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Proceedings Paper

Techniques for removing odd/even detector noise from pushbroom scanners with large linear arrays
Author(s): Dennis L. Helder; Michael Choate
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Paper Abstract

Multispectral imaging instruments are often built in a pushbroom scanner configuration with focal planes consisting of large linear arrays containing up to several thousand detectors. Design considerations of such arrays often favor arrangements such that all even numbered detector elements are processed along a path that differs from all odd numbered detector elements. this can cause instrument-induced artifacts in the resulting imagery. Two techniques have been developed that attempt to attenuate this type of artifact. One is based on modeling the artifact as differences in detector bias. These differences are estimated in the spatial domain and corrections are applied. The second approach takes advantange of a convenient wavelet decomposition of the iamge that effectively isolates the artifact from image information. After appropriate filtering in wavelet space, artifacts in the reconstructed image are significantly reduces. These techniques have been applied to SPOT imagery with encouraging results.

Paper Details

Date Published: 8 July 1994
PDF: 10 pages
Proc. SPIE 2231, Algorithms for Multispectral and Hyperspectral Imagery, (8 July 1994); doi: 10.1117/12.179785
Show Author Affiliations
Dennis L. Helder, South Dakota State Univ. (United States)
Michael Choate, U.S. Geological Survey (United States)

Published in SPIE Proceedings Vol. 2231:
Algorithms for Multispectral and Hyperspectral Imagery
A. Evan Iverson, Editor(s)

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