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Proceedings Paper

Fast and robust pushbroom hyperspectral imaging via DMD-based scanning
Author(s): Reza Arablouei; Ethan Goan; Stephen Gensemer; Branislav Kusy
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Paper Abstract

We describe a new pushbroom hyperspectral imaging device that has no macro moving part. The main components of the proposed hyperspectral imager are a digital micromirror device (DMD), a CMOS image sensor with no filter as the spectral sensor, a CMOS color (RGB) image sensor as the auxiliary image sensor, and a diffraction grating. Using the image sensor pair, the device can simultaneously capture hyperspectral data as well as RGB images of the scene. The RGB images captured by the auxiliary image sensor can facilitate geometric co-registration of the hyperspectral image slices captured by the spectral sensor. In addition, the information discernible from the RGB images can lead to capturing the spectral data of only the regions of interest within the scene. The proposed hyperspectral imaging architecture is costeffective, fast, and robust. It also enables a trade-off between resolution and speed. We have built an initial prototype based on the proposed design. The prototype can capture a hyperspectral image datacube with a spatial resolution of 400×400 pixels and a spectral resolution of 500 bands in less than thirty seconds.

Paper Details

Date Published: 27 September 2016
PDF: 11 pages
Proc. SPIE 9948, Novel Optical Systems Design and Optimization XIX, 99480A (27 September 2016); doi: 10.1117/12.2239107
Show Author Affiliations
Reza Arablouei, Commonwealth Scientific and Industrial Research Organisation (Australia)
Ethan Goan, Commonwealth Scientific and Industrial Research Organisation (Australia)
Stephen Gensemer, Commonwealth Scientific and Industrial Research Organisation (Australia)
Branislav Kusy, Commonwealth Scientific and Industrial Research Organisation (Australia)


Published in SPIE Proceedings Vol. 9948:
Novel Optical Systems Design and Optimization XIX
Arthur J. Davis; Cornelius F. Hahlweg; Joseph R. Mulley, Editor(s)

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