ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2016, Vol. 13, No. 5, pp. 192-201

Radiometric correction for topography-induced distortions in land cover reflectance derived from satellite data

V.A. Egorov 1 , S.A. Bartalev 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 19.10.2016
DOI: 10.21046/2070-7401-2016-13-5-192-201
The application of remote sensing techniques for mapping and monitoring of vegetation in regions with rugged terrain requires compensation of radiometric distortions in the surface reflectance measurements. The growing of surface reflectance variability due to topographical effects is an additional source of errors, resulting in lower accuracy of land cover mapping, its change detection and characteristics evaluation. The topographic normalization aims to transform the surface reflectance measurements of sloped earth's surface to its values at the potentially inherent horizontal flat position in order to reduce differences caused by slopes orientation and steepness. In this paper we propose a new method of topographic normalization of satellite images based on the Minnaert model with adaptive parameters fitting depending on the slope steepness. The proposed method was applied to satellite remote sensing data acquired by Proba-V instrument over Primorye Region. The paper presents the proposed method and experimental results of its evaluation.
Keywords: remote sensing, topographical normalization, Minnaert model, Proba-V
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