期刊
OPTICS EXPRESS
卷 17, 期 8, 页码 6368-6388出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.006368
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- AFOSR [FA9550-08-1-0151]
- Natural Sciences and Engineering Research Council (NSERC) of Canada
We have previously reported on coded aperture snapshot spectral imagers (CASSI) that can capture a full frame spectral image in a snapshot. Here we describe the use of CASSI for spectral imaging of a dynamic scene at video rate. We describe significant advances in the design of the optical system, system calibration procedures and reconstruction method. The new optical system uses a double Amici prism to achieve an in-line, direct view configuration, resulting in a substantial improvement in image quality. We describe NeAREst, an algorithm for estimating the instantaneous three-dimensional spatio-spectral data cube from CASSI's two-dimensional array of encoded and compressed measurements. We utilize CASSI's snapshot ability to demonstrate a spectral image video of multi-colored candles with live flames captured at 30 frames per second. (C) 2009 Optical Society of America
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