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Proceedings Paper

Jointed endmember extraction algorithm and hyperspectral unmixing analysis
Author(s): Hongjun Su; Yehua Sheng; Yongning Wen
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Paper Abstract

This paper presents a semi-automatic jointed algorithm to extract endmember (pure pixel) and feature spectrum from hyperspectral remotely sensed imagery, and proposes the process of hyperspectral unmixing analysis. First of all, a jointed endmember extracting and interactive algorithm which based on Pixel Purity Index (PPI), scatter plots and Ndimensional visualization were used to extract endmember of identity ground targets; the point which located in the edge and edge node were considered as endmember of identity ground targets by an interactive method. Secondly, the Linear Spectral Mixing Model (LSMM) was used for hyperspectral unmixing analysis based on the extracted endmember information; and the residual error and root mean square error (RMS) was selected for the evaluation model. Thirdly, Spectral Angle Match (SAM) algorithm was introduced to match the endmember with the pixels, at the same time, the matching threshold were adjusted interactively. At last, the proportion of endmember is estimated and the abundance maps of each endmember were derived. From the experiment, it has shown that the proposed jointed endmember extraction and unmixing analysis algorithm performs as well as or even better than the commonly used algorithms.

Paper Details

Date Published: 30 October 2009
PDF: 6 pages
Proc. SPIE 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis, 749524 (30 October 2009); doi: 10.1117/12.833187
Show Author Affiliations
Hongjun Su, Nanjing Normal Univ. (China)
Yehua Sheng, Nanjing Normal Univ. (China)
Yongning Wen, Nanjing Normal Univ. (China)

Published in SPIE Proceedings Vol. 7495:
MIPPR 2009: Automatic Target Recognition and Image Analysis
Tianxu Zhang; Bruce Hirsch; Zhiguo Cao; Hanqing Lu, Editor(s)

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