Mr. Alexander Dementev Profile

Alexander Dementev

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Proceedings Article | 5 October 2017 Paper

Peculiarities of use of ECOC and AdaBoost based classifiers for thematic processing of hyperspectral data

A. Dementev, E. Dmitriev, V. Kozoderov, V. Egorov

Proceedings Volume 10428, 104281M (2017) https://doi.org/10.1117/12.2278074

KEYWORDS: Hyperspectral imaging, Detection and tracking algorithms, Binary data, Image processing, Algorithms, Data processing, Pattern recognition, Image classification, Vegetation, Aerospace engineering

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Hyperspectral imaging is up-to-date promising technology widely applied for the accurate thematic mapping. The presence of a large number of narrow survey channels allows us to use subtle differences in spectral characteristics of objects and to make a more detailed classification than in the case of using standard multispectral data. The difficulties encountered in the processing of hyperspectral images are usually associated with the redundancy of spectral information which leads to the problem of the curse of dimensionality. Methods currently used for recognizing objects on multispectral and hyperspectral images are usually based on standard base supervised classification algorithms of various complexity. Accuracy of these algorithms can be significantly different depending on considered classification tasks. In this paper we study the performance of ensemble classification methods for the problem of classification of the forest vegetation. Error correcting output codes and boosting are tested on artificial data and real hyperspectral images. It is demonstrates, that boosting gives more significant improvement when used with simple base classifiers. The accuracy in this case in comparable the error correcting output code (ECOC) classifier with Gaussian kernel SVM base algorithm. However the necessity of boosting ECOC with Gaussian kernel SVM is questionable. It is demonstrated, that selected ensemble classifiers allow us to recognize forest species with high enough accuracy which can be compared with ground-based forest inventory data.

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