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A Novel Information Theoretic Cost Measure for Filtering Based Feature Selection from Hyperspectral Images

  • Conference paper
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Computer Vision and Image Processing (CVIP 2019)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 1147))

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Abstract

In this paper, we address the supervised dimensionality reduction problem for improved hyperspectral image (HSI) classification. In particular, we design a novel information theoretic ranking measure and further propose a greedy strategy that provides a more principled way of ranking the features. Note that the use of information theory is prevalent in the area of filtering based dimensionality reduction. However, the existing ranking measures in this regard are predominantly based on the notion of enforcing non-redundancy among the selected features while simultaneously ensuring relevance. In the process, it is not considered whether the selected feature dimensions are representatives of the discarded ones. However, those abandoned dimensions may contain subtle information regarding some of the land-cover classes. Inspired by this analogy, we propose a new ranking function in this paper which generates an ordering of the dimensions based on non-redundancy, relevancy while ensuring that the selected feature dimensions are representatives of all the original feature dimensions. We subsequently propose a graph-based greedy algorithm for feature selection in this regard. Experimental results on widely studied HSI datasets confirm the superiority of the proposed method compared to the existing information theoretic feature selection strategies.

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Correspondence to Vikas Kookna .

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Kookna, V., Singh, A.K., Raj, A., Banerjee, B. (2020). A Novel Information Theoretic Cost Measure for Filtering Based Feature Selection from Hyperspectral Images. In: Nain, N., Vipparthi, S., Raman, B. (eds) Computer Vision and Image Processing. CVIP 2019. Communications in Computer and Information Science, vol 1147. Springer, Singapore. https://doi.org/10.1007/978-981-15-4015-8_10

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  • DOI: https://doi.org/10.1007/978-981-15-4015-8_10

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-4014-1

  • Online ISBN: 978-981-15-4015-8

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