Title :
Exploiting MODTRAN radiation transport for atmospheric correction: The FLAASH algorithm
Author :
Berk, A. ; Adler-Golden, S.M. ; Ratkowski, A.J. ; Felde, G.W. ; Anderson, G.P. ; Hoke, M.L. ; Cooley, T. ; Chetwynd, J.H. ; Gardner, J.A. ; Matthew, M.W. ; Bernstein, Lawrence S. ; Acharya, P.K. ; Miller, D. ; Lewis, P.
Author_Institution :
Spectral Sci., Inc, Burlington, MA, USA
Abstract :
Terrain categorization and target detection algorithms applied to hyperspectral imagery (HSI) typically operate on the measured reflectance (of sun and sky illumination) by an object or scene. Since the reflectance is a non-dimensional ratio, the reflectance by an object is nominally not affected by variations in lighting conditions. Atmospheric correction (referred to as atmospheric compensation, characterization, etc.) algorithms (ACAs) are used in applications of remotely sensed HSI data to correct for the effects of atmospheric propagation on measurements acquired by air and space-borne systems. The fast line-of-sight atmospheric analysis of spectral hypercubes (FLAASH) algorithm is an ACA created for HSI applications in the visible through shortwave infrared (Vis-SWIR) spectral regime. FLAASH derives its ´physics-based´ mathematics from MODTRAN4.
Keywords :
geophysical signal processing; image processing; image sensors; infrared detectors; radiative transfer; reflectivity; remote sensing; sensor fusion; ultraviolet detectors; FLAASH algorithm; MODTRAN4 radiation transport; airborne systems; atmospheric correction algorithms; atmospheric propagation correction; fast line-of-sight atmospheric analysis of spectral hypercubes algorithm; hyperspectral imagery; physics-based mathematics; reflectance; remotely sensed data; space-borne systems; target detection algorithms; terrain categorization algorithms; visible through shortwave IR spectral regime; Atmospheric measurements; Hyperspectral imaging; Hyperspectral sensors; Layout; Lighting; Object detection; Optical propagation; Reflectivity; Spectral analysis; Sun;
Conference_Titel :
Information Fusion, 2002. Proceedings of the Fifth International Conference on
Conference_Location :
Annapolis, MD, USA
Print_ISBN :
0-9721844-1-4
DOI :
10.1109/ICIF.2002.1020888
