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Proceedings Paper

Computer modeling and simulation of light field camera and digital refocusing with attenuating mask
Author(s): Xiu-bao Zhang; Yan Yuan; Zhi-liang Zhou; Cheng-ming Sun
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Paper Abstract

This paper presents a kind of light field camera with a patterned mask inserted between lens and sensor in a conventional camera. The mask can attenuate the incident light rays as well as the baseband signal is carried by carrier signal during remote transmission to reduce energy loss in radio and telecommunication field. Linearly independent weighted sums of light rays can be recorded by the sensor and rays combined in coding way can be decoded according to modulation-demodulation theory. Through rearranging the tile of the 2D Fourier transform of image on sensor into 4D planes, the light field can be reconstructed. Although light field image is captured by the camera in single photographic exposure time, sharp images focused at different depths could be obtained by computation. This paper researches on the principle, modeling and simulation of the camera according to ray transmission path. Two defocused light field images are simulated by using some supposed camera parameters and the digital refocused images are reconstructed respectively.

Paper Details

Date Published: 6 August 2009
PDF: 9 pages
Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 73842O (6 August 2009); doi: 10.1117/12.836543
Show Author Affiliations
Xiu-bao Zhang, Beihang Univ. (China)
Yan Yuan, Beihang Univ. (China)
Zhi-liang Zhou, Univ. of Science and Technology of China (China)
Cheng-ming Sun, Beihang Univ. (China)


Published in SPIE Proceedings Vol. 7384:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications
Kun Zhang; Xiang-jun Wang; Guang-jun Zhang; Ke-cong Ai, Editor(s)

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