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Proceedings Article

Detection of keystone in imaging spectrometer data

[+] Author Affiliations
Robert A. Neville, Karl Staenz

Natural Resources Canada (Canada)

Lixin Sun

Dendron Resource Surveys Inc. (Canada)

Proc. SPIE 5425, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X, 208 (August 12, 2004); doi:10.1117/12.542806
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From Conference Volume 5425

  • Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X
  • Sylvia S. Shen; Paul E. Lewis
  • Orlando, FL | April 12, 2004

abstract

A procedure has been developed to measure the spatial mis-registration of the bands of imaging spectrometers using data acquired by the sensor in flight. This is done for each across-track pixel and for all bands, thus allowing the measurement of the instrument's 'keystone' and related inter-band spatial shifts. The procedure uses spatial features present in the scene. The inter-band spatial relationship determinations are made by correlating these features as detected by the various bands. Measurements have been made for a number of instruments including the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS), Hyperion, Compact Airborne Spectrographic Imager (casi ), SWIR (Short Wave Infra-Red) Full Spectrum Imager (SFSI), and Aurora. The measurements on AVIRIS data were performed as a test of the procedure; since AVIRIS is a whisk-broom scanner it is expected to be free of keystone. The airborne Aurora, casi , and SFSI and the satellite sensor Hyperion are all pushbroom instruments, exhibiting varying degrees of keystone. The potential impact of keystone upon spectral similarity measures is examined.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Robert A. Neville ; Lixin Sun and Karl Staenz
"Detection of keystone in imaging spectrometer data", Proc. SPIE 5425, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X, 208 (August 12, 2004); doi:10.1117/12.542806; http://dx.doi.org/10.1117/12.542806


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