WO2012144836A2 - Dispositif d'enregistrement et d'affichage d'image en trois dimensions - Google Patents

Dispositif d'enregistrement et d'affichage d'image en trois dimensions Download PDF

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Publication number
WO2012144836A2
WO2012144836A2 PCT/KR2012/003027 KR2012003027W WO2012144836A2 WO 2012144836 A2 WO2012144836 A2 WO 2012144836A2 KR 2012003027 W KR2012003027 W KR 2012003027W WO 2012144836 A2 WO2012144836 A2 WO 2012144836A2
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WIPO (PCT)
Prior art keywords
light
image
angle
modulator
adjusting
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PCT/KR2012/003027
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English (en)
Korean (ko)
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WO2012144836A3 (fr
Inventor
강훈종
정광모
서경학
최광순
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전자부품연구원
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Publication of WO2012144836A2 publication Critical patent/WO2012144836A2/fr
Publication of WO2012144836A3 publication Critical patent/WO2012144836A3/fr

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    • 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
    • G03B35/24—Stereoscopic photography by simultaneous viewing using apertured or refractive resolving means on screens or between screen and eye
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
    • 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
    • H04N13/307—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using fly-eye lenses, e.g. arrangements of circular lenses

Definitions

  • the present invention relates to an apparatus for displaying a 3D stereoscopic image using a microlens array, and more particularly, to an apparatus for displaying and controlling the position of elementary images constituting a 3D stereoscopic image displayed on a transmissive screen. .
  • Three-dimensional image realization technology that allows you to feel three-dimensional depth and three-dimensional feeling from a planar image is widely applied to the aerospace, arts, and automotive industries, as well as the home appliances and telecommunications industries, as well as the direct related fields such as displays.
  • the technical ripple effect is expected to be more than the current HDTV.
  • volumetric volumetric type
  • holographic type three-dimensional representation
  • stereoscopic type stereoscopic type
  • the volume expression method is a way to feel the perspective of the depth direction due to psychological factors and inhalation effects.
  • the viewing angle is calculated by a 3D computer graphic or an observer who displays perspective, superposition, shadow, contrast, and movement by calculation. It is applied to so-called IMAX movies, which provide a large large screen and cause optical illusions to be sucked into the space.
  • the three-dimensional representation method known as the most complete stereoscopic image implementation technology can be represented by laser light reproduction holography to white light reproduction holography.
  • the stereoscopic expression method is to sense a three-dimensional feeling using physiological factors of both eyes, and in particular, a process in which the brain fuses them when a plane-related image including parallax information is visible in the left and right sides of a human being about 65 mm apart.
  • This stereoscopic expression method is called a multi-eye display method, and the spectacle method using the special glasses on the observer's side or the parallax barrier, lenticular or integral on the display surface depending on the actual stereoscopic generating position. It can be divided into a glasses-free method using a lens array of the back.
  • the integrated image method which is one of the volume expression methods, recognizes a virtual three-dimensional stereoscopic image even without an actual three-dimensional object by reproducing an optical characteristic identical to the distribution and luminance of light emitted from the actual three-dimensional object.
  • a microlens array is placed in front of a film of a camera to capture various images through the lens.
  • the basic principle is that if there is a point light source in the space through the microlens array through the backlight from the film back.
  • FIG. 1 is a side cross-sectional view of a conventional integrated image type 3D image photographing apparatus
  • FIG. 2 is a side cross-sectional view of a conventional integrated image type 3D image display apparatus.
  • a conventional integrated image type 3D image photographing apparatus includes a photographing lens array 110 and a photographing panel 120.
  • the photographing lens array 110 includes a plurality of convex lenses arranged in a matrix form, and the photographing panel 120 uses a photographic film in the case of a still image, and a charge-coupled device (CCD) in the case of a video.
  • CCD charge-coupled device
  • the object 100 When the object 100 is disposed in front of the photographing lens array 110 of the integrated image type 3D image photographing apparatus, the object 100 emits a plurality of light rays 100a to the photographing lens array 110 and a plurality of objects.
  • the light ray 100a is collected by the lens array 110 for photographing and recorded in each pixel of the photographing panel 120.
  • the integrated image method 3D image photographing apparatus 130 may use the object 100. This results in image data viewed from various directions in space.
  • Such image data is displayed on the integrated image type 3D image display device of FIG. 2 and synthesized by a user to realize a 3D image.
  • the integrated image type 3D image display device 230 includes a display panel 220 and a display lens array 210.
  • a display panel 220 a picture is used for a still image, and a flat display panel (FDP) is used for a video, and a plurality of pixels (not shown) are defined.
  • the display lens array 210 includes a plurality of convex lenses arranged in a matrix form in the same manner as the photographing lens array.
  • the display panel 220 displays image data recorded in the integrated image type 3D image photographing apparatus (130 of FIG. 1), so that each pixel of the display panel 220 corresponds to the object 200 viewed from various directions.
  • the image is displayed, and light rays emitted from the plurality of pixels are collected by the convex lens of the display lens array 210.
  • the light rays 200a generated by the convex lens form a plurality of voxels (volume pixels) in space, and the partial images displayed on the plurality of voxels are integrated at one point and the object at a specific position in space. To form an image 200 corresponding to.
  • the user feels as if he / she sees an actual object while viewing the image 200 in the space, and the integrated image type 3D image display device 230 displays the same 3D image 200 as the actual object.
  • the element images 320 for a single point are displayed by the image display device (transmissive screen) 300, and the microlens array 310 accurately converges to the single point. Done. This convergence to a single point accurately produces a clear reconstructed image.
  • the light coming from the element images does not always converge exactly to a single location. The reason is that the position of the pixel is not in the correct position. Such image blurring causes image quality deterioration.
  • an element image of a point to be displayed in a space must be located at an accurate position on the image display device.
  • an accurate optical path is created by the lens, and image quality deterioration can be reduced.
  • a fine adjustment of the pixel position or an image display apparatus having high spatial resolution is required so that the pixel position is moved to the correct position. Therefore, in order to accurately position the element image, the pixel spacing of the imaging device must be small, and the screen size must be enlarged in order to increase the 3D effect, and thus the overall resolution must be increased.
  • current industrial technologies have limitations in satisfying the requirements of integrated video display devices.
  • An object of the present invention is to propose a method for displaying a high resolution 3D stereoscopic image in an integrated image method for displaying a 3D stereoscopic image using a microlens array.
  • Another object of the present invention is to propose a method of displaying high-quality three-dimensional (3D) images by controlling pixel positions in an integrated image method for displaying a three-dimensional (3D) image using a microlens array.
  • Another object of the present invention is to propose a method of converging an integrated image at a precise position in space by a micro lens in an integrated image method of displaying a 3D stereoscopic image using a micro lens array.
  • the three-dimensional image display device of the present invention is a transmission screen for displaying an integrated image, a light source for emitting the beam converted the integrated image, the deviation time of the beam emitted from the light source in accordance with the received signal output delay deviation information It includes a light modulator for adjusting and exiting.
  • the three-dimensional image display method of the present invention comprises the steps of: emitting a beam converted from the integrated image, controlling the deviation time of the beam emitted from the light source according to the received signal output delay deviation information, and emitting the deviation time Displaying the emitted beam to be adjusted on a transmissive screen.
  • the three-dimensional image recording apparatus of the present invention is a micro-lens array, a transmissive screen including a plurality of pixels for recording the beam passing through the micro lens array, extracting the output delay deviation information of the beam recorded on the transmissive screen And a deviation information extraction unit.
  • a three-dimensional image display device a light source; An optical modulator for adjusting an amplitude and an angle of the light emitted from the light source; A scanning unit which emits the light emitted from the light modulator while performing two-dimensional scanning; A screen displaying an integrated image by the light emitted from the scanning unit; And a lens array configured to display the integrated image displayed on the screen in space.
  • the light modulator may control the angle of the light in two dimensions.
  • the angle adjustment amount by the light modulation unit may be smaller than the angle adjustment amount of light by scanning the scanning unit.
  • the light modulator may include: an acoustic optical device (AOD) configured to adjust an amplitude of light emitted from the light source; It may include; and AOM (Acousto Opitic Modulator) for adjusting the angle of the light emitted from the AOD.
  • AOD acoustic optical device
  • AOM Acoustic Opitic Modulator
  • the optical modulation control unit the high frequency generation unit for applying to the optical modulation unit for generating a high frequency signal;
  • a controller configured to adjust a generation time point of a first high frequency signal to adjust a first axis reference angle of the light and to adjust a generation time point of a second high frequency signal to adjust a second axis reference angle of the light.
  • the light modulating unit may include an AOM (Acousto Opitic Modulator) AOM for adjusting an angle of light emitted from the light source; And an AOD (Acousto Opitic Device) for adjusting the amplitude of the light emitted from the AOM.
  • AOM Acoustic Opitic Modulator
  • AOD Acoustic Opitic Device
  • the three-dimensional image display method the light modulation step of adjusting the amplitude and angle of the light emitted from the light source; A scanning step of emitting the light adjusted by the light modulation step while performing two-dimensional scanning; Displaying an integrated image on a screen by the light scanned by the scanning step; And displaying the integrated image displayed on the screen in space.
  • the image pixel may be displayed at the correct pixel position.
  • a clear object point can be displayed at an arbitrary position in the three-dimensional free space, and a clear three-dimensional image display is possible. Therefore, it is possible to provide a user with a clear three-dimensional stereoscopic image of high quality.
  • FIG. 1 illustrates an integrated image photographing apparatus for obtaining an integrated image.
  • FIG. 2 illustrates an integrated image display device displaying an integrated image.
  • FIG. 3 illustrates a deterioration of image quality occurring in an integrated image display apparatus displaying a conventional integrated image.
  • FIG. 4 illustrates an integrated image display apparatus displaying an integrated image according to an embodiment of the present invention.
  • FIG 5 illustrates a configuration of an optical modulation controller according to an embodiment of the present invention.
  • FIG. 7 illustrates a single element image displayed on a screen.
  • FIG 8 illustrates an element image displayed by an existing integrated image display device.
  • FIG 9 illustrates an element image displayed by the integrated image display device proposed in the present invention.
  • FIG. 10 illustrates a dynamic element image capable of moving up, down, left, and right according to the present invention.
  • FIG 11 illustrates an integrated image acquisition device proposed by the present invention.
  • FIG. 12 illustrates a 3D image reproducing apparatus according to another embodiment of the present invention.
  • FIG. 4 illustrates a three-dimensional image reproducing apparatus according to an embodiment of the present invention. 4 will be described in detail with respect to the three-dimensional image playback apparatus according to an embodiment of the present invention.
  • the 3D image reproducing apparatus includes a light source 400, an optical modulator 410, an optical modulation controller 420, a two-dimensional scanning mirror 430, a transmissive screen 300, and a micro lens array 310. It includes. Of course, other configurations than the above-described configuration may be included in the 3D image reproducing apparatus.
  • the light source 400 emits light, and the light modulator 410 vertically controls the path of the light emitted from the light source 400.
  • the light modulation controller 420 controls the light modulation unit 410 such that the path of the light emitted from the light source 400 is emitted vertically.
  • the 2D scanning mirror 430 deflects the light emitted from the light modulator 410 in the vertical or horizontal direction.
  • the transmissive screen 300 displays an integrated image, which is a beam deflected in the vertical or horizontal direction by the two-dimensional scanning mirror 430.
  • the micro lens array 310 displays the integrated image displayed on the transmissive screen 300 in space. That is, the micro lens array 310 displays an integrated image displayed on the transmissive screen 300 on a three-dimensional space and provides it to the user.
  • FIG. 5 shows a configuration of an optical modulation controller according to an embodiment of the present invention.
  • an optical modulation controller according to an exemplary embodiment of the present invention will be described in detail with reference to FIG. 5.
  • the light modulation controller 420 includes a phase controller 500 and a high frequency signal generator 510.
  • the optical modulation controller receives vertical angle deviation information and signal output delay deviation information for vertical deflection of light from the 3D image acquisition apparatus.
  • the maximum deflection angle at which light can be deflected by the light modulator 410 is called the maximum deflection angle, and the minimum deflection angle is called the minimum deflection angle.
  • the average of the maximum deflection angle and the maximum deflection angle is referred to as a reference deflection angle, and a high frequency that can deflect to the reference deflection angle is referred to as a reference high frequency.
  • the high frequency signal generator 510 generates a high frequency signal capable of adjusting the deviation angle of light using the reference angle and the deviation angle according to the input vertical angle deviation information.
  • the phase controller 500 controls the generation time of the high frequency signal generated by the high frequency signal generator 510 to adjust the time point at which light deflection occurs.
  • the phase controller 500 controls the generation time of the high frequency signal generated by the high frequency signal generator 510 using the signal output deviation information.
  • the signal output deviation information is negative or positive time delay deviation information, and by adding delay deviation information to the reference optical deflection time, it is possible to control whether or not the beam is output on the time axis.
  • the light (incident beam) incident on the light modulating unit 410 is deflected in a predetermined vertical direction at a predetermined time and for a predetermined time according to the information controlled by the light modulation control unit, and is incident to the two-dimensional scanning mirror.
  • the high frequency output for a predetermined time is to construct a pixel on the transmissive screen. If the high frequency is output for too long, the size of the pixel becomes a horizontally extended rectangle, which causes deterioration of image quality.
  • FIG. 6 illustrates a beam moving path by a two-dimensional scanning mirror according to an embodiment of the present invention.
  • the beam incident by the two-dimensional scanning mirror is moved horizontally and vertically on the transmissive screen in the same manner as the TV scan line, thereby displaying the two-dimensional integrated image to be displayed on the transmissive screen.
  • the two-dimensional scanning mirror can be configured as follows.
  • the first method consists of two mirrors. It is called a galvanometer mirror or an optical scanner. One mirror rotates left and right (horizontal direction) and the other mirror tilts up and down (vertical direction).
  • the two mirrors are composed of vertical intersections with each other.
  • the beam is first incident on one mirror, and is deflected by the rotation angle of the mirror and then incident on the other mirror. As above, the beam is deflected again by the second mirror.
  • a 2D image may be displayed on a 2D plane like a TV using an incident beam.
  • the second method uses a mirror that rotates in one vertical direction and a polygon mirror that rotates in the horizontal direction.
  • a beam scanning MEMS scanner made by micro-electro-mechanical systems (MEMS) technology. Also called a micro scanner.
  • the integrated image displayed on the transmissive screen can display a clear three-dimensional stereoscopic image by converging a beam at a precise position in space by a micro lens.
  • the present invention can finely adjust the position of the pixels constituting the image by the optical modulator and the two-dimensional scanning mirror, so that a clear three-dimensional image display is possible by placing the integrated image at the correct position. Do.
  • the position of the element image constituting the integrated image must be finely adjusted.
  • the element image for the object point must be displayed in the correct position so that it can be passed by the transmission screen so that the image in the three-dimensional free space can be displayed by the micro lens array.
  • FIG. 7 illustrates an element image constituting an integrated image
  • FIG. 8 illustrates a pattern in which a pattern in a quadrangular shape in the element image of FIG. 7 is displayed by a conventional integrated image display device.
  • the positional minute change of the pixel is possible by the light modulator and the two-dimensional scanning mirror.
  • Video information consists of two types.
  • the first information is a conventional two-dimensional integrated image, and includes the brightness distribution of the pixel.
  • the second information is phase information including the distribution of positional changes of each pixel.
  • the phase information has information on vertical, horizontal, left and right position variation of the corresponding pixel.
  • the two-dimensional integrated image is displayed on the transmissive screen by a light source and a two-dimensional scanning mirror that can adjust the intensity of the beam. Position change of the pixel is possible by the following method.
  • the position of the pixel must be controlled up, down, left, and right, and the beam is vertically deflected by the light modulator.
  • the beam moves along the reference light path.
  • the vertical deflection angle of the beam may be varied by adjusting the fundamental frequency around the reference high frequency signal using the up and down information of the phase information.
  • the time for which the beam is deflected by the light modulator may be adjusted by adjusting the time of the high frequency signal applied to the light modulator.
  • FIG. 11 schematically illustrates an apparatus for acquiring a 3D image according to another exemplary embodiment of the present invention.
  • a 3D image acquisition apparatus for displaying an integrated image according to another embodiment of the present invention will be described with reference to FIG. 11.
  • the 3D image acquisition apparatus includes a deviation information extractor 1100 for extracting vertical angle deviation information and signal output delay deviation information for vertical deflection of a beam constituting an element image. That is, the deviation information extractor 1100 extracts vertical angle deviation information and signal output delay deviation information for displaying a high resolution 3D stereoscopic image from the beam constituting the element image.
  • the deviation information extractor 1100 may extract various vertical angle deviation information and signal output delay deviation information according to the type of the 3D image display device displaying the integrated image and transmit the extracted information to the 3D image display device.
  • the 3D image display device may include a storage unit for storing vertical angle deviation information and signal output delay deviation information according to its characteristics, and using the stored vertical angle deviation information and signal output delay deviation information, Stereoscopic images can be displayed.
  • the optical modulation controller generates a high frequency signal for controlling a beam incident on the optical modulator using the input vertical angle deviation information and the signal output deviation information.
  • the optical modulation controller generates a high frequency signal using the vertical angle deviation information and the signal output delay deviation information transmitted from the 3D image acquisition apparatus.
  • FIG. 12 illustrates a 3D image reproducing apparatus according to another embodiment of the present invention.
  • a 3D image reproducing apparatus according to another embodiment of the present invention will be described in detail with reference to FIG. 12.
  • the 3D image reproducing apparatus 600 includes a light source 610, a light modulator 620, a 2D scanning mirror 630, a transmissive screen 640, and a micro lens array 650. And an optical modulation control unit 660.
  • a light source 610 a light modulator 620
  • a 2D scanning mirror 630 a transmissive screen 640
  • a micro lens array 650 a micro lens array 650.
  • an optical modulation control unit 660 may be further included in the 3D image reproducing apparatus 600.
  • the light source 610 emits light
  • the light modulator 620 adjusts the amplitude and angle of the light emitted from the light source 610.
  • the optical modulator 620 includes an acoustic optical device (AOD) 621 and an acoustic optical modulator (AOM) 622.
  • the AOD 621 adjusts the amplitude of the light emitted from the light source 610, which is determined by the pixel value.
  • the amplitude adjustment by the AOD 621 is controlled by the light modulation control unit 660.
  • the AOM 622 adjusts the angle of the amplitude-adjusted light at the AOD 621, ultimately adjusting where the light is displayed.
  • the AOM 622 adjusts the angle of light in two dimensions, thereby adjusting the planar position on the transmissive screen 640 on which the light is to be displayed.
  • the angle adjustment by the AOM 622 corresponds to the fine adjustment
  • the angle adjustment by the AOM 622 corresponds to the adjustment for finely changing the position where the light is displayed. That is, the micro-modification as shown in FIGS. 9 and 10 is performed by the AOM 622.
  • Position adjustment by the AOM 622 is also controlled by the light modulation controller 660.
  • the light modulation control unit 660 may include a high frequency generating element for generating a high frequency signal and applying it to the AOM 622.
  • the light modulation control unit 660 includes a control element for controlling the high frequency generation point in the high frequency generation element. The control element adjusts the generation time of the high frequency signal for adjusting the X axis reference angle of the light and the generation time of the high frequency signal for adjusting the Y axis reference angle of the light.
  • the two-dimensional scanning mirror 630 deflects the light emitted from the light modulator 620 vertically and horizontally and scans the transmissive screen 640 as shown in FIG. 6. As a result, an integrated image is displayed on the transmissive screen 640.
  • the angle adjustment amount of light by the two-dimensional scanning mirror 630 is greater than the angle adjustment amount of light by the AOM 622.
  • the micro lens array 650 displays the integrated image displayed on the transmissive screen 640 in space. That is, the micro lens array 650 displays the integrated image displayed on the transmissive screen 640 on a three-dimensional space and provides the same to the user.
  • the arrangement of the AOD 621 and the AOM 622 constituting the light modulator 620 may be interchanged. That is, the AOM 622 may perform amplitude modulation of the light after adjusting the angle of the light prior to the AOD 621.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

La présente invention concerne un dispositif d'enregistrement d'image en trois dimensions ou un dispositif d'affichage utilisant un réseau de micro-lentilles, et plus spécifiquement, l'invention concerne un procédé pour commander la position d'images élémentaires formant une image en trois dimensions, affichées sur un écran de type à transmission. A cette fin, un dispositif d'affichage pour une image en trois dimensions selon l'invention comprend: une source lumineuse, un élément modulant la lumière pour manipuler l'amplitude et l'angle de la lumière émise depuis la source lumineuse; un élément de balayage pour assurer un balayer en deux dimensions de la lumière provenant de l'élément modulant la lumière et émettre ladite lumière; un écran pour affichage une image intégrale résultant de la lumière émise par l'élément de balayage; et un réseau de lentilles pour afficher dans un espace l'image intégrale affichée sur l'écran.
PCT/KR2012/003027 2011-04-19 2012-04-19 Dispositif d'enregistrement et d'affichage d'image en trois dimensions WO2012144836A2 (fr)

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KR10-2011-0036103 2011-04-19
KR20110036103 2011-04-19

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WO2012144836A3 WO2012144836A3 (fr) 2013-01-10

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KR20170037346A (ko) * 2015-09-25 2017-04-04 엘지이노텍 주식회사 집적 영상 처리 장치
CN108141580A (zh) * 2015-09-25 2018-06-08 Lg伊诺特有限公司 集成图像处理装置及使用该集成图像处理装置的车灯
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KR102486430B1 (ko) * 2015-09-25 2023-01-10 엘지이노텍 주식회사 영상 처리 장치

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