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Effects of optical aberration on chromotomographic image reconstruction

机译：光学像差对色谱图像重建的影响

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摘要

Chromotomography is a form of hyperspectral imaging that utilizes a spinning diffractive element to resolve a rapidly evolving scene. The system captures both spatial dimensions and the spectral dimension at the same time. Advanced algorithms take the recorded dispersed images and use them to construct the data cube in which each reconstructed image is the recorded scene at a specific wavelength. A simulation tool has been developed which uses Zemax to accurately trace rays through real or proposed optical systems. The simulation is used here to explore the limitations of tomographic reconstruction in both idealized and aberrated imaging systems. Results of the study show the accuracy of reconstructed images depends upon the content of the original target scene, the number of projections measured, and the angle through which the prism is rotated. For cases studied here, 20 projections are sufficient to achieve image quality 99.5±1% of the max value. Reconstructed image quality degrades with aberrations, but no worse than equivalent conventional imagers.
机译：层析成像是一种高光谱成像的形式，它利用旋转衍射元素来解决快速演变的场景。该系统同时捕获空间维和光谱维。先进的算法可以获取记录的分散图像，并使用它们来构建数据立方体，其中每个重建图像都是特定波长下的记录场景。已经开发出一种仿真工具，该仿真工具使用Zemax来精确跟踪通过实际或建议的光学系统发出的光线。在此使用仿真来探索理想化和像差成像系统中层析成像重建的局限性。研究结果表明，重建图像的精度取决于原始目标场景的内容，测量的投影数量以及棱镜旋转的角度。对于此处研究的情况，20个投影足以获得最大值的99.5±1％的图像质量。重建的图像质量会随着像差而降低，但不比等效的传统成像仪差。

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