Spatial and temporal variability of hyperspectral signatures of terrain

Jones, K. F.; Perovich, D. K.; Koenig, G. G.

doi:doi:10.1117/12.777642

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Proceedings / Volume 6966 / Spectral Methodologies and Applications

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Spatial and temporal variability of hyperspectral signatures of terrain

Proc. SPIE 6966, 69660L (2008); doi:10.1117/12.777642

Monday 17 March 2008

Orlando, FL, USA

Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIV

Sylvia S. Shen, Paul E. Lewis

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Abstract

K. F. Jones, D. K. Perovich, and G. G. Koenig

Cold Regions Research and Engineering Lab.

Electromagnetic signatures of terrain exhibit significant spatial heterogeneity on a range of scales as well as considerable temporal variability. A statistical characterization of the spatial heterogeneity and spatial scaling algorithms of terrain electromagnetic signatures are required to extrapolate measurements to larger scales. Basic terrain elements including bare soil, grass, deciduous, and coniferous trees were studied in a quasi-laboratory setting using instrumented test sites in Hanover, NH and Yuma, AZ. Observations were made using a visible and near infrared spectroradiometer (350 - 2500 nm) and hyperspectral camera (400 - 1100 nm). Results are reported illustrating: i) several difference scenes; ii) a terrain scene time series sampled over an annual cycle; and iii) the detection of artifacts in scenes. A principal component analysis indicated that the first three principal components typically explained between 90 and 99% of the variance of the 30 to 40-channel hyperspectral images. Higher order principal components of hyperspectral images are useful for detecting artifacts in scenes.

History

Online Apr 11, 2008

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http://dx.doi.org/10.1117/12.777642

Citation

K. F. Jones, D. K. Perovich and G. G. Koenig, "Spatial and temporal variability of hyperspectral signatures of terrain", Proc. SPIE 6966, 69660L (2008); doi:10.1117/12.777642