Computer simulation for digital refocusing imager based on light field photography

Zhi-liang Zhou; Yan Yuan; Bin Xiangli

doi:10.1117/12.836679

6 August 2009 Computer simulation for digital refocusing imager based on light field photography

Zhi-liang Zhou, Yan Yuan, Bin Xiangli

Proceedings Volume 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications; 73842W (2009) https://doi.org/10.1117/12.836679
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

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.

Citation Download Citation

Zhi-liang Zhou, Yan Yuan, and Bin Xiangli "Computer simulation for digital refocusing imager based on light field photography", Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 73842W (6 August 2009); https://doi.org/10.1117/12.836679

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