EP1964413A1 - Procédé et agencement permettant une représentation monoscopique d'au moins un secteur d'une image sur un dispositif d'affichage autostéréoscopique et appareil de reproduction d'informations muni d'un tel agencement - Google Patents

Procédé et agencement permettant une représentation monoscopique d'au moins un secteur d'une image sur un dispositif d'affichage autostéréoscopique et appareil de reproduction d'informations muni d'un tel agencement

Info

Publication number
EP1964413A1
EP1964413A1 EP06818073A EP06818073A EP1964413A1 EP 1964413 A1 EP1964413 A1 EP 1964413A1 EP 06818073 A EP06818073 A EP 06818073A EP 06818073 A EP06818073 A EP 06818073A EP 1964413 A1 EP1964413 A1 EP 1964413A1
Authority
EP
European Patent Office
Prior art keywords
image
representation
display device
resolution
pixels
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06818073A
Other languages
German (de)
English (en)
Inventor
Timo Ropinski
Frank Steinicke
Klaus Hinrichs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westfaelische Wilhelms Universitaet Muenster
Original Assignee
Westfaelische Wilhelms Universitaet Muenster
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 Westfaelische Wilhelms Universitaet Muenster filed Critical Westfaelische Wilhelms Universitaet Muenster
Publication of EP1964413A1 publication Critical patent/EP1964413A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
    • 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
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • 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
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers

Definitions

  • the invention relates to a method and an arrangement for monoscopic display of at least a portion of an image on an autostereoscopic
  • the invention also relates to an information reproducing apparatus having such an arrangement.
  • display device is here understood in general to be any type of display which is designed to display digital images and consists of a plurality of pixels commonly referred to as “monitor pixels”. These may be TV sets, computer screens for one or more users, but also displays of portable devices, e.g. portable DVD devices, mobile phones or portable computer games.
  • monitor pixels may be TV sets, computer screens for one or more users, but also displays of portable devices, e.g. portable DVD devices, mobile phones or portable computer games.
  • “Monitor pixel” serves to distinguish the physically actually existing elements of the display from the virtual image pixels of a digital image.
  • image is generally understood here to represent information that can be displayed on the display device in the data processing sense, that is, for example, a scene of a movie, an icon, a graphic, a text, and the like.
  • images to be displayed here are overlapping or juxtaposed so-called windows with different contents, which are displayed in front of a common background, generally the so-called desktop.
  • windows for example, the window associated with a running word processor, may be referred to as
  • two-dimensional information or “2D information” for short, information such as Texts, in another window hereinafter referred to as "three-dimensional information” or “3D information” for short, three-dimensional images, e.g. generated by a program for the visualization of medical sectional image series.
  • information reproducing apparatus here means devices for the visual reproduction of all types of information in which an arrangement according to the invention can be advantageously integrated, such as navigation systems for vehicles, game consoles or mobile phones, PDAs and the like.
  • Autostereoscopic display devices of the type in question have a plurality of active or passive beam splitters or parallax barriers separating the monitor pixels such that at least two
  • Fields are generated, one of which is intended for the left and one for the right eye of a viewer of the display device.
  • field is not necessarily a "half”, that is, e.g. only half of the columns available on the display device used is to be understood, but that is generally understood by this term one of two images, which is intended for either the left or right eye of a viewer and together with to supplement a field intended for the other eye to a stereoscopic image.
  • the mentioned active or passive beam splitters or parallax barriers can be designed differently and, for example in the form of lenses, separate groups of adjacent monitor pixels (lens scanning technique as in so-called lenticular displays) or in Form of vertically adjacent barriers Monitor pixels of adjacent columns in P (P e N +1 P> 2) Separate fields (so-called vertical interlacing).
  • Display devices such as e.g. Computer screens or cinema screens to represent images in such a way that offers the viewer a three-dimensional, spatial impression. Since spatial, stereoscopic vision results from the fact that the left eye of a viewer supplies an image to the brain of the observer, which surrounds the image supplied to the brain by the right eye
  • Eye distance is offset, the two images are then assembled by the brain into a spatial image, all stereoscopic display methods based on the generation of at least two related fields of the same scene, where one field for the right eye, the other field for the left eye intended by the viewer.
  • the change occurs very quickly (e.g., 50 times per second), the continuous change is not perceived by the user, so that instead of the user's brain, the two images time-shifted by the left and right lenses, respectively, are assembled into a stereoscopic image.
  • a fixed or switchable parallax barrier is arranged such that the light from a monitor pixel only to the left, the light of a horizontally adjacent
  • Monitor pixels can only reach the right eye of the viewer.
  • Displays with beam splitters have proved to be particularly advantageous, in which, for example, the fields which are simultaneously displayed in the display are guided to the right or left eye of one or more observers by means of lenses.
  • These displays not only allow, depending on the design of the beam splitters used to generate four or more fields such that the eyes of two or more observers two fields at a time can be assigned in such a way that two or more viewers can each see a spatial image, they also allow the area within which the eyes of a viewer must be located to give the desired three-dimensional impression of that displayed on the display To obtain a picture, to make relatively large, so that the
  • Viewers in moderation can freely move to the monitor.
  • such displays also make it possible to realize a tracking of these sweet spots in such a way that a recognition device continuously evaluates where the eyes of a viewer are relative to the monitor and then tracks the 3D points as a function of the recognized eye position become.
  • DE 103 39 076 A1 proposes a focusing element in the form of a so-called
  • Sweet spot unit wherein the display comprises lighting elements and an information-bearing image matrix and the sweet-spot unit is synchronized with the image matrix.
  • this solution is extremely expensive, both optomechanical and electronic.
  • the invention has for its object to provide a method and an arrangement for monoscopic display of at least a portion of an image on an autostereoscopic display device that can be applied or retrofitted even in simple autostereoscopic display devices with a number of parallax barriers or beam splitters in a simple and cost-effective manner so that areas of images can also be displayed two-dimensionally with the corresponding autostereoscopic display device.
  • the device should allow the device to simultaneously represent certain image areas two-dimensional, other image areas three-dimensional.
  • the invention is procedurally achieved by a method for monoscopic display of at least one image area of an image on an autostereoscopic display device with a resolution of M x N matrix-like arranged in M columns and N lines monitor pixels (M, N e N + ) and a
  • the invention is thus based on the idea of rendering the areas to be monoscopically displayed on a virtual screen with a lower resolution than the actual resolution of the autostereoscopic display device and then transforming the information for this virtual screen to the full resolution, so that a viewer with the left and the right eye Seeing pictures that are very similar or even identical to each other, so that gives the viewer a two-dimensional impression.
  • the representation of the selected region is produced with a resolution of M / P ⁇ N / P, that is to say a resolution which is exactly reduced by the number of fields to be generated in terms of the column and line.
  • the representation produced can then be transformed particularly easily to the resolution of the display device and read out onto the display device in such a way that the same pixel values are represented in in each case two monitor pixels which are involved in the representation of the selected region and correspond to one another spatially in two associated fields , Matching locally means that for a viewer of the fields, the pixels appear to come from the same location, or in other words: a pixel that appears to have the coordinates x, y in the right field also appears to have these coordinates in the left field.
  • This embodiment of the method advantageously has the effect that exactly the same "scene" is displayed in two associated fields in selected areas, which produces a two-dimensional impression on the viewer.
  • an image pixel is usually associated with an m-dimensional vector, the so-called pixel value (m e N +) whose individual components correspond to intensity levels of mostly three or four monitor subpixels, these subpixels forming a monitor pixel.
  • pixel value m e N +
  • 800 x 600 pixels are actually 3 (or 4) x 800 x 600 individually controllable pixels that allow the color representation of an image.
  • the "pixel value” can thus, in black and white representation, actually a single scalar value from a predefined range of values (then usually called grayscale) and assume, for example integer values between 0 and 256, the pixel value can also be a three or three be four-dimensional vector.
  • this advantageous embodiment does not play a role, because in the case of a four-dimensional vector, for example, all four components of a pixel of the created representation are represented in two mutually correspondingly corresponding monitor pixels of associated fields.
  • the selected image area is e.g. a text
  • this text ultimately presents itself to the viewer as if it were printed on a paper in the usual way or as if it were displayed on a standard, non-autostereoscopic screen.
  • the autostereoscopic display device used for carrying out the method is a display with vertical beam splitters for generating two fields, the respectively two locally corresponding pixels in the fields can actually be generated by two vertically horizontally adjacent vertically adjacent monitor pixels.
  • the resolution in the image area to be displayed two-dimensionally may be reduced to one quarter of the resolution actually possible from the purely physical number of monitor pixels and then to prevent accordingly also the length and width of the selected area of a
  • Presentation is only half of the actual size, again transformed up to the actual resolution of the display device. It should be emphasized at this point that it does not have to be necessary according to the environment of use of the method to reduce the line resolution of the image areas to be displayed two-dimensionally. Thus, for example, it may be provided to produce a representation with a resolution of 800 ⁇ 1200 pixels from an image to be displayed two-dimensionally on an autostereoscopic display device having a resolution of 1600 ⁇ 1200 pixels (arranged in 1600 columns and 1200 lines). The person skilled in the art can thus advantageously select a resolution for the representation which is optimally adapted to the respective environment of use. Since many programs and operating systems are already designed for screens with resolutions of 1600 x 1200 and 800 x 600, it is particularly easy to implement methods that also reduce the line resolution, in particular by the same factor as the column size.
  • S P
  • good, ie for the viewer, acceptable results can also be obtained if 1 ⁇ S ⁇ P is chosen, in particular if: (0.75 x P) ⁇ S ⁇ P.
  • the viewer then does not see the corresponding picture quite as sharply, but advantageously more information can be on the same real one
  • two-dimensional text information for example, is rendered on a virtual screen with a resolution of 800 ⁇ 600 pixels can cause that, since usually each letter or icon is associated with a certain minimum size, the information exceeds the window size and automatically so-called run or scroll bars (usually referred to as scroll bars) are generated on the window pages, with which the user then the window almost to the left / right or up / down to move to get the rest of the information displayed (which usually does not move the window, but the information displayed in the window to the left / right or up / down wander).
  • Such additional operations naturally slow down, for example, the reading of a text.
  • S and K are chosen to be equal to 1, 56, for example, the representation can be given in the example given
  • At least one image area which is to be displayed monoscopically is automatically selected. This makes it possible, for example, to automatically move certain parts of e.g. computer generated screen display, such as the usual so-called "control bar", two-dimensional display on the autostereoscopic display device.
  • a corresponding pointing device such as a mouse, a trackball, a touchpad and / or a touch screen, which can define
  • Priority features are assigned such that when such an element is to be generated, the image area in which the element is to be displayed is displayed monoscopically independent of a manual and / or automatic selection.
  • This allows, for example, certain alarm, error or notification messages, e.g. "low battery status” or "you have received new e-mail" that are typically generated by a program or directly from the high priority operating system over other programs, but are not usually intended for three-dimensional display, two-dimensionally on the autostereoscopic display device play without the user before for a certain area of the
  • the selected image area (s) need not be rectangular, but may rather have any shape.
  • the fact that something has a resolution of M x N pixels should not mean that exactly M x N pixels have to be used for the respective representation. So it is e.g. it is possible that a selected area to be two-dimensionally displayed on the autostereoscopic display device has an L-shape, a circumferential frame shape, or any other shapes.
  • the resolution of M x N image pixels can be provided that certain image enhancement operations, in particular so-called “opening and closing operations" are performed.
  • the arrangement comprising an autostereoscopic display device having M x N matrix-like M-lines and N-column arranged monitor pixels, a plurality of active pixels separating the monitor pixels into P (P e N + 1 P ⁇ 2) fields or passive beam splitter or parallax barriers and a data processing unit coupled to the display device, wherein the data processing generates control signals for controlling the monitor pixels, and wherein the arrangement further comprises means for selecting the image area to be displayed monoscopically, wherein means for producing a representation of the selected Range with a resolution of M / S x N / K image pixels, (S, K e R) are provided, where 1 ⁇ S ⁇ P and 1 ⁇ K ⁇ P and wherein each image pixel on the display device in color or black and white representable (usually m-dimensional as described above) pixel value zugeor dnet, are provided, and further comprising means for transforming the representation to the resolution M x N of the display device and
  • the arrangement can also be easily realized with existing display devices. In this case, it is particularly advantageous to dispense with the replacement of existing hardware, because the means described can also be implemented in software using the usually available hardware.
  • the means for transforming the representation to the resolution M x N of the display device and reading the transformed representation onto the display device can be designed such that in each case two monitor pixels which are connected to the representation of the display selected area are involved and correspond to each other spatially in two related fields, the same pixel values are displayed.
  • the active or passive beam splitters or parallax barriers are arranged vertically next to each other and the monitor pixels of adjacent columns in P (P e N +1 P> 2) separate fields, it is provided that in each case two adjacent monitor pixels, the involved in the representation of the selected area, the same pixel values are displayed.
  • the means for transforming the representation to the resolution M x N of the display device and reading the transformed representation onto the display device also comprise means for Execution of an interpolation, in particular a bilinear or bicubic interpolation include.
  • the means for selecting the image area (s) to be monoscopically displayed may include user-operable pointing devices, such as, in particular, a mouse, a trackball, a touchpad and / or a mouse
  • Touchscreen include.
  • the arrangement may comprise a first frame buffer with a resolution of M x N picture pixels and a second frame buffer with a resolution of M / S x N / K picture pixels. In this case, then means for reading the second
  • Framebuffers be provided in the first frame buffer.
  • Display Apparatus Means for performing image enhancement operations comprise such operations, depending on the type of information in the image area, monoscopic is to be displayed, when creating the representation with the resolution of M / S x N / K image pixels and / or to perform image transformation in the transformation of this representation to the resolution of M x N.
  • the invention also relates to an information reproducing apparatus, such as a particular
  • Navigation system a game console, a PDA (Personal Digital Assistant), a mobile phone or the like.
  • P is an odd number, in particular 3, and that the display device for simultaneously displaying stereoscopic images, in particular navigation information, for a first viewer and monoscopic images, in particular a film or a TV show, designed for a second viewer.
  • the invention also relates to a computer program product, in particular a driver or an operating system, for implementing a method according to the invention.
  • Fig. 1 shows a highly schematic of a possible arrangement for monoscopic display of at least one image area of an image on an autostereoscopic display device.
  • FIG. 2 shows a diagram of a first possible sequence of the method according to the invention.
  • Fig. 1 shows a designated in its entirety by 10
  • Data processing unit e.g. in the form of a commercially available computer coupled via data conduit means 12 to an autostereoscopic display device, indicated generally at 14.
  • the data processing unit 10 in this embodiment comprises a central processor unit 16 and a separate image generation unit 18, e.g. in the form of a graphic card.
  • the data processing unit also has a pointing device 20, e.g. in the form of a mouse, with which a user can mark areas on the display device in which 2D information and areas in which 3D information is to be displayed.
  • a pointing device 20 e.g. in the form of a mouse
  • the graphics card controls the display device 14 via the data line means 12 in such a way that images are stereoscopically reproduced in a specific area 22 of the display device images monoscopically, in another area, in this case the hatched area 24. This can be realized in different ways, as described below with reference to FIGS.
  • FIG. 2 shows a diagram of a possible sequence of the method according to the invention for producing monoscopic images or image regions on a stereoscopic display device.
  • an image-forming unit 40 to be considered here as "black box” for the purpose of this application, in such a way that the image-generating unit can store , in which area or areas (here the non-hatched area) of the screen two-dimensional and which area or areas (here the hatched area) three-dimensional images are to be displayed.
  • Corresponding three-dimensional images may be generated by a 3D application 44 running on a computer, e.g. a CAD program, a game, a program for displaying and evaluating medical image data and the like, and the image generating unit 40 are fed.
  • a 3D application 44 running on a computer, e.g. a CAD program, a game, a program for displaying and evaluating medical image data and the like, and the image generating unit 40 are fed.
  • Two-dimensional images may e.g. from a 2D application 46, e.g. one
  • Word processing program or originate from the operating system of a computer and can e.g. the so-called task bar or even parts of the 3D application 44 itself, e.g. a corresponding control bar with various menus for operating the 3D application, which is to be displayed in two dimensions.
  • the image generation unit 40 discriminates whether incoming image information is to be displayed in the 3D area or the 2D area of the screen.
  • the information falling in the three-dimensional area is written in a frame buffer 48 having a resolution of
  • M x N has pixels corresponding to the resolution of M x N monitor pixels of the display device 14.
  • Display device are suitable. It can then be provided that the image information is subjected to a corresponding processing method for generating autostereoscopic image data, e.g. on the way from the 3D application 44 to the image generation unit 40 a Function CaII tracing, or on the way from the image generation unit 40 to
  • Framebuffer 48 an image warping.
  • the information falling in the 2D area is written in a frame buffer 50, which in this embodiment, in which the display device has simple beam splitters for generating two fields, has a resolution of M / 2 x N / 2 pixels.
  • the frame buffer could also have a higher resolution, eg, a resolution of M / 1, 5625 x N / 1, 5625 pixels.
  • the information stored in the framebuffer 50 in this embodiment is quasi "quadrupled” and read out into a framebuffer 52 having a resolution of M x N pixels, whereby the pixel values in the pixel can simply be traced the coordinates m, n (m, ne N + ) of the frame buffer 50 in the pixels with the coordinates (2m-1, 2n-1) (2m, 2n-1), (2m-1, 2n) and (2m, 2n ) of the frame buffer 52 are written.
  • Pixel values in the pixel with the coordinates (m + 1, n + 1) of the frame buffer 50 would then be converted into the pixels with the coordinates (2m + 1, 2n + 1) (2m + 2, 2n + 1), (2m + 1 , 2n + 2) and (2m + 2, 2n + 2) of the frame buffer 52, etc.
  • Interpolation can be performed to display the image of the M / 1.5625 x N / 1, 5625 resolution on the screen with the M x N resolution.
  • the pixel values from framebuffer 50 are written into four pixels of framebuffer 52.
  • the frame buffers 48 and 52 are then read out into a common frame buffer 54 with the resolution M x N such that the previously defined image areas with 2D information and 3D information.
  • the frame buffer 54 is then finally read out and displayed on the display device 14.
  • a third frame buffer is dispensed with in that the frame buffer 52 is read directly into the frame buffer 48 in such a way that the 3D information contained in the frame buffer 48 is not overwritten.
  • the frame buffer 48 can then be read directly onto the display device 14. It will be appreciated by those skilled in the art that other configurations are possible, e.g. the frame buffer 48 can be read out into the frame buffer 52, which is then read out to the display device 14. It is also conceivable with appropriate computer power to use only two or even only one framebuffer.
  • Developments possible e.g. refer to the selection of image areas to be displayed two-dimensionally.
  • an automatic adjustment of these areas can be provided such that when clicking a menu icon or opening a context menu in a 2D area, the menu pops up and overwrites information in the 3D area with 2D information, so that usually reproduced with two-dimensional font Menu items are displayed clearly legible.
  • the invention can also be used in so-called multi-user displays, where e.g. six fields are generated for three users.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Afin de résoudre le problème de la représentation monoscopique d'au moins un secteur d’une image sur un dispositif d’affichage autostéréoscopique (14) avec une résolution de pixels d’écran (M, N . N+) disposés en matrice de M x N avec M colonnes et N lignes et une pluralité de diviseurs de rayons ou de barrières de parallaxe actifs ou passifs divisant les pixels d'écran en P semi-images (P ∈ N+, P ≥ 2), l’invention concerne un agencement comprenant: une unité (10) de traitement de données couplée au dispositif d’affichage, l’unité de traitement de données produisant des signaux de commande permettant de commander les pixels d’écran, des moyens de sélection du secteur d’image, à afficher de manière monoscopique, des moyens de génération d’une représentation du secteur sélectionné avec une résolution de M/S x N/K pixels, où (S, K ∈ R) et où 1 < S ≤ P et 1 ≤ K ≤ P et où une valeur de pixel pouvant être représentée en couleur ou en noir et blanc sur le dispositif d’affichage est attribuée à chaque pixel, ainsi que des moyens de transformation de la représentation selon la résolution M x N du dispositif d’affichage et de lecture de la représentation transformée sur le dispositif d’affichage.
EP06818073A 2005-11-14 2006-11-14 Procédé et agencement permettant une représentation monoscopique d'au moins un secteur d'une image sur un dispositif d'affichage autostéréoscopique et appareil de reproduction d'informations muni d'un tel agencement Withdrawn EP1964413A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005054599 2005-11-14
DE102006030990A DE102006030990A1 (de) 2005-11-14 2006-07-05 Verfahren und Anordnung zum monoskopischen Darstellen wenigstens eines Bereiches eines Bildes auf einer autostereoskopischen Anzeigevorrichtung
PCT/DE2006/001994 WO2007056986A1 (fr) 2005-11-14 2006-11-14 Procédé et agencement permettant une représentation monoscopique d'au moins un secteur d’une image sur un dispositif d’affichage autostéréoscopique et appareil de reproduction d’informations muni d’un tel agencement

Publications (1)

Publication Number Publication Date
EP1964413A1 true EP1964413A1 (fr) 2008-09-03

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Country Link
US (1) US20080278573A1 (fr)
EP (1) EP1964413A1 (fr)
JP (1) JP2009516205A (fr)
DE (2) DE102006030990A1 (fr)
WO (1) WO2007056986A1 (fr)

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JP2009516205A (ja) 2009-04-16
DE102006030990A1 (de) 2007-05-16
US20080278573A1 (en) 2008-11-13
WO2007056986A1 (fr) 2007-05-24
DE112006003696A5 (de) 2008-10-23

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