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13 June 2014 Effects of optical aberration on chromotomographic reconstruction
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Abstract
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.
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Ryan Tervo, Michael Hawks, Glen Perram, and Matthew Fickus "Effects of optical aberration on chromotomographic reconstruction", Proc. SPIE 9088, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XX, 908817 (13 June 2014); https://doi.org/10.1117/12.2050353
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