Computer modeling and simulation of light field camera and digital refocusing with attenuating mask

Xiu-bao Zhang; Yan Yuan; Zhi-liang Zhou; Cheng-ming Sun

doi:10.1117/12.836543

6 August 2009 Computer modeling and simulation of light field camera and digital refocusing with attenuating mask

Xiu-bao Zhang, Yan Yuan, Zhi-liang Zhou, Cheng-ming Sun

Proceedings Volume 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications; 73842O (2009) https://doi.org/10.1117/12.836543
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

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.

Citation Download Citation

Xiu-bao Zhang, Yan Yuan, Zhi-liang Zhou, and Cheng-ming Sun "Computer modeling and simulation of light field camera and digital refocusing with attenuating mask", Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 73842O (6 August 2009); https://doi.org/10.1117/12.836543

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