Abstract
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.
Original language | English (US) |
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Pages (from-to) | 6368-6388 |
Number of pages | 21 |
Journal | Optics Express |
Volume | 17 |
Issue number | 8 |
DOIs | |
State | Published - Apr 13 2009 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics