28 November 2019 Hyperspectral image classification using nearest regularized subspace with Manhattan distance
Sarwar Shah Khan, Qiong Ran, Muzammil Khan, Mengmeng Zhang
Author Affiliations +
Abstract

Nearest regularized subspace (NRS) has been recently proposed for hyperspectral image (HSI) classification. The NRS outperforms both collaborative representation classification and sparse representation-based techniques because the NRS makes use of the distance-weighted Tikhonov regularization to ensure appropriate representation from similar samples within-class. However, typical NRS only considers Euclidean distance, which may be suboptimal to resolve the problem of sensitivity in the absolute magnitude of a spectrum. An NRS-Manhattan distance (MD) strategy is proposed for HSI classification. The proposed distance metric controls over magnitude change and emphasizes the shape of the spectrum. Furthermore, the MD metric uses the entire information of the spectral bands in full dimensionality of the HSI pixels, which makes NRS-MD a more efficient pixelwise classifier. Validations are done with several hyperspectral data, i.e., Indian Pines, Botswana, Salinas, and Houston. Results demonstrate that the proposed NRS-MD is superior to other state-of-the-art methods.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 1931-3195/2019/$28.00 © 2019 SPIE
Sarwar Shah Khan, Qiong Ran, Muzammil Khan, and Mengmeng Zhang "Hyperspectral image classification using nearest regularized subspace with Manhattan distance," Journal of Applied Remote Sensing 14(3), 032604 (28 November 2019). https://doi.org/10.1117/1.JRS.14.032604
Received: 29 August 2019; Accepted: 14 November 2019; Published: 28 November 2019
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Cited by 6 scholarly publications.
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KEYWORDS
Image classification

Hyperspectral imaging

Error control coding

Distance measurement

Algorithm development

Associative arrays

Sensors

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