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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 1, pp. 46-57

Development of the method of spectral-spatial classification of hyperspectral images based on local multifractal analysis and the support vector machine

Dm.V. Uchaev 1 
1 Moscow State University of Geodesy and Cartography, Moscow, Russia
Accepted: 08.11.2018
DOI: 10.21046/2070-7401-2019-16-1-46-57
Today, improving the quality of classification of hyperspectral images is one of the main problems of the theory and practice of hyperspectral image processing. One way to solve this problem is to involve spatial (contextual) information in the process of classification. In the paper, a new method of spectral-spatial classification of hyperspectral images is proposed. In the method, the multifractal characteristics and values of the Choquet capacity, calculated using local multifractal analysis, are used as spatial features. The paper identifies three groups of multifractal characteristics that can be used as classification features: global multifractal characteristics calculated for relatively large pixel neighborhoods; characteristics derived from global multifractal characteristics and local multifractal characteristics. The combination of spatial features with spectral information in the proposed method is performed using the support vector machine classifier. Experiments are carried out with two hyperspectral images of Pavia University and Salinas, having different spatial resolution. Experimental results demonstrate that the proposed method outperforms similar methods in terms of the overall accuracy and the kappa statistic.
Keywords: hyperspectral image, support vector machine, Holder exponent, multifractal
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