Classification of hyperspectral images by enhancing absorption bands in spectral dimension

Delian Liu; Liang Han; Jingguo Zong; Shaoze Zhang

doi:10.1117/12.978168

15 October 2012 Classification of hyperspectral images by enhancing absorption bands in spectral dimension

Delian Liu, Liang Han, Jingguo Zong, Shaoze Zhang

Proceedings Volume 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy; 84192R (2012) https://doi.org/10.1117/12.978168
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

The spectral signatures in most hyperspectral classification approaches are generally treated as random vectors, which is inappropriate in denoting their typical physical characteristics, such as central wavelengths, widths, and depths of absorption bands. In this paper, we present a new classification approach by enhancing the absorption bands of spectral signatures to boost their physical information. Firstly, an analysis is made of the characteristics of absorption bands of spectral signatures. Next, an absorption bands enhancing approach is proposed based on the discussion of the approach of fusing spectral signatures and their derivative. Finally, the proposed approach is applied on two real hyperspectral subimages. The experimental results show that our proposed approach can significantly enhance the differences of spectral signatures of a hyperspectral images. And thus can improve the classification performance of hyperspectral images.

Citation Download Citation

Delian Liu, Liang Han, Jingguo Zong, and Shaoze Zhang "Classification of hyperspectral images by enhancing absorption bands in spectral dimension", Proc. SPIE 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy, 84192R (15 October 2012); https://doi.org/10.1117/12.978168

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KEYWORDS

Absorption

Hyperspectral imaging

Image classification

Scene classification

Sensors

Principal component analysis

Mid-IR

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