Research Papers

Stochastic modeling of physically derived signature spaces

[+] Author Affiliations
Emmett J. Ientilucci

Digital Imaging and Remote Sensing Laboratory, Rochester Institute of Technology, 54 Lomb Memorial Drive, Rochester, NY 14623

Peter Bajorski

Graduate Statistics Department, Rochester Institute of Technology, 98 Lomb Memorial Drive, Rochester, NY 14623

J. Appl. Remote Sens. 2(1), 023532 (August 13, 2008). doi:10.1117/1.2977723
History: Received April 27, 2007; Revised June 12, 2008; Accepted August 7, 2008; August 13, 2008; Online August 13, 2008
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Abstract

Traditional approaches to hyperspectral target detection involve the application of detection algorithms to atmospherically compensated imagery. Rather than compensate the imagery, a more recent approach uses physical models to generate target subspaces. These radiance subspaces can then be used in an appropriate detection scheme to identify potential targets. The generation of these subspaces involves some a priori knowledge of data acquisition parameters, scene and atmospheric conditions, and possible calibration errors. Variation is allowed in the model since some parameters are difficult to know accurately. Each vector in the subspace is the result of a MODTRAN simulation coupled with a physical model. Generation of large target spaces can be computationally burdensome. This paper explores the use of statistical methods to describe such target signature spaces. The statistically modeled spaces can then be used to generate arbitrary radiance vectors to form a sub-space with potential "real-time" applications. Statistically modeled target subspaces, using limited training samples, were found to accurately resemble MODTRAN derived radiance vectors.

© 2008 Society of Photo-Optical Instrumentation Engineers

Citation

Emmett J. Ientilucci and Peter Bajorski
"Stochastic modeling of physically derived signature spaces", J. Appl. Remote Sens. 2(1), 023532 (August 13, 2008). ; http://dx.doi.org/10.1117/1.2977723


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