21 May 2015 An analysis task comparison of uncorrected vs. geo-registered airborne hyperspectral imagery
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Abstract
Geo-registration is the task of assigning geospatial coordinates to the pixels of an image and placing them in a geographic coordinate system. However, the process of geo-registration can impair the quality of the image. This paper studies this topic by applying a comparison methodology to uncorrected and geo-registered airborne hyperspectral images obtained from the RIT SHARE 2012 data set. The uncorrected image was analyzed directly as collected by the sensor without being treated, while the geo-registered image was corrected using the nearest neighbor resampling approach. A comparison of performance was done for the analysis tasks of spectral unmixing and subpixel target detection, which can represent a measure of utility. The comparison demonstrates that the geo-registration process can affect the utility of hyperspectral imagery to a limited extent.
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Yihang Sun, John Kerekes, "An analysis task comparison of uncorrected vs. geo-registered airborne hyperspectral imagery", Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI, 94720I (21 May 2015); doi: 10.1117/12.2177688; https://doi.org/10.1117/12.2177688
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