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Proceedings Paper

The research on multi-projection correction based on color coding grid array
Author(s): Fan Yang; Cheng Han; Baoxing Bai; Chao Zhang; Yunxiu Zhao
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Paper Abstract

There are many disadvantages such as lower timeliness, greater manual intervention in multi-channel projection system, in order to solve the above problems, this paper proposes a multi-projector correction technology based on color coding grid array. Firstly, a color structured light stripe is generated by using the De Bruijn sequences, then meshing the feature information of the color structured light stripe image. We put the meshing colored grid intersection as the center of the circle, and build a white solid circle as the feature sample set of projected images. It makes the constructed feature sample set not only has the perceptual localization, but also has good noise immunity. Secondly, we establish the subpixel geometric mapping relationship between the projection screen and the individual projectors by using the structure of light encoding and decoding based on the color array, and the geometrical mapping relation is used to solve the homography matrix of each projector. Lastly the brightness inconsistency of the multi-channel projection overlap area is seriously interfered, it leads to the corrected image doesn’t fit well with the observer's visual needs, and we obtain the projection display image of visual consistency by using the luminance fusion correction algorithm. The experimental results show that this method not only effectively solved the problem of distortion of multi-projection screen and the issue of luminance interference in overlapping region, but also improved the calibration efficient of multi-channel projective system and reduced the maintenance cost of intelligent multi-projection system.

Paper Details

Date Published: 24 October 2017
PDF: 8 pages
Proc. SPIE 10459, AOPC 2017: Optical Storage and Display Technology, 104590F (24 October 2017);
Show Author Affiliations
Fan Yang, Changchun Univ. of Science and Technology (China)
Cheng Han, Changchun Univ. of Science and Technology (China)
Baoxing Bai, Changchun Univ. of Science and Technology (China)
Chao Zhang, Changchun Univ. of Science and Technology (China)
Yunxiu Zhao, Changchun Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 10459:
AOPC 2017: Optical Storage and Display Technology
Byoungho Lee; Yongtian Wang; Xiaodi Tan; Xiangping Li, Editor(s)

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