Remote Sensing Applications and Decision Support

Hyperspectral image spectral–spatial classification using local tensor discriminant feature extraction

[+] Author Affiliations
Di Wu, Ye Zhang, Sheng Wei Zhong, Guang Jiao Zhou

Harbin Institute of Technology, School of Electronics and Information Technology, Xidazhi Street, Nangang District, Harbin 15000, China

J. Appl. Remote Sens. 10(4), 046015 (Nov 23, 2016). doi:10.1117/1.JRS.10.046015
History: Received July 31, 2016; Accepted November 1, 2016
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Abstract.  Classification of real-world remote sensing images is a challenging task because of complex spectral–spatial information with high-dimensional feature vectors. Most of the traditional classification approaches directly treat data as vectors, which usually results in a small sample size problem and abundant redundant information; thus, they inevitably degrade the performance of the classifier. To overcome the drawbacks, we take advantage of the benefits of local scatters and tensor representation and propose a framework for hyperspectral image (HSI) classification through combining local tensor discriminant analysis (LTDA) with spectral–spatial feature extraction. First, we use a well-known spectral–spatial feature extraction approach to extract abundant spectral–spatial features as feature tensors. Then, based on class label information, LTDA is used to eliminate redundant information and to extract discriminant feature tensors for the subsequent classification. Two real HSIs are used as experimental datasets. The obtained results indicate that the proposed method exhibits good performance, while using a small number of training samples.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Di Wu ; Ye Zhang ; Sheng Wei Zhong and Guang Jiao Zhou
"Hyperspectral image spectral–spatial classification using local tensor discriminant feature extraction", J. Appl. Remote Sens. 10(4), 046015 (Nov 23, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.046015


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