A novel method for illumination suppression in hyperspectral images

Edward A. Ashton; Brian D. Wemett; Robert A. Leathers; Trijntje V. Downes

doi:10.1117/12.777153

14 April 2008 A novel method for illumination suppression in hyperspectral images

Edward A. Ashton, Brian D. Wemett, Robert A. Leathers, Trijntje V. Downes

Proceedings Volume 6966, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIV; 69660C (2008) https://doi.org/10.1117/12.777153
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

We have proposed a new method for illumination suppression in hyperspectral image data. This involves transforming the data into a hyperspherical coordinate system, segmenting the data cloud into a large number of classes according to the radius dimension, and then demeaning each class, thereby eliminating the distortion introduced by differential absorption in shaded regions. This method was evaluated against two other illumination-suppression methods using two metrics: visual assessment and spectral similarity of similar materials in shaded and fully illuminated regions. The proposed method shows markedly superior performance by each of these metrics.

Citation Download Citation

Edward A. Ashton, Brian D. Wemett, Robert A. Leathers, and Trijntje V. Downes "A novel method for illumination suppression in hyperspectral images", Proc. SPIE 6966, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIV, 69660C (14 April 2008); https://doi.org/10.1117/12.777153

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