CN102595178A - Field-butting three-dimensional display image correction system and method - Google Patents
Field-butting three-dimensional display image correction system and method Download PDFInfo
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- CN102595178A CN102595178A CN2012100453869A CN201210045386A CN102595178A CN 102595178 A CN102595178 A CN 102595178A CN 2012100453869 A CN2012100453869 A CN 2012100453869A CN 201210045386 A CN201210045386 A CN 201210045386A CN 102595178 A CN102595178 A CN 102595178A
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Abstract
The invention discloses a field-butting three-dimensional display image correction system, comprising a two-dimensional display unit array, a lens array, a diaphragm array, an arc-shaped longitudinal scattering screen, a planar splitting mirror, a cylindrical diffuser, an image collection component and an image treatment component, wherein the above parts are sequentially arranged. The image displayed by the two-dimensional display unit array passes through the lens array and the diaphragm array and then projected on the same position of the arc-shaped longitudinal scattering screen, and images are formed on the other side of the arc-shaped longitudinal scattering screen; the cylindrical diffuser is arranged in the circle center of the arc-shaped longitudinal scattering screen; imaging beams are scattered to the planar splitting mirror via the cylindrical diffuser and then reflected to the image collection component via the planar splitting mirror; the image treatment component is connected between the image collection component and the two-dimensional display unit array and used for finally treating the image collected by the image collection component. The invention further discloses a field-butting three-dimensional display image correction method.
Description
Technical field
The present invention relates to the three-dimensional corrective system and the bearing calibration of a kind of image correction system and bearing calibration, particularly a kind of field stitching.
Background technology
The image rectification technology is the research focus of computer vision and image processing field always; And along with the high speed development of three-dimensional panorama Display Technique, through point-to-point mapping, camera obtain manner three-dimensional display system being carried out image rectification is the main means that adopt at present.Existing stereoscopic three-dimensional display device is mostly according to providing abundant observation visual angle in the laterally or vertical mode through field stitching, let two eyes of observer across different visual angles to obtain fine and smooth three-dimensional perception.Principle in view of the above, the image information of reproducing on the two-dimentional display system is relevant with concrete three-dimensional display apparatus visual angle design parameter, often need pass through and the required corresponding image processing process of visual angle information that appears.As far as the projection three-dimensional display apparatus, the researcher can proofread and correct imaging optical system usually, and has ignored the error of entire system aberration and image generating algorithm, and the effect that image comes out through the three-dimensional display system Projection Display is not fully up to expectations.
Generally; Many aspects such as successful three-dimensional display apparatus need take all factors into consideration image resolution ratio, three-dimensional display effect, assess the cost; The stereoscopic three-dimensional display device of having developed at present is subject to the image that factor such as system configuration often causes theoretical case to generate and can not perfectly shows, seeks a kind of image correction system and method for having taken all factors into consideration problems such as system imaging aberration and device precision and has more actual application value.
Summary of the invention
Main purpose of the present invention be to make up a kind of possess generally adaptive, can be used for multiple stereoscopic three-dimensional display image correction system and method, for realizing above-mentioned purpose, the invention provides a kind of field stitching three-dimensional display image correction system;
Field stitching three-dimensional display image correction system; Comprise and setting gradually and two-dimentional array of display cells, lens arra, aperture array, the arc vertical diffuser screen vertical with horizontal plane; Wherein two-dimentional array of display cells images displayed is through projecting on the vertical diffuser screen of arc and in the opposite side imaging, also comprising plane beam splitter, cylindrical diffuser, image acquisition component and image processing parts behind lens arra, the aperture array;
Wherein, Cylindrical diffuser is vertical with horizontal plane; The axis of described cylinder diffuser is positioned at the circle centre position of the vertical diffuser screen of said arc horizontal cross-section gained arc; Be provided with the plane beam splitter between vertical diffuser screen of arc and the cylindrical diffuser, plane beam splitter folded light beam exit direction is provided with the image acquisition component of surveying this folded light beam, is connected with the image processing parts between image acquisition component and the two-dimentional array of display cells.
The curved distribution respectively of described two-dimensional display array, lens arra, aperture array, and with the vertical diffuser screen of arc be the same center of circle, adopt said structure after, make the 3-D view of field stitching show and imaging has more third dimension.
The surface that described plane beam splitter receives the two-dimensional display array outgoing beam is provided with first polarizer; Light beam receiving plane the place ahead of described image acquisition component is provided with second polarizer; And the polarization direction of first polarizer and second polarizer is vertical each other; Two mutually orthogonal polarizers of polarization direction are set on direction of beam propagation, its role is to eliminate other stray lights outside the imaging beam of cylindrical diffuser institute scattering.
The angle of described plane beam splitter and horizontal plane is 45 °.
Described two-dimentional array of display cells is the array that single two dimensional display or a plurality of two dimensional display are formed, and wherein, two dimensional display is LCD, LCOS, PDP, LED, CRT, OLED or projector.
Described image acquisition component is that CCD or CMOS take device.
The present invention relies on above-mentioned field stitching three-dimensional display image correction system, and a kind of field stitching three-dimensional display method for correcting image also is provided, and its concrete steps are following:
Step 1: the display unit in the two-dimentional array of display cells shows a bright spot, and coordinate is (X
0, Y
0);
Step 2: this coordinate points (X
0, Y
0) light beam that sends projects to the imaging of directional scattering screen circle centre position through lens arra, aperture array; Through illuminating a point in cylindrical diffuser surface behind the beam splitter of plane, the diffused ray that this point sends is caught by image acquisition component through the reflection of plane beam splitter;
Step 3: the image processing parts are noted the coordinate points (X in the two-dimensional display array respectively
0, Y
0) and the coordinate points information (X that catches of image acquisition component
1, Y
1), and two coordinate points are generated corresponding mapping relations; All display dot ends of scan of the display unit of image processing parts Control Circulation sweep record coordinate points map information in two-dimentional array of display cells;
Step 4: computer obtain to present the original image at the corresponding visual angle of three-dimensional body, carry out from coordinate points (X according to mapping relations
1, Y
1) to (X
0, Y
0) conversion, the three-dimensional display required image is proofreaied and correct.
Above-mentioned 3-D view bearing calibration, is proofreaied and correct image through mapping relations when the 3-D view of field stitching is shown as picture through setting up the mapping relations between all actual imaging coordinate points of all original coordinates points of image and image.
Field stitching three-dimensional display image correction system of the present invention and bearing calibration have been taken all factors into consideration under the problem of system imaging aberration and device precision and to be obtained full-scale condition from the angle of the actual Projection Display of picture point and show that down required image mapped concerns; After through resulting mapping relations 3-D view being proofreaied and correct; Improved image quality; Resulting 3D vision image is more near true picture, and can be widely used in the stereoscopic three-dimensional display device based on many Projection Display or timesharing display splicing principle.
Description of drawings
Fig. 1 is a field stitching three-dimensional display image correction system structural representation;
Fig. 2 is a field stitching three-dimensional display image correction system structure cutaway view;
Fig. 3 is a field stitching three-dimensional display system display cell structure sketch map;
Fig. 4 is a field stitching three-dimensional display method for correcting image scan round sketch map;
Fig. 5 is a field stitching three-dimensional display image correction system image space sketch map;
Fig. 6 is a field stitching three-dimensional display method for correcting image flow chart.
Embodiment
Below in conjunction with description of drawings one embodiment of the present invention.
Fig. 1 is a system configuration sketch map of the present invention; Fig. 2 is a system configuration cutaway view of the present invention; As shown in the figure, field stitching three-dimensional display image correction system of the present invention comprises the vertical diffuser screen of the two-dimentional array of display cells 1, lens arra 2, aperture array 3, the arc that set gradually 4, plane beam splitter 5, and the vertical diffuser screen 4 of arc is at vertical scattered beam; Horizontal scattered beam not; The circle centre position of the vertical diffuser screen 4 place arcs of arc is provided with cylindrical diffuser 6, and, under same level height; The center of circle of the horizontal cross-section gained circle of cylinder diffuser 6 overlaps with the center of circle of the vertical diffuser screen 4 horizontal cross-section gained arcs of arc; Be provided with plane beam splitter 5 between vertical diffuser screen 4 of arc and the cylindrical diffuser 6, plane beam splitter 5 is 45 ° with the angle of horizontal plane, and the surface that plane beam splitter 5 receives two-dimensional display array 1 outgoing beam is provided with first polarizer 8; Beam splitter 5 folded light beam exit directions in plane are provided with image acquisition component 7; And before the light beam receiving plane of image acquisition component 7, be provided with polarization direction second polarizer 9 vertical with first polarizer 8, and other stray lights that can cross outside the light that sends on the cylindrical diffuser of filtering 6 surfaces so are set, can accurately catch the projector space position and concern to guarantee image acquisition component 7; Wherein two-dimentional array of display cells 1 images displayed is through projecting to the same position on the vertical diffuser screen 4 of arc and forming images at opposite side behind lens arra 2, the aperture array 3; Imaging beam scatters to plane beam splitter 5 through cylindrical diffuser 6; Imaging beam is detected by image acquisition component 7 after 5 reflections of plane beam splitter again; Be connected with image processing parts 10 between image acquisition component 7 and the two-dimentional array of display cells 1; Image acquisition component 7 will detect imaging beam information and pass to image processing parts 10, will be for data processing by image processing parts 10.
15 projectors that the part of serve as reasons two-dimentional array of display cells 1, lens arra 2 and aperture array 3 shown in Figure 3 is formed, 15 projectors are horizontally-spliced, vertically be staggered, and aperture is close to lens the place ahead; 15 projectors in the horizontal direction aligned perpendicular in horizontal plane and the axis through the vertical diffuser screen of arc 4 centers of circle; All lens and aperture dislocation are in the vertical successively arranged; And the horizontal spacing of adjacent two two-dimentional display units is the width of aperture, and all apertures splice arrangement in the horizontal.
Field stitching three-dimensional display method for correcting image flow process is as shown in Figure 6, at first on two dimensional image array of display cells 1, shows a white bright spot 11, and as shown in Figure 4, coordinate is (X
0, Y
0); The light beam of these bright spot 11 outgoing projects to the vertical diffuser screen 4 of arc behind scioptics array 2, the aperture array 3 successively; And in its opposite side imaging; Imaging beam scatters to plane beam splitter 5 through the cylindrical diffuser 6 that places the vertical diffuser screen of arc place arc circle centre position, and imaging beam is detected and note diffusion luminous point (X by image acquisition component 7 again after 5 reflections of plane beam splitter
1, Y
1), as shown in Figure 5, and the image that collects is passed to image processing parts 10 by image acquisition component 7, image processing parts 10 are set up two coordinate (X
0, Y
0), (X
1, Y
1) between mapping relations; Let pixel show white bright spot 11 one by one on the two dimensional image array of display cells 1,7 of image acquisition component are the coordinate figure of the diffusion luminous point 12 that arrives of record acquisition one by one, and image processing parts 10 are set up the mapping relations of being had a few.Like this when pixels all on the two dimensional image array of display cells 1 all by after scanned, the coordinate (X of all diffusion luminous points 12 that occurred in the zone that image acquisition component 7 is caught
1, Y
1) all be mapped on the two dimensional image array of display cells 1 corresponding (X
0, Y
0), just the image projection relation of three-dimensional display system has been carried out point-to-point test and mapping.Point-to-point test can generate image according to the mapping relations that obtained after accomplishing with mapping under the immovable situation of system parameters, threedimensional model that finally will show or scene are carried out suitable precorrection according to mapping relations.
Claims (7)
1. field stitching three-dimensional display image correction system; Comprise and setting gradually and two-dimentional array of display cells (1), lens arra (2), aperture array (3), the arc vertical diffuser screen (4) vertical with horizontal plane; Wherein two-dimentional array of display cells (1) images displayed projects to the vertical diffuser screen of arc (4) and upward and at opposite side forms images behind lens arra (2), aperture array (3); It is characterized in that, also comprise plane beam splitter (5), cylindrical diffuser (6), image acquisition component (7) and image processing parts (10);
Wherein, Cylindrical diffuser (6) is vertical with horizontal plane; The axis of described cylinder diffuser (6) is positioned at the circle centre position of the vertical diffuser screen of said arc (4) horizontal cross-section gained arc; Be provided with plane beam splitter (5) between vertical diffuser screen of arc (4) and the cylindrical diffuser (6); Plane beam splitter (5) folded light beam exit direction is provided with the image acquisition component (7) of surveying this folded light beam, is connected with image processing parts (10) between image acquisition component (7) and the two-dimentional array of display cells (1).
2. field stitching three-dimensional display image correction system according to claim 1 is characterized in that, the curved distribution respectively of described two-dimensional display array (1), lens arra (2), aperture array (3), and with the vertical diffuser screen of arc (4) be the same center of circle.
3. field stitching three-dimensional display image correction system according to claim 1; It is characterized in that; The surface that described plane beam splitter (5) receives two-dimensional display array (1) outgoing beam is provided with first polarizer (8); Light beam receiving plane the place ahead of described image acquisition component (7) is provided with second polarizer (9), and first polarizer (8) is vertical each other with the polarization direction of second polarizer (9).
4. field stitching three-dimensional display image correction system according to claim 1 is characterized in that, described plane beam splitter (5) is 45 ° with the angle of horizontal plane.
5. field stitching three-dimensional display image correction system according to claim 1; It is characterized in that; Described two-dimentional array of display cells (1) is the array that single two dimensional display or a plurality of two dimensional display are formed; Wherein, two dimensional display is LCD, LCOS, PDP, LED, CRT, OLED or projector.
6. field stitching three-dimensional display image correction system according to claim 1 is characterized in that, described image acquisition component (7) is that CCD or CMOS take device.
7. the field stitching three-dimensional display method for correcting image according to the said corrective system of claim 1 is characterized in that, comprises following steps:
Step 1: the display unit in the two-dimentional array of display cells (1) shows a bright spot, and coordinate is (X
0, Y
0);
Step 2: this coordinate points (X
0, Y
0) light that sends projects to the imaging of directional scattering screen (4) circle centre position through lens arra (2), aperture array (3); Illuminate a point through plane beam splitter (5) back on cylindrical diffuser (6) surface, the diffused ray that this point sends is caught by image acquisition component (7) through the reflection of plane beam splitter (5);
Step 3: image processing parts (10) are noted the coordinate points (X in the two-dimensional display array (1) respectively
0, Y
0) and the coordinate points information (X that catches of image acquisition component (7)
1, Y
1), and two coordinate points are generated corresponding mapping relations; All display dot ends of scan of the display unit of image processing parts (10) Control Circulation sweep record coordinate points map information in two-dimentional array of display cells (1);
Step 4: computer (10) obtain to present the original image at the corresponding visual angle of three-dimensional body, carry out from coordinate points (X according to mapping relations
1, Y
1) to (X
0, Y
0) conversion, the three-dimensional display required image is proofreaied and correct.
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|---|---|---|---|
| CN201210045386.9A CN102595178B (en) | 2012-02-27 | 2012-02-27 | Field stitching three dimensional rendered images corrective system and bearing calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045386.9A CN102595178B (en) | 2012-02-27 | 2012-02-27 | Field stitching three dimensional rendered images corrective system and bearing calibration |
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| CN102595178A true CN102595178A (en) | 2012-07-18 |
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| CN103888741A (en) * | 2014-02-25 | 2014-06-25 | 北京淳中视讯科技有限公司 | Method, device and system for geometric correction assistance of projected image |
| CN107315315A (en) * | 2017-08-28 | 2017-11-03 | 北京铂石空间科技有限公司 | Image alignment device and projector equipment |
| CN107340602A (en) * | 2017-06-09 | 2017-11-10 | 利亚德光电股份有限公司 | 3D display apparatus and method |
| CN108061972A (en) * | 2016-11-07 | 2018-05-22 | 北京邮电大学 | A kind of curved surface light field display system |
| CN108776387A (en) * | 2018-08-13 | 2018-11-09 | 成都工业学院 | The double vision 3D display device and method of non-uniform resolution and uniform visual angle |
| CN110884262A (en) * | 2014-05-20 | 2020-03-17 | 维罗斯-纯粹数字有限公司 | Printing system and method |
| US11953689B2 (en) | 2020-09-30 | 2024-04-09 | Hes Ip Holdings, Llc | Virtual image display system for virtual reality and augmented reality devices |
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| CN108776387A (en) * | 2018-08-13 | 2018-11-09 | 成都工业学院 | The double vision 3D display device and method of non-uniform resolution and uniform visual angle |
| US11953689B2 (en) | 2020-09-30 | 2024-04-09 | Hes Ip Holdings, Llc | Virtual image display system for virtual reality and augmented reality devices |
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