12 May 2006 Compressive imaging spectrometers using coded apertures
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Abstract
A spectral imager provides a 3-D data cube in which the spatial information (2-D) of the image is complemented by spectral information (1-D) about each spatial location. Typically, these systems are operated in a fully-determined (or overdetermined) manner so that the measurements can be computationally inverted into a reliable estimate of the source. We propose a notional system design that is highly underdetermined, yet still computationally invertable. This approach relies on recently-developed concepts in compressive sensing. Because the number of required measurements is greatly reduced from traditional designs, the result is a faster and more economical sensor system.
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D. J. Brady, M. E. Gehm, "Compressive imaging spectrometers using coded apertures", Proc. SPIE 6246, Visual Information Processing XV, 62460A (12 May 2006); doi: 10.1117/12.667605; https://doi.org/10.1117/12.667605
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