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WO2019112096A1 - Procédé de mise en correspondance d'image de point de vue destiné à un système d'imagerie intégré utilisant une lentille hexagonale - Google Patents

Procédé de mise en correspondance d'image de point de vue destiné à un système d'imagerie intégré utilisant une lentille hexagonale Download PDF

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Publication number
WO2019112096A1
WO2019112096A1 PCT/KR2017/014393 KR2017014393W WO2019112096A1 WO 2019112096 A1 WO2019112096 A1 WO 2019112096A1 KR 2017014393 W KR2017014393 W KR 2017014393W WO 2019112096 A1 WO2019112096 A1 WO 2019112096A1
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WO
WIPO (PCT)
Prior art keywords
subpixel
hexagonal
calculation step
hexagonal lens
lens
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Ceased
Application number
PCT/KR2017/014393
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English (en)
Korean (ko)
Inventor
홍지수
강훈종
홍성희
신춘성
김영민
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Korea Electronics Technology Institute
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Korea Electronics Technology Institute
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    • 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
    • G02B30/10—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images using integral imaging methods
    • 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
    • H04N13/30—Image reproducers
    • 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

Definitions

  • the present invention relates to 3D image display technology, and more particularly to an integrated image display.
  • a square lens array is used to efficiently use the limited amount of information.
  • the periodic structure of the lens array is similar to the periodic structure of the subpixel of the display panel, there is a problem that the moiré pattern appears in the three-dimensional image recognized by the observer.
  • the method of solving the moiré pattern is employed by tilting the lenticular lens so that the periodic structure of the lens array is different from the periodic structure of the sub-pixels of the panel.
  • a hexagonal shape constituting a two-dimensional lens array is not a regular shape but an arbitrary hexagonal shape capable of hexagonal tiling is used, the fill factor of the lens array is maximized, It is possible to remove the Moire pattern by making it significantly different from the periodic structure.
  • a method of mapping a viewpoint image comprising: a first calculation step of calculating each hexagon lens in which each subpixel on the screen belongs; And a second calculation step of calculating each pixel of each viewpoint image to be mapped to each subpixel on the basis of the relationship between each subpixel and each hexagonal lens calculated in the first calculation step.
  • the first calculation step may include a first calculation step of calculating each grating to which each subpixel belongs; And a second calculation step of calculating which of the six hexagonal lenses included in each grid calculated in the first calculation step belongs to each of the subpixels.
  • the gratings are divided into a first basic vector connecting 'the center of the specific hexagonal lens' to the 'center of the first hexagonal lens adjacent to the specific hexagonal lens', and a second basic vector 'the center of the specific hexagonal lens' Can be generated by linearly combining the second fundamental vectors connecting " center "
  • each grid may be indexed with (?,?).
  • the hexagonal lenses partially including the gratings calculated in the first calculation step are (?,?), beta], [alpha], [beta] + 1), and [alpha] + 1, [beta] + 1.
  • the second calculation step may be to calculate each hexagonal lens to which each subpixel belongs by using an equation of a straight line connecting points shared by the hexagonal lenses partially included in each grid calculated in the first calculation step have.
  • the second calculation step may be to calculate each pixel of each viewpoint image to be mapped to each subpixel based on the relative positional difference between 'each subpixel' and the 'center of each hexagonal lens to which each subpixel will belong' have.
  • the hexagonal lens may be a hexagonal lens other than regular hexagonal.
  • a viewpoint image mapping method includes providing a viewpoint image; And a second calculation step of calculating each hexagonal lens belonging to each subpixel on the screen and calculating each pixel of each viewpoint image to be mapped to each subpixel on the basis of the relationship between each subpixel and each hexagonal lens .
  • a multi-view image display method including: a first calculation step of calculating each hexagonal lens in which each sub pixel on the screen belongs to; A second calculation step of calculating each pixel of each viewpoint image to be mapped to each subpixel on the basis of the relationship between each subpixel and each hexagonal lens calculated in the first calculation step; And mapping and displaying each pixel of each viewpoint image calculated in the second calculation step on each subpixel on the display panel screen.
  • the integrated image system calculates each hexagonal lens in which each subpixel on the screen belongs, and calculates a difference between each subpixel based on the relationship between each subpixel and each calculated hexagonal lens
  • a processor for calculating each pixel of each viewpoint image to be mapped A display panel in which each pixel of each viewpoint image calculated by the processor is mapped and displayed in each subpixel on the screen; And a hexagonal lens array positioned in front of the display panel.
  • Fig. 1 is a view showing a basic configuration and principle of an integrated image and multi-point display, in which (a) shows a configuration of a display system, Fig. 2 (b)
  • FIG. 2 is a view showing the difference between the integrated image display and the multi-view display, in which (a) shows the ray distribution characteristics of the multi-view display, (b)
  • FIG. 3 is a view showing a viewpoint image rendering method of a multi-view display
  • FIG. 4 is a diagram illustrating a viewpoint image rendering method of an integrated image display
  • Figure 5 illustrates a method of parameterizing a hexagonal lens array
  • FIG. 6 is a diagram illustrating a basic vector and a lattice structure for positioning a hexagonal lens array
  • FIG. 7 shows a method of defining a basic vector for positioning a hexagonal lens array and examples of coordinates
  • FIG. 8 is a diagram illustrating indexes of a grid including subpixels and corresponding subpixels
  • FIG. 10 is a diagram illustrating a coordinate calculation method for finding a hexagonal lens to which a subpixel belongs to a (?,?) Lattice
  • FIG. 11 is a diagram illustrating an index definition method of a viewpoint image
  • FIG. 12 is a diagram showing a situation in which subpixels at (x p , y p ) belong to the (? ',?') Th lens,
  • FIG. 13 is a flow chart for explaining a viewpoint image mapping method of an integrated image system using a hexagonal lens
  • FIG. 14 is a diagram summarizing specific contents of a viewpoint image mapping method of an integrated image system using a hexagonal lens
  • 15 is a block diagram of an integrated imaging system using a hexagonal lens.
  • Figure 1 shows the basic structure and principle of an integrated image or multi-view display.
  • the two-dimensional lens array may be attached only in front of the display panel as shown in FIG.
  • each pixel of the display panel expresses a specific light ray of a light field after passage through the lens.
  • Figure 2 shows the difference between an integrated image display and a multi-view display.
  • the bundles of pixels passing through each lens are defined to be shifted so that the light rays, which are taken by the respective pixels, converge at specific points in time (V1, V2, 7) It is a display that is designed.
  • a view image can be rendered using an orthographic camera for a collection of rays according to directions.
  • the image to be displayed on the display panel should be appropriately mapped into a single image in consideration of the hardware structure such as the lens array structure and parameters of the display panel.
  • the arbitrary hexagonal lens array includes not only an array of regular hexagonal lenses but also a lens array composed of hexagonal lenses other than regular hexagonal lenses.
  • a structure of a hexagonal lens array capable of hexagonal tiling is required. Therefore, in the embodiment of the present invention, a mapping method for a hexagon that can be hexagonal tiling only by lateral shift .
  • hexagons have a central symmetric characteristic. Therefore, when the center of the hexagon is moved to the origin of the xy plane as shown in FIG. 5, the hexagon can be parameterized by expressing three vertexes continuous in the counterclockwise direction in the coordinates of the polar coordinate system.
  • each hexagon lens can be indexed with coefficients of a linear combination.
  • FIG. 7 shows a method and coordinates for defining a basic vector for positioning a hexagonal lens array.
  • viewpoint image mapping it is necessary to calculate, for each subpixel on the screen, how the subpixel belongs to the inside of the hexagon lens having an index, and the relative position difference with respect to the center of the hexagon lens.
  • the first step for this calculation is to find out how many sub-pixels belong to the lattice in the lattice generated by the basic vector as shown in FIG. Assuming that the leftmost and lowermost coordinates of the lattice are? S +? T, this lattice can be characterized by a lattice having an index of (?,?). At this time, the coordinates of the subpixel having the current interest (x p, y p) is the index of the lattice belonging to a sub-pixel when d ( ⁇ , ⁇ ) can be calculated by the following equation (1).
  • the subpixels belonging to the grid having the indices of (?,?) At this time are (?,?), (? + 1,?) 1), and it is necessary to calculate exactly which hexagonal lens the corresponding subpixel belongs to.
  • the index of the viewpoint image is defined in the same manner as in FIG. 11 in the embodiment of the present invention. That is, the subpixel corresponding to the center point of the hexagonal lens utilizes the information of the viewpoint image having the index of (0, 0), and the first index is -1 or +1 whenever the subpixel moves left and right by one pixel, Each time you move one subpixel, the second index is +1 or -1.
  • the viewpoint image index (v x , v y ) of the subpixel (x p , y p ) can be calculated by the following equation (3) in the situation as shown in FIG.
  • FIG. 13 is a flowchart provided for explaining a viewpoint image mapping method of an integrated image system using a hexagonal lens.
  • subpixels constituting the display panel are set (S110). Specifically, the size and the number of subpixels are set.
  • the hexagonal lenses constituting the hexagonal lens array are indexed (S120), the grids are generated and indexed (S130), and the subpixels are indexed (S140).
  • the hexagonal lens indexing method is shown in Fig. 6, the grid generation & indexing method is shown in Fig. 8, and the subpixel indexing method is shown in Fig. 11, respectively.
  • viewpoint images to be displayed on the display panel are obtained (S150).
  • each lattice to which each subpixel belongs is calculated (S160), and it is calculated (S170) whether each subpixel belongs to one of the hexagonal lenses partially included in each grid calculated in the step S160.
  • Each viewpoint image to be mapped to each subpixel is calculated based on the relative positional difference between 'each subpixel' and 'center of each hexagonal lens to which each subpixel will belong' (S180)
  • Each pixel of each viewpoint image is calculated (S190).
  • each pixel of each viewpoint image is mapped to each subpixel to display an integrated image through the hexagon lens array.
  • the integrated imaging system using a hexagonal lens includes a communication unit 210, a processor 220, a display 230, and a storage unit 240, as shown in FIG.
  • the communication unit 210 is a communication unit that receives a plurality of viewpoint images from an external device or an external network, and the storage unit 240 stores viewpoint images.
  • the communication unit 210 and the storage unit 240 function as image providing means for providing view images.
  • the processor 220 maps the pixels of the viewpoint images to the subpixels according to the viewpoint image mapping method described above.
  • the storage unit 240 provides the necessary storage space for the processor 220.
  • the display 230 includes the hexagonal lens array and the display panel described above. Pixels of each viewpoint image are mapped and displayed on each subpixel on the display panel screen, and the display panel screen is transmitted to the user as an integrated image by a hexagon lens array located in front.
  • the technical idea of the present invention can also be applied to a computer-readable recording medium having a computer program for performing the functions of the apparatus and method according to the present embodiment.
  • the technical idea according to various embodiments of the present invention may be embodied in computer-readable code form recorded on a computer-readable recording medium.
  • the computer-readable recording medium is any data storage device that can be read by a computer and can store data.
  • the computer-readable recording medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical disk, a hard disk drive, or the like.
  • the computer readable code or program stored in the computer readable recording medium may be transmitted through a network connected between the computers.

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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)

Abstract

L'invention concerne un procédé de génération d'une image à afficher sur un écran dans un système d'imagerie intégré qui utilise une lentille hexagonale en mosaïque hexagonale à travers un décalage latéral, l'image étant générée par mise en correspondance à partir d'une pluralité d'images de point de vue. Un procédé de mise en correspondance d'image de point de vue selon un mode de réalisation de la présente invention comprend : une première étape de calcul permettant de calculer chaque lentille hexagonale à l'intérieur de laquelle appartient chaque sous-pixel sur un écran ; et une seconde étape de calcul permettant de calculer chaque pixel de chaque image de point de vue à mettre en correspondance avec chaque sous-pixel sur la base de la relation entre chaque sous-pixel et chaque lentille hexagonale calculée lors de la première étape de calcul. En conséquence, une image à afficher sur un panneau d'affichage peut être générée par mise en correspondance d'une image de point de vue par rapport à une image intégrée qui utilise un réseau de lentilles hexagonal arbitraire qui peut éliminer un motif Moiré.
PCT/KR2017/014393 2017-12-07 2017-12-08 Procédé de mise en correspondance d'image de point de vue destiné à un système d'imagerie intégré utilisant une lentille hexagonale Ceased WO2019112096A1 (fr)

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KR10-2017-0167146 2017-12-07
KR1020170167146A KR102006079B1 (ko) 2017-12-07 2017-12-07 육각 렌즈를 이용한 집적영상 시스템의 시점영상 매핑 방법

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Cited By (1)

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CN113031262A (zh) * 2021-03-26 2021-06-25 中国人民解放军陆军装甲兵学院 一种集成成像系统显示端像素值计算方法及系统

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CN113538625B (zh) * 2021-07-29 2024-03-15 中国人民解放军国防大学联合作战学院 基于六角格剖分的覆盖范围定位方法及存储介质

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KR20160068758A (ko) * 2013-09-04 2016-06-15 루멘코 엘엘씨 화상의 이중-축 활성화를 달성하기 위한 마이크로 렌즈 어레이에 대한 화소 매핑 및 인쇄
KR101614121B1 (ko) * 2014-12-24 2016-04-20 서울대학교산학협력단 집적 영상 표시 방법 및 장치
KR20170097182A (ko) * 2014-12-24 2017-08-25 코닌클리케 필립스 엔.브이. 무안경 입체영상 디스플레이 디바이스
KR101691297B1 (ko) * 2015-07-01 2016-12-29 광운대학교 산학협력단 색분리 현상을 제거하는 깊이우선 집적 영상 디스플레이 시스템

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113031262A (zh) * 2021-03-26 2021-06-25 中国人民解放军陆军装甲兵学院 一种集成成像系统显示端像素值计算方法及系统
CN113031262B (zh) * 2021-03-26 2022-06-07 中国人民解放军陆军装甲兵学院 一种集成成像系统显示端像素值计算方法及系统

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KR20190067328A (ko) 2019-06-17

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