewer has to differentiate the two overlapping fields in the eye with corresponding interference filters so that the 3D effect can occur.
  • FIGS. 3 and 4 show a further mirror device 30 which is suitable here for the projection of an image signal which corresponds to that in FIG. 1 with the reference symbol 70a.
  • FIG. 3 shows the mirror device 30 in a plan view, a front view and a side view together with the other parts of the SD projection system according to the invention.
  • the mirror device shown in FIG. 3 also comprises two divided mirror surfaces 31, 32 that are tilted slightly toward one another so that the respective fields overlap again on the projection screen 40.
  • the mirror device shown in FIG. 3 has a further plane mirror 33 arranged as an input mirror. This is now arranged in such a way that an image passing through the mirror device is rotated through 90 ° to the optical axis. In this way it is achieved that the fields arranged one above the other lie vertically one above the other on the screen and that the two fields can be overlapped on the screen 40 by simply tilting the two mirrors 31, 32.
  • the structure of this mirror device 30 is particularly clear from the perspective view of the device 30 shown in FIG. 4.
  • the mirror device 30 has a base 35 as a supporting part, on which a column 34 with a 45 ° bevel is attached, which supports a flat mirror 33.
  • the image signal 70a falls on the flat mirror, see FIG. 1 and is thrown there onto the two partial mirrors 31, 32, which are arranged with respect to one another at the tilt angle a.
  • this tilt angle can be set by means of a mechanism, not shown, so that the distance between the mirror device 30 and the projector surface can be variable.
  • the deflecting mirror 32 is supported on the side part 36 fastened to the base 35.
  • the connection between parts 36 and 32 is rigid, but it can also be provided that this is adjustable.
  • the optical axis of the system accordingly runs from linls on mirror 33 upward to mirror 32 or 31, as described, and subsequently leaves the device to the right. All three mirrors are arranged such that the optical axis on the mirror 33 and on the mirror 32, 31 occurs at an angle of 45 ° to the mirror. It goes without saying that the image signal on the mirror 33 is to be adjusted such that, as shown in FIG. 3, each of the deflecting mirrors 32, 31 reflects only one of the fields 71, 72. In order to be able to provide as little image loss as possible, the distance between the two deflection mirrors 31, 32 is kept very small. As the person skilled in the art recognizes, the mirror device 3-0 shown in FIG.
  • FIG. 1 shows an image recording device which can generate the image signal required for the SD projection system according to the invention.
  • this device has the disadvantage that two cameras are required for this, ie one camera each for recording one of the two views of the object.
  • a special optical Vorsatzeinrich ⁇ tung front of the camera that need to be overcome. , so that ultimately the required image signal 70a, see FIG. 1 can be generated with a single camera, see FIGS. 5a, 5b and 6.
  • the attachment device with reference to the front view 5a and perspective view 6 for the generation of one of the stereo fields on the panel 53 of the camera 50.
  • FIG. 5b shows the conditions in a front view. 5b also shows that the camera 50 is again rotated by 90 ° so that the fields are arranged one above the other in the horizontal direction on the panel, ie in the direction in which the panel 53 of the camera 50 has its greatest extent.
  • the explanations given in FIG. 5a for the one view are repeated for the second view 01, so that reference can be made to them.
  • the resulting image signal which can be stored, for example, on a data memory, is shown on the panel 53 and corresponds to that shown with the reference symbol 70a in FIG. 1.
  • the invention enables simple and inexpensive 3D film or image viewing systems to be implemented which are considerably more attractive than conventional systems.
  • D-projection system projector interference filter / polarizing filter mirror device 32 deflecting mirror input mirror column base side part projection flat image recording device camera left view camera right view panel lens electronic image divider, b image signal right view left view data storage attachment 91 Image entry opening

Abstract

La présente invention a pour objet d'apporter à un système de projection courant destiné à la représentation tridimensionnelle d'objets, des modifications qui permettent de minimiser ses frais de réalisation et de simplifier la synchronisation des deux demi-trames associées. A cet effet, l'invention concerne un système de projection 3D comprenant un dispositif d'affichage d'image destiné à la représentation tridimensionnelle d'objets sur une surface de projection, au moyen d'un signal d'image (70a, 70b) qui comprend les deux vues d'un objets à représenter (O), séparées entre elles verticalement ou horizontalement, la représentation du signal d'image au moyen d'un dispositif d'affichage d'image unique, permettant la superposition des deux vues de l'objets sur la surface de projection (40), pour produire une représentation 3D de l'objet.
PCT/DE2005/000583 2004-04-01 2005-04-01 Systeme de projection 3-d WO2005096637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004016762A DE102004016762A1 (de) 2004-04-01 2004-04-01 3-D-Projektionssystem mit einer Bildquelle und/oder einem Bildanzeigegerät
DE102004016762.1 2004-04-01

Publications (1)

Publication Number Publication Date
WO2005096637A1 true WO2005096637A1 (fr) 2005-10-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/000583 WO2005096637A1 (fr) 2004-04-01 2005-04-01 Systeme de projection 3-d

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DE (1) DE102004016762A1 (fr)
WO (1) WO2005096637A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016095458A (ja) * 2014-11-17 2016-05-26 オリンパス株式会社 内視鏡装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610118A1 (fr) * 1987-01-23 1988-07-29 Melik Hovsepian Michel Dispositif de relief stereoscopique, pour projecteur de television ou de diapositives
JPH07288851A (ja) * 1994-04-18 1995-10-31 Sony Tektronix Corp 立体プロジェクタ装置
EP0971261A2 (fr) * 1998-07-09 2000-01-12 Matsushita Electric Industrial Co., Ltd. Dispositif pour obtenir un image stéréoscopique
US20020186466A1 (en) * 2000-01-26 2002-12-12 Christian John Alexander Apparatus for the optical manipulation of a pair of landscape stereoscopic images

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610118A1 (fr) * 1987-01-23 1988-07-29 Melik Hovsepian Michel Dispositif de relief stereoscopique, pour projecteur de television ou de diapositives
JPH07288851A (ja) * 1994-04-18 1995-10-31 Sony Tektronix Corp 立体プロジェクタ装置
EP0971261A2 (fr) * 1998-07-09 2000-01-12 Matsushita Electric Industrial Co., Ltd. Dispositif pour obtenir un image stéréoscopique
US20020186466A1 (en) * 2000-01-26 2002-12-12 Christian John Alexander Apparatus for the optical manipulation of a pair of landscape stereoscopic images

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HAYMAN H J G: "A 3-D MONITOR FOR ROTATED SPLIT-SCREEN TELEVISION", IMAGE TECHNOLOGY, BRITISH KINEMATOGRAPH SOUND AND TELEVISION SOCIETY, LONDON, GB, vol. 77, no. 6, 1 June 1995 (1995-06-01), pages 152 - 154, XP000504103, ISSN: 0950-2114 *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016095458A (ja) * 2014-11-17 2016-05-26 オリンパス株式会社 内視鏡装置

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