摘要
Hyperspectral images contain extremely rich spectral information that offer great potential to discrimi- nate between various land cover classes. However, these images are usually composed of tens or hundreds of spectrally close bands, which result in high redundancy and great amount of computation time in hyperspectral classification. Furthermore, in the presence of mixed coverage pixels, crisp classifiers produced errors, omission and commission. This paper presents a mutual informa- tion-Dempster-Shafer system through an ensemble classi- fication approach for classification of hyperspectral data. First, mutual information is applied to split data into a few independent partitions to Then, a fuzzy maximum overcome high dimensionality. likelihood classifies each band subset. Finally, Dempster-Shafer is applied to fuse the results of the fuzzy classifiers. In order to assess the proposed method, a crisp ensemble system based on a support vector machine as the crisp classifier and weighted majority voting as the crisp fusion method are applied on hyperspectral data. Furthermore, a dimension reduction system is utilized to assess the effectiveness of mutual information band splitting of the proposed method. The proposed methodology provides interesting conclusions on the effectiveness and potentiality of mutual information- Dempster-Shafer based classification ofhyperspectral data.
Hyperspectral images contain extremely rich spectral information that offer great potential to discrimi- nate between various land cover classes. However, these images are usually composed of tens or hundreds of spectrally close bands, which result in high redundancy and great amount of computation time in hyperspectral classification. Furthermore, in the presence of mixed coverage pixels, crisp classifiers produced errors, omission and commission. This paper presents a mutual informa- tion-Dempster-Shafer system through an ensemble classi- fication approach for classification of hyperspectral data. First, mutual information is applied to split data into a few independent partitions to Then, a fuzzy maximum overcome high dimensionality. likelihood classifies each band subset. Finally, Dempster-Shafer is applied to fuse the results of the fuzzy classifiers. In order to assess the proposed method, a crisp ensemble system based on a support vector machine as the crisp classifier and weighted majority voting as the crisp fusion method are applied on hyperspectral data. Furthermore, a dimension reduction system is utilized to assess the effectiveness of mutual information band splitting of the proposed method. The proposed methodology provides interesting conclusions on the effectiveness and potentiality of mutual information- Dempster-Shafer based classification ofhyperspectral data.
