Hyperspectral Image Classification via Fusing Correlation Coefficient and Joint Sparse Representation
Hyperspectral Image Classification via Fusing Correlation Coefficient and Joint Sparse Representation
复制标题
通过融合相关系数和联合稀疏表示的高光谱图像分类
DOI:
10.1109/lgrs.2017.2787338
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发表时间:
2018-01
影响因子:
4.8
通讯作者:
Wu Jianhui
中科院分区:
文献类型:
--
作者:
Tu Bing;Zhang Xiaofei;Kang Xudong;Zhang Guoyun;Wang Jinping;Wu Jianhui
The joint sparse representation (JSR)-based classifier assumes that pixels in a local window can be jointly and sparsely represented by a dictionary constructed by the training samples. The class label of each pixel can be decided according to the representation residual. However, once the local window of each pixel includes pixels from different classes, the performance of the JSR classifier may be seriously decreased. Since correlation coefficient (CC) is able to measure the spectral similarity among different pixels efficiently, this letter proposes a new classification method via fusing CC and JSR, which attempts to use the within-class similarity between training and test samples while decreasing the between-class interference. First, the CCs among the training and test samples are calculated. Then, the JSR-based classifier is used to obtain the representation residuals of different pixels. Finally, a regularization parameter $\lambda $ is introduced to achieve the balance between the JSR and the CC. Experimental results obtained on the Indian Pines data set demonstrate the competitive performance of the proposed approach with respect to other widely used classifiers.
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