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WO2009090599A1 - Procédé de rendu de vue sur un affichage autostéréoscopique et affichage autostéréoscopique - Google Patents

Procédé de rendu de vue sur un affichage autostéréoscopique et affichage autostéréoscopique Download PDF

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Publication number
WO2009090599A1
WO2009090599A1 PCT/IB2009/050118 IB2009050118W WO2009090599A1 WO 2009090599 A1 WO2009090599 A1 WO 2009090599A1 IB 2009050118 W IB2009050118 W IB 2009050118W WO 2009090599 A1 WO2009090599 A1 WO 2009090599A1
Authority
WO
WIPO (PCT)
Prior art keywords
view
autostereoscopic display
display
cones
cone
Prior art date
Application number
PCT/IB2009/050118
Other languages
English (en)
Inventor
Waltherus A. H. Roelen
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2009090599A1 publication Critical patent/WO2009090599A1/fr

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
    • H04N13/302—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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G02B30/29—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays characterised by the geometry of the lenticular array, e.g. slanted arrays, irregular arrays or arrays of varying shape or size
    • 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
    • H04N13/317—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using slanted parallax optics
    • 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
    • H04N13/349—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking
    • H04N13/351—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for displaying simultaneously
    • 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
    • H04N13/398—Synchronisation thereof; Control thereof

Definitions

  • the present invention relates to a method for view rendering on an autostereoscopic display and an autostereoscopic display.
  • Autostereoscopic displays suitable for rendering three-dimensional (3D) imagery.
  • Autostereoscopic devices can present viewers with a 3D impression without the need for special headgear and/or glasses.
  • Autostereoscopic displays generally provide different views for different viewing angles. In this manner a first image can be generated for the left eye and a second image for the right eye of a viewer.
  • a variety of techniques are used to generate images for autostereoscopic displays. For example multi-view images can be recorded using multiple cameras wherein the position of the respective camera corresponds with the respective viewpoint of each respective view.
  • US patent 6064424 discloses and autostereoscopic display that use a film of slanted lenticular elements positioned on the display.
  • Varrier paper discloses a display system that requires head tracking and which involves a complex registration scheme for registration of physical and computational parameters of the system.
  • the view assignment for subpixels of the display is adapted such that at least two view cones of different order, the respective view cones originating from two horizontally separated spatial regions on the display, match in a particular region in front of the autostereoscopic display, such that at a location within the region in front of the autostereoscopic display, the first of the two view cones contributes a first color component for a particular view, and the second view cone contributes a second color component for the particular view, and the view assignment in the spatial regions contributing to the first cone and the second cone differs.
  • the present invention can through different assignments of views for different spatial regions providing viewing cones create sweet-spots in front of the autostereoscopic display such that multiple viewers within one or more sweet-spots of the display can perceive different images with their left eye and different images with their right eye resulting in a 3D impression.
  • the first cone can contribute a color component to a pixel at a certain position in front of the display, and a second cone can contribute a further color component for the pixel at the same position in front of the display.
  • the above is particularly useful for wide autostereoscopic display, wherein the display covers a large part of the field of view of a user.
  • several horizontally spaced apart cones can contribute one (or optionally more) color components to a particular location in front of the screen. Due to the wide nature of the screen compared to the viewer distance to the screen, this principle can be exploited to provide a sound 3D impression in a region at a particular distance to the screen.
  • a screen is considered wide if the autostereoscopic display covers a viewing angle of an observer that is more than 60 degrees.
  • the present invention can be implemented for a single wide-viewing angle autostereoscopic display, or may alternatively be implemented for an array comprising at least two horizontally adjacent autostereoscopic displays, but preferably comprise at least three horizontally adjacent autostereoscopic displays.
  • Fig. 1 shows a lenticular lens array in front of a (sub)pixel based display
  • Fig. 2 shows an example of subpixel assignment for an eight view 3D display
  • Fig. 3 shows an example of a simulation of how subpixels assigned to view 2 are visible through an optical system
  • Fig. 4 shows the application of the invention in a planar setup of multiple multi-view based autostereoscopic displays
  • Fig. 5 shows a top view of a multi-view display system according to the present invention wherein viewing cones originating from the respective displays are shown
  • Fig. 6 shows a perspective view of a multi-view display system according to the present invention
  • Fig. 7 shows an application of the invention on a single wide autostereoscopic display
  • Fig. 8 shows the application of the invention in a non-planar setup of multiple multi-view based 3D displays
  • Fig. 9 shows the optimal viewing area and optimal viewing distance line.
  • FIG. 1 shows a lenticular lens array in front of a (sub)pixel based display to form an autostereoscopic display device.
  • Arrays of lenticular lenses can be used to direct the light from (sub)pixels in discrete directions.
  • Autostereoscopic display devices as disclosed in US patent 6064424 which may use a film of slanted lenticular elements positioned on the display.
  • the lenticular film effectively directs light originating from (sub)pixels of a display panel into a variety of directions; thus providing a so-called viewing cone.
  • the subpixels as indicated by 105 are separated from the lenticules 110.
  • multiple viewing cones may be observed, wherein subpixels from different regions behind the lenticular contribute to a cone.
  • the lenticular-based optical system in combination with the weaved pixel- layout provides a display panel where from each area on the display-screen a number (here nine) views is emitted in discrete directions. A set of views (here nine) is called a viewing cone. These cones are horizontally repeated.
  • the optical system is designed in such way that cones from different areas on the screen coincide at the optimal viewing distance. A viewer at (approx.) the correct distance sees a pair of views and thus has may obtain an (auto- ) stereoscopic impression.
  • Figure 2 shows an example of subpixel view assignment for an eight view 3D display, this particular view assignment is intended for use with an autostereoscopic display device having a slanted lenticular film.
  • the lenticular film is overlaid over the views and subsequently the lenticular film directs the light from the subpixels is various directions.
  • Figure 3 shows an example of a simulation of how subpixels assigned to a particular view 2 are visible through an optical system comprising a lenticular.
  • multi-view displays have discrete viewing cones with a set of views forming subsequent stereoscopic pairs a combination of the position and angle of the viewer in respect to the display presents the viewer a different 3D perception (perspective).
  • the viewer has a different orientation and position in respect to every screen and thus sees different perspectives on each display not resulting in one consistent 3D perception.
  • the present invention proposes to create one multi-view perception from multiple screens the viewing cones and the corresponding views have to be matched.
  • Figure 4 shows how a primary viewing cone comprising 9 views originates from a first display device 405 and may be perceived by the viewer 410.
  • the lenticule positioned in front of the viewer 410 also provides two secondary cones, adjacent to the left and right of the primary cone.
  • a tertiary viewing cone is provided to the immediate left of the left secondary cone and to the immediate right of the right secondary cone.
  • Figure 4 further illustrates how the primary viewing cone of the first display device 405 is made to overlap with the tertiary viewing cone of the second, adjacent, display device 405'.
  • This overlap as indicated in Figure 4 is obtained by a proper choice of view assignment for the second display device 405'.
  • This alignment effectively is obtained by assigning views for the tertiary cone of the second display device to match with the primary cone of the primary device.
  • Figure 5 shows a top-view of a graphic rendition of a 3 dimensional scene wherein views from the respective displays are weaved.
  • the secondary viewing cone 520 of the primary display 505 is assigned views that match those of the secondary viewing cone of a further display 515.
  • Figure 6 shows a perspective view of the graphic rendition of the three dimensional scene from Figure 5, wherein the viewing cones are rendered and it is illustrated how the respective views of the respective cones overlap at the location where the viewers are positioned.
  • Figure 7 shows an application of the invention on a single wide autostereoscopic display.
  • the lenticular-based optical system in combination with the weaved pixel- layout provides a display panel where from each area on the display-screen a number (e.g. nine) views are emitted in discrete directions. A set of views (in this case nine) is called a viewing cone. These cones are horizontally repeated.
  • the optical system is designed in such way that cones from different areas on the screen coincide at the optimal viewing distance. A viewer at (approx.) the correct distance sees a pair of views and thus may obtain a (auto-) stereoscopic perception.
  • the figure illustrates that by matching the higher order (here tertiary order) viewing cone with the primary viewing cone, the viewer of the primary viewing cone may also obtain a three-dimensional impression based on the subpixels in the spatial region providing the tertiary order cone.
  • Figure 8 shows how the present invention may also be used to weave non- planar views. Due to the fact that the views in the respective cones are narrow compared to the distance to the screen, the effect of the changed angle of the autostereoscopic display with respect to the viewer in Fig. 8 is limited.
  • Figure 9 shows the optimal viewing area and optimal viewing distance line.
  • a combination of multiple 3D displays (multi-view) a larger display area can be achieved resulting in a more immersive perception of the displayed scenery.
  • the combination of multiple displays further results in a higher overall resolution of the 3D images displayed.
  • the directions of the viewing cones of the different displays are matched by changing the rendering. In this way one can also direct the viewing cones of all displays to have optimal 3D perception in specific positions in respect to the set of 3D displays.
  • the present invention may be used in conjunction with an autostereoscopic display for use in displaying still images or for use in displaying video sequences. It should be noted that once a proper view assignment is available the actual rendering of still and video images as such does not differ. It will be clear to the skilled person that an image processing device in accordance with the present invention can be constructed using either hardware components in the form of e.g. an Application Specific Integrated Circuit (ASIC) or multiple ASICs, or using a programmable platform comprising one or more digital signal processors or even general purpose processors.
  • ASIC Application Specific Integrated Circuit

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • General Physics & Mathematics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

Cette invention se rapporte à un procédé de rendu d'une vue sur un affichage autostéréoscopique, et à un affichage autostéréoscopique. Une attribution de vue des sous-pixels de l'affichage est adaptée de telle sorte que pour au moins deux cônes de vue d'ordre différent, les cônes de vue respectifs provenant de deux dispositifs séparés de manière horizontale, les cônes de vue se chevauchent dans une région particulière à l'avant l'affichage autostéréoscopique, de telle sorte qu'à un emplacement situé à l'intérieur de la région, le premier des deux cônes de vue contribue à une première composante de couleur pour une vue particulière, et le deuxième cône de vue contribue à une deuxième composante de couleur pour la vue particulière, des vues différentes étant attribuées à l'intérieur des régions spatiales associées au premier cône et au deuxième cône.
PCT/IB2009/050118 2008-01-15 2009-01-13 Procédé de rendu de vue sur un affichage autostéréoscopique et affichage autostéréoscopique WO2009090599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08150262 2008-01-15
EP08150262.7 2008-01-15

Publications (1)

Publication Number Publication Date
WO2009090599A1 true WO2009090599A1 (fr) 2009-07-23

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WO (1) WO2009090599A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI462568B (zh) * 2010-10-29 2014-11-21 Au Optronics Corp 立體顯示器之影像顯示方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020095843A1 (en) * 2001-01-24 2002-07-25 Marc Edmunds Display device
US20030107804A1 (en) * 2001-11-08 2003-06-12 Eugene Dolgoff Tiling of panels for multiple-image displays
FR2876804A1 (fr) * 2004-10-18 2006-04-21 Imagine Optic Sa Dispositif et procede de visualisation autostereoscopique a base de lenticulaire, et procede de synthese d'images autostereoscopiques associe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020095843A1 (en) * 2001-01-24 2002-07-25 Marc Edmunds Display device
US20030107804A1 (en) * 2001-11-08 2003-06-12 Eugene Dolgoff Tiling of panels for multiple-image displays
FR2876804A1 (fr) * 2004-10-18 2006-04-21 Imagine Optic Sa Dispositif et procede de visualisation autostereoscopique a base de lenticulaire, et procede de synthese d'images autostereoscopiques associe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BORCSOK J ET AL: "Autostereoscopic adaptive 3D multi-screen system", INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS. 2001 DIGEST OF TECHNICAL PAPERS. ICCE. LOS ANGELES, CA, JUNE 19 - 21, 2001; [INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS], NEW YORK, NY : IEEE, US, 19 June 2001 (2001-06-19), pages 192 - 193, XP010552127, ISBN: 978-0-7803-6622-0 *

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TW200951490A (en) 2009-12-16

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