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WO1998033331A1 - Procede et appareil de production d'images stereoscopiques - Google Patents

Procede et appareil de production d'images stereoscopiques Download PDF

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Publication number
WO1998033331A1
WO1998033331A1 PCT/AU1998/000028 AU9800028W WO9833331A1 WO 1998033331 A1 WO1998033331 A1 WO 1998033331A1 AU 9800028 W AU9800028 W AU 9800028W WO 9833331 A1 WO9833331 A1 WO 9833331A1
Authority
WO
WIPO (PCT)
Prior art keywords
spectral component
spectral
image
component
perspective
Prior art date
Application number
PCT/AU1998/000028
Other languages
English (en)
Inventor
Philip Victor Harman
Original Assignee
Dynamic Digital Depth Research Pty Ltd
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 Dynamic Digital Depth Research Pty Ltd filed Critical Dynamic Digital Depth Research Pty Ltd
Priority to JP53142098A priority Critical patent/JP2001508617A/ja
Priority to EP98900481A priority patent/EP0954930A4/fr
Priority to CA002278336A priority patent/CA2278336A1/fr
Priority to AU55441/98A priority patent/AU727573B2/en
Publication of WO1998033331A1 publication Critical patent/WO1998033331A1/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
    • H04N13/398—Synchronisation thereof; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • 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
    • H04N13/139—Format conversion, e.g. of frame-rate 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
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/15—Processing image signals for colour aspects of 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
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
    • 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
    • H04N13/167—Synchronising or controlling 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
    • H04N13/30—Image reproducers
    • H04N13/324—Colour aspects
    • 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]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/189—Recording image signals; Reproducing recorded 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
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/194—Transmission of 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
    • H04N13/261—Image signal generators with monoscopic-to-stereoscopic image conversion
    • 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
    • H04N13/286—Image signal generators having separate monoscopic and stereoscopic modes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N2013/0074—Stereoscopic image analysis
    • H04N2013/0077—Colour aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N2013/0074—Stereoscopic image analysis
    • H04N2013/0085—Motion estimation from stereoscopic image signals

Definitions

  • the present invention relates to a method and apparatus for producing stereoscopic images, in particular a method of displaying stereoscopic images on a standard TV or Computer monitor without apparent flicker.
  • a method of displaying stereoscopic images on a standard TV or Computer monitor without apparent flicker In order to view the stereoscopic images the viewer wears a pair of glasses that substantially enable the full colour spectrum to be seen by each eye.
  • BACKGROUND OF THE INVENTION In order for a viewer to see stereoscopic images it is necessary for the viewers eyes to view the subject matter from a slightly different perspective such that each eye sees a different view of the image.
  • Several methods are currently used to display stereoscopic images on a TV or Computer monitor.
  • the anaglyph system as practiced in the current art, depends upon the use of complementary colour filters placed in front of each eye.
  • a red transmitting filter may be used for the left eye, and a blue and green (cyan) transmitting filter used for the right eye.
  • a blue and green (cyan) transmitting filter used for the right eye.
  • a current technique is to produce on a TV or Computer monitor full colour images of the left and right perspective's alternately.
  • the screen is viewed through spectacles which permit each eye to receive only the image of the appropriate perspective.
  • the spectacles typically consist of Liquid Crystal elements that alternately "shutter" each eye, hence the generic term shutter glasses.
  • the problem with this system is that when used at the standard field rate of 50Hz for PAL and 60Hz for NTSC television images, substantial flicker is produced because the image received by each eye alternates with periods of darkness. In order for this system to be acceptable to a viewer the image needs to be electronically processed to double the frame rate to a minimum of 100Hz. At this speed the flicker is not noticeable. However, the video image is now no longer produced at a standard speed and can not be displayed on a normal TV or Computer monitor.
  • An object of the invention is to provide a method and apparatus for producing a stereoscopic image in which the viewer is provided with a image which may include a substantially full range of colour information for each eye substantially without flicker, and preferably when viewed on a standard, unmodified, PAL or NTSC TV or Computer monitor. Another object of the invention is to provide such an apparatus which may be produced in a fully electronic form rather than the electromechanical configurations of the prior art. Another object of the invention is to provide such an apparatus at relatively low cost.
  • the present invention provides: a method for displaying a stereoscopic image on a display apparatus having a predefined field frequency wherein: a first perspective of an image to be viewed by a viewers left eye is passed through a first filter having a first spectral component of a colour spectrum; a second perspective of an image to be viewed by a viewers right eye is passed through a second filter having a second spectral component of a colour spectrum; and said first and second spectral components are caused to alternate at a rate equal to an odd multiple of the field frequency of the display apparatus.
  • the present invention utilises first and second spectral components that are complementary to each other. That is, a combination of the first and second spectral components would produce white light.
  • the first spectral component may be red
  • the second spectral component cyan or a combination of blue and green.
  • the present invention will be further discussed with reference to this red and cyan combination, however, any colour and its complement could also be used. For example, blue and yellow, or alternatively green and magenta, may also be used.
  • Figure 2 shows the progressive switching over two fields.
  • Figure 3 shows the relationship between the driving voltage and colour transmission of a Chiral Smectic (CS) LCD Cell.
  • CS Chiral Smectic
  • Figure 4 shows a practical implementation of a stereoscopic viewing system using CS LCD Cells constructed as spectacles.
  • Figure 5 shows the stereoscopic video format required to drive a decoder of the present invention.
  • Figure 6 shows a possible configuration to enable a CS LCD cell to be driven at odd multiples of the field frequency.
  • Figure 7 shows a possible decoder for use with the present invention.
  • Figure 8a shows a possible switching means, in this case a multiplexer configured to transmit the red complement of the image to the left eye, and the cyan complement of the image to the right eye.
  • Figure 8b shows the next instance following Figure 8a, wherein the multiplexer is configured to transmit the cyan complement of the image to the left eye, and the red complement of the image to the right eye.
  • Figure 9a shows a typical frequency spectra of two complementary spectral components.
  • Figure 9b shows a graph of a notch filter to address the cross talk of two complementary spectral components.
  • Figure 9c shows a resultant frequency spectra of two complementary spectral components after application of a notch filter.
  • the present invention could be combined with 2D to 3D conversion systems, it is primarily directed towards a system for receiving a 2D signal together with 3D data, whereby the 3D data enables a decoder to convert the 2D signal into respective left and right eye images for stereoscopic viewing by a viewer.
  • FIG. 7 An example block diagram of a decoder in accordance with the present invention suitable for converting conventional analogue field sequential 3D, into a format suitable for use with colour sequential glasses is shown in Figure 7.
  • the operation of this decoder is as follows:
  • Incoming video which may be in composite or S-Video format is converted into 24bit RGB format using a video Analogue to Digital converter. Alternate fields are stored in two 256k x 24bit field stores such that field store 1 contains odd fields and field store 2 contains even fields.
  • the 24bit RGB outputs from each field store are selected by a triple 8bit multiplexer that, assuming Red/Cyan encoding has been used, selects the outputs as shown in Figure 8. That is, at one instance the red component of an image is directed towards the left eye, whilst the cyan component of the image is directed towards the right eye, as can be seen in Figure 8a.
  • the multiplexer switches such that the cyan component is fed to the left eye and the red component to the right eye, as can be seen in Figure 8b.
  • the output from the multiplexer is fed into a video Digital to Analogue encoder, the resultant composite or S-Video output being displayed on a standard Television or computer monitor.
  • a decoder for example a 16bit YUV with a colour space conversion into and out of the triple 8bit multiplexer could also be used.
  • the timing generator can operate to switch the multiplexer at an odd multiple of the field rate, thereby enabling both eyes of the viewer to receive a substantially full colour spectrum and the image in 3D. That is, each eye views two spectral components of each field.
  • the choice and type of decoder is not important. What is required is that the decoder be able to receive and process the 2D image and 3D data, spectrally filter both the left and right eye images with two distinct spectral components, whilst effectively switching the spectral components at an odd multiple of the field frequency, such that the alternate filtering of both spectral components results in a substantially full colour stereoscopic image.
  • phase A the red component of the left perspective view is presented to the left eye and the cyan component of the right perspective view to the right eye.
  • phase B the cyan component of the left perspective view is presented to the left eye and the red component of the right perspective view to the right eye.
  • phase C the red component of the left perspective view is presented to the left eye and the cyan component of the right perspective view to the right eye.
  • the three phases of the second video field are indicated in figure 2.
  • Electro-optic switchable colour filters come in two basic varieties: birefringent colour filters and dichroic colour filters. Both types operate by linearly polarising light in a particular way that then allows the electro-optic means to manipulate those polarisations and transmit one colour at a time. The polarisation manipulation required entails either rotating the polarisation direction by 90° or leaving the direction unchanged. Both birefringent and dichroic filters were originally constructed with Kerr cells or Faraday rotators to control the polarisation, but today liquid crystal retarders provide the electro-optic function more conveniently.
  • CS Chiral Smectic
  • CS devices are switchable half-wave plates with a rotation angle of 45°. They are binary devices capable of switching between two orthogonal polarisation states. For an application of the present invention they may be constructed to switch between either red or cyan transmission. Transition times, between red and cyan, are small compared with the field flyback period of PAL and NTSC television standards.
  • the cells are typically driven with bipolar +/- 5V DC balanced waveforms as illustrated in figure 3.
  • transition CS LCD cells become available it is possible to reduce the visibility of the transitions to the viewer by changing the video line number that the cell switches from red to cyan or cyan to red on each field.
  • the line number, and hence the physical position on the TV or Computer monitor screen the colour transition will not be so noticeable to the viewer. That is, assuming that switching of the cell from one spectral component to the other spectral component for each frame would normally take place on line x. Then to reduce the transition effect, the line on which switching occurs for each frame can be varied to take place on one or more adjacent lines, for example lines x, x+1 , x+2, ...x+n, may be used. Ideally, 5 to 10 different video lines can be used to switch the cell and thereby reduce the effect of the transitions.
  • the video line numbers that the transitions take place on every field can be varied in a fixed sequence or on a pseudo random basis.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention concerne un appareil permettant de produire des images stéréoscopiques, l'appareil ayant une fréquence de champs prédéfinie pour l'affichage de l'image et comprenant un premier filtre pour le passage d'une première perspective d'une image avec un premier composant spectral du spectre des couleurs, un second filtre pour faire passer une seconde perspective de l'image avec un second composant spectral du spectre des couleurs et un organe d'alternance pour faire alterner les premier et second composants spectraux, l'organe d'alternance fonctionnant à une vitesse égale à un multiple impair de la fréquence des champs de l'appareil produisant les images.
PCT/AU1998/000028 1997-01-22 1998-01-21 Procede et appareil de production d'images stereoscopiques WO1998033331A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP53142098A JP2001508617A (ja) 1997-01-22 1998-01-21 立体画像を作る方法および装置
EP98900481A EP0954930A4 (fr) 1997-01-22 1998-01-21 Procede et appareil de production d'images stereoscopiques
CA002278336A CA2278336A1 (fr) 1997-01-22 1998-01-21 Procede et appareil de production d'images stereoscopiques
AU55441/98A AU727573B2 (en) 1997-01-22 1998-01-21 Method and apparatus for producing stereoscopic images

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPO4777 1997-01-22
AUPO4777A AUPO477797A0 (en) 1997-01-22 1997-01-22 Method and apparatus for producing stereoscopic images

Publications (1)

Publication Number Publication Date
WO1998033331A1 true WO1998033331A1 (fr) 1998-07-30

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PCT/AU1998/000028 WO1998033331A1 (fr) 1997-01-22 1998-01-21 Procede et appareil de production d'images stereoscopiques

Country Status (7)

Country Link
EP (1) EP0954930A4 (fr)
JP (1) JP2001508617A (fr)
KR (1) KR20000070355A (fr)
CN (1) CN1244327A (fr)
AU (1) AUPO477797A0 (fr)
CA (1) CA2278336A1 (fr)
WO (1) WO1998033331A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100374784B1 (ko) * 2000-07-19 2003-03-04 학교법인 포항공과대학교 실시간 입체 영상 정합 시스템
FR2859857A1 (fr) * 2003-09-17 2005-03-18 Thomson Licensing Sa Procedes de traitement et d'affichage d'images et appareil d 'affichage utilisant les procedes
WO2005039192A1 (fr) * 2003-10-21 2005-04-28 Barco N.V. Procede et dispositif de mise en oeuvre d'affichage d'image stereoscopique base sur des filtres selectifs de couleurs
WO2005099279A1 (fr) * 2004-04-01 2005-10-20 Hewlett-Packard Development Company, L.P. Procede et systeme d'affichage d'une image en trois dimensions
WO2009045451A1 (fr) * 2007-10-01 2009-04-09 Doubleshot, Inc. Affichage anaglyphe en trois dimensions en couleurs
US8928745B2 (en) 2009-02-13 2015-01-06 3M Innovative Properties Company Stereoscopic 3D display device
US9507167B2 (en) 2007-10-01 2016-11-29 Doubleshot, Inc. Methods and systems for full-color three-dimensional image display

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Publication number Priority date Publication date Assignee Title
JP2004309868A (ja) * 2003-04-08 2004-11-04 Sony Corp 撮像装置及び立体映像生成装置
JP2012159776A (ja) * 2011-02-02 2012-08-23 Univ Of Tsukuba 立体画像表示装置
CN102638701A (zh) * 2011-02-15 2012-08-15 瑞昱半导体股份有限公司 显示器、影像处理装置以及影像处理方法
CN102158722A (zh) * 2011-04-08 2011-08-17 清华大学 立体视频的红青渲染方法及装置
CN114125463B (zh) * 2021-11-14 2024-04-26 山东云海国创云计算装备产业创新中心有限公司 一种视频压缩的方法、系统、存储介质及设备

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EP0135340A1 (fr) * 1983-08-12 1985-03-27 Brightad Limited Procédé et installation de reproduction d'images stéréoscopiques
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WO1997043681A1 (fr) * 1996-05-15 1997-11-20 Vrex, Inc. Equipement de visualisation stereoscopique en trois dimensions a verres de vue electro-optiques

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EP0135340A1 (fr) * 1983-08-12 1985-03-27 Brightad Limited Procédé et installation de reproduction d'images stéréoscopiques
FR2623680A1 (fr) * 1987-11-19 1989-05-26 Cahen Olivier Processeur de presentation stereoscopique d'images video
WO1992011735A1 (fr) * 1990-12-21 1992-07-09 Delta Systems Design Limited Systemes de mise en image stereoscopique
GB2255251A (en) * 1991-03-21 1992-10-28 Jacob Ezra Colour anaglyph 3d television with field rate doubling
US5260773A (en) * 1991-10-04 1993-11-09 Matsushita Electric Corporation Of America Color alternating 3-dimensional TV system
EP0541374A1 (fr) * 1991-11-05 1993-05-12 Sharp Kabushiki Kaisha Système display à trois dimensions
WO1994016353A1 (fr) * 1992-12-31 1994-07-21 Honeywell Inc. Affichage stereoscopique multicolore avec multiplexage en couleurs
WO1995015661A1 (fr) * 1993-12-01 1995-06-08 Medi-Vision Technologies, Inc. Procede et systeme d'imagerie stereoscopique synthetisee
WO1997043681A1 (fr) * 1996-05-15 1997-11-20 Vrex, Inc. Equipement de visualisation stereoscopique en trois dimensions a verres de vue electro-optiques

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100374784B1 (ko) * 2000-07-19 2003-03-04 학교법인 포항공과대학교 실시간 입체 영상 정합 시스템
US7899242B2 (en) 2003-09-17 2011-03-01 Thomson Licensing Methods of processing and displaying images and display device using the methods
FR2859857A1 (fr) * 2003-09-17 2005-03-18 Thomson Licensing Sa Procedes de traitement et d'affichage d'images et appareil d 'affichage utilisant les procedes
WO2005027529A1 (fr) * 2003-09-17 2005-03-24 Thomson Licensing Procedes de traitement et d'affichage d'images et dispositif de visualisation faisant appel auxdits procedes
KR101036004B1 (ko) * 2003-09-17 2011-05-23 톰슨 라이센싱 이미지를 처리하고 디스플레이하는 방법 및 이 방법을 이용한 디스플레이 디바이스
WO2005039192A1 (fr) * 2003-10-21 2005-04-28 Barco N.V. Procede et dispositif de mise en oeuvre d'affichage d'image stereoscopique base sur des filtres selectifs de couleurs
EP1830584A1 (fr) * 2003-10-21 2007-09-05 Barco N.V. Procédé et dispositif pour effectuer un affichage d'image stéréoscopique basé sur des filtres de sélection de couleur
EP1830585A3 (fr) * 2003-10-21 2007-11-21 Barco N.V. Procédé et dispositif pour effectuer un affichage d'image stéréoscopique basé sur des filtres de sélection de couleur
US7832869B2 (en) 2003-10-21 2010-11-16 Barco N.V. Method and device for performing stereoscopic image display based on color selective filters
WO2005099279A1 (fr) * 2004-04-01 2005-10-20 Hewlett-Packard Development Company, L.P. Procede et systeme d'affichage d'une image en trois dimensions
US8384773B2 (en) 2004-04-01 2013-02-26 Hewlett-Packard Development Company, L.P. Method and system for displaying an image in three dimensions
WO2009045451A1 (fr) * 2007-10-01 2009-04-09 Doubleshot, Inc. Affichage anaglyphe en trois dimensions en couleurs
US8169445B2 (en) 2007-10-01 2012-05-01 Doubleshot, Inc. Methods and systems for full-color three-dimensional image display
US8704845B2 (en) 2007-10-01 2014-04-22 Doubleshot, Inc. Methods and systems for full-color three-dimensional image display
US9507167B2 (en) 2007-10-01 2016-11-29 Doubleshot, Inc. Methods and systems for full-color three-dimensional image display
US8928745B2 (en) 2009-02-13 2015-01-06 3M Innovative Properties Company Stereoscopic 3D display device

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Publication number Publication date
CA2278336A1 (fr) 1998-07-30
JP2001508617A (ja) 2001-06-26
CN1244327A (zh) 2000-02-09
EP0954930A1 (fr) 1999-11-10
KR20000070355A (ko) 2000-11-25
EP0954930A4 (fr) 2003-05-02
AUPO477797A0 (en) 1997-02-20

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