Video rate spectral imaging using a coded aperture snapshot spectral imager.
Journal Article (Journal Article)
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.
Full Text
Duke Authors
Cited Authors
- Wagadarikar, AA; Pitsianis, NP; Sun, X; Brady, DJ
Published Date
- April 2009
Published In
Volume / Issue
- 17 / 8
Start / End Page
- 6368 - 6388
PubMed ID
- 19365462
Electronic International Standard Serial Number (EISSN)
- 1094-4087
International Standard Serial Number (ISSN)
- 1094-4087
Digital Object Identifier (DOI)
- 10.1364/oe.17.006368
Language
- eng