Video rate spectral imaging using a coded aperture snapshot spectral imager.
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.
Duke Scholars
Altmetric Attention Stats
Dimensions Citation Stats
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Video Recording
- Spectrum Analysis
- Sensitivity and Specificity
- Reproducibility of Results
- Optics
- Image Interpretation, Computer-Assisted
- Equipment Failure Analysis
- Equipment Design
- Computer-Aided Design
- 5102 Atomic, molecular and optical physics
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Video Recording
- Spectrum Analysis
- Sensitivity and Specificity
- Reproducibility of Results
- Optics
- Image Interpretation, Computer-Assisted
- Equipment Failure Analysis
- Equipment Design
- Computer-Aided Design
- 5102 Atomic, molecular and optical physics