An analysis task comparison of uncorrected vs. geo-registered airborne hyperspectral imagery

Yihang Sun; John Kerekes

doi:10.1117/12.2177688

21 May 2015 An analysis task comparison of uncorrected vs. geo-registered airborne hyperspectral imagery

Yihang Sun, John Kerekes

Proceedings Volume 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI; 94720I (2015) https://doi.org/10.1117/12.2177688
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

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.

Citation Download Citation

Yihang Sun and 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); https://doi.org/10.1117/12.2177688

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