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Proceedings Paper

Computer simulation for digital refocusing imager based on light field photography
Author(s): Zhi-liang Zhou; Yan Yuan; Bin Xiangli
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Paper Abstract

This paper presents a computer simulation of light field photography that records the light field by inserting a microlens array in a conventional camera. A computational model is configured to emulate how the 4D light field is distributed in the camera and then captured on a 2D sensor. Based on the recorded light field, refocused images are calculated by spatial integration at different depths. In the Fourier domain, a refocused photograph can be obtained by taking an appropriate 2D slice in the 4D light field. Due to this theorem, another refocusing algorithm in the Fourier domain is particularly explored in this paper. After reconstructing a focal stack of images at all depths in the scene, a photograph with extended depth of field can be calculated by wavelet based image fusion methods.

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, 73842W (6 August 2009); doi: 10.1117/12.836679
Show Author Affiliations
Zhi-liang Zhou, Univ. of Science and Technology of China (China)
Academy of Opto-electronics (China)
Yan Yuan, Beihang Univ. (China)
Bin Xiangli, Univ. of Science and Technology of China (China)
Academy of Opto-electronics (China)


Published in SPIE Proceedings Vol. 7384:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications

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