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Proceedings Paper

Combined model- and image-based procedure for calibrating multitemporal sequences of TM and ETM+ imagery to absolute reflectance values
Author(s): Luigi John Renzullo; Brendan T. McGann; Mervyn J. Lynch
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Paper Abstract

An extension to the like-value procedure is proposed for calibrating multitemporal sequences of TM and ETM+ imagery to absolute reflectance values. The procedure described differs from the conventional approach by using a calibrated reference image and constraining the line of best fit to pass through the modeled digital number (DN) for a target with zero surface flectance. It was demonstrated that the resulting lines calibrate image DNs to surface reflectance values by simultaneously correcting for the additive and multiplicative components of the sensor output that result from changes in sensor response, solar position and atmospheric effects over time. In a comparison to reference image reflectances, the precision of the procedure was shown to be very good for the visible spectral bands but poorer for the infrared bands. Generally errors in retrieval were within the range considered acceptable for most practical applications. For the data used in the analysis, the procedure was shown to be insensitive to uncertainty in input parameters required to model path DN.

Paper Details

Date Published: 11 June 2003
PDF: 12 pages
Proc. SPIE 4898, Image Processing and Pattern Recognition in Remote Sensing, (11 June 2003); doi: 10.1117/12.472689
Show Author Affiliations
Luigi John Renzullo, Curtin Univ. of Technology (Australia)
Brendan T. McGann, Curtin Univ. of Technology (Australia)
Mervyn J. Lynch, Curtin Univ. of Technology (Australia)


Published in SPIE Proceedings Vol. 4898:
Image Processing and Pattern Recognition in Remote Sensing
Stephen G. Ungar; Shiyi Mao; Yoshifumi Yasuoka, Editor(s)

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