Target-driven selection of lossy hyperspectral image compression ratios

Jason R. Kaufman; Christopher D. McGuinness

doi:10.1117/12.2262920

5 May 2017 Target-driven selection of lossy hyperspectral image compression ratios

Jason R. Kaufman, Christopher D. McGuinness

Proceedings Volume 10198, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIII; 1019813 (2017) https://doi.org/10.1117/12.2262920
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

Abstract

A common problem in applying lossy compression to a hyperspectral image is predicting its effect on spectral target detection performance. Recent work has shown that light amounts of lossy compression can remove noise in hyperspectral imagery that would otherwise bias a covariance-based spectral target detection algorithm’s background-normalized response to target samples. However, the detection performance of such an algorithm is a function of both the specific target of interest as well as the background, among other factors, and therefore sometimes lossy compression operating at a particular compression ratio (CR) will not negatively affect the detection of one target, while it will negatively affect the detection of another. To account for the variability in this behavior, we have developed a target-centric metric that guides the selection of a lossy compression algorithm’s CR without knowledge of whether or not the targets of interest are present in an image. Further, we show that this metric is correlated with the adaptive coherence estimator’s (ACE’s) signal to clutter ratio when targets are present in an image.

Citation Download Citation

Jason R. Kaufman and Christopher D. McGuinness "Target-driven selection of lossy hyperspectral image compression ratios", Proc. SPIE 10198, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIII, 1019813 (5 May 2017); https://doi.org/10.1117/12.2262920

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