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Design framework for a spectral mask for a plenoptic camera

机译：全光相机光谱掩模的设计框架

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摘要

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.
机译：全光相机旨在捕获场景中光线的不同组合，并对场景的光场进行采样。这种捕获方向射线信息的相机设计可实现诸如数字重新聚焦，旋转或深度估计之类的应用。仅少数地址捕获场景的光谱信息。已经证明，通过用在主透镜的光瞳平面中插入包含不同光谱滤光器的滤光器阵列来修改全光照相机，可以进行全光功能的光谱尺寸的采样。结果，全光摄像机变成了单快照多光谱成像系统，该系统可以权衡空间与使用单个传感器捕获的光谱信息。迄今为止，在分析衍射效应和光学系统的像差对光谱成像仪性能的影响方面，几乎没有做过任何工作。在本文中，我们通过波传播分析演示了光谱编码的全光相机光学系统的仿真，评估了在探测器平面上捕获的光谱测量的质量，并展示了一些样品应用中光谱掩模的优化机会。

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