Superpixel based feature specific sparse representation for spectral-spatial classification of hyperspectral images
Sun, He and Ren, Jinchang and Zhao, Huimin and Yan, Yijun and Zabalza, Jaime and Marshall, Stephen (2019) Superpixel based feature specific sparse representation for spectral-spatial classification of hyperspectral images. Remote Sensing, 11 (5). 536. ISSN 2072-4292 (https://doi.org/10.3390/rs11050536)
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Abstract
To improve the performance of the sparse representation classification (SRC), we propose a superpixel-based feature specific sparse representation framework (SPFS-SRC) for spectral-spatial classification of hyperspectral images (HSI) at superpixel level. First, the HSI is divided into different spatial regions, each region is shape- and size-adapted and considered as a superpixel. For each superpixel, it contains a number of pixels with similar spectral characteristic. Since the utilization of multiple features in HSI classification has been proved to be an effective strategy, we have generated both spatial and spectral features for each superpixel. By assuming that all the pixels in a superpixel belongs to one certain class, a kernel SRC is introduced to the classification of HSI. In the SRC framework, we have employed a metric learning strategy to exploit the commonalities of different features. Experimental results on two popular HSI datasets have demonstrated the efficacy of our proposed methodology.
ORCID iDs
Sun, He, Ren, Jinchang ORCID: https://orcid.org/0000-0001-6116-3194, Zhao, Huimin, Yan, Yijun ORCID: https://orcid.org/0000-0003-0224-0078, Zabalza, Jaime ORCID: https://orcid.org/0000-0002-0634-1725 and Marshall, Stephen ORCID: https://orcid.org/0000-0001-7079-5628;-
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Item type: Article ID code: 67583 Dates: DateEvent5 March 2019Published27 February 2019AcceptedSubjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 16 Apr 2019 14:34 Last modified: 04 Oct 2024 00:30 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/67583