Design framework for a spectral mask for a plenoptic camera

Kathrin Berkner; Sapna A. Shroff

doi:10.1117/12.910335

24 January 2012 Design framework for a spectral mask for a plenoptic camera

Kathrin Berkner, Sapna A. Shroff

Proceedings Volume 8299, Digital Photography VIII; 82990A (2012) https://doi.org/10.1117/12.910335
Event: IS&T/SPIE Electronic Imaging, 2012, Burlingame, California, United States

Abstract

Plenoptic cameras are designed to capture different combinations of light rays from a scene, sampling its lightfield. Such camera designs capturing directional ray information enable applications such as digital refocusing, rotation, or depth estimation. Only few address capturing spectral information of the scene. It has been demonstrated that by modifying a plenoptic camera with a filter array containing different spectral filters inserted in the pupil plane of the main lens, sampling of the spectral dimension of the plenoptic function is performed. As a result, the plenoptic camera is turned into a single-snapshot multispectral imaging system that trades-off spatial with spectral information captured with a single sensor. Little work has been performed so far on analyzing diffraction effects and aberrations of the optical system on the performance of the spectral imager. In this paper we demonstrate simulation of a spectrally-coded plenoptic camera optical system via wave propagation analysis, evaluate quality of the spectral measurements captured at the detector plane, and demonstrate opportunities for optimization of the spectral mask for a few sample applications.

Citation Download Citation

Kathrin Berkner and Sapna A. Shroff "Design framework for a spectral mask for a plenoptic camera", Proc. SPIE 8299, Digital Photography VIII, 82990A (24 January 2012); https://doi.org/10.1117/12.910335

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KEYWORDS

Sensors

Optical filters

Cameras

Microlens

Wave propagation

Diffraction

Imaging systems

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