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A variation pixels identification method based on kernel spatial attraction model and local entropy for robust endmember extraction

  • Mechanical Engineering, Control Science and Information Engineering
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Abstract

A variation pixels identification method was proposed aiming at depressing the effect of variation pixels, which dilates the theoretical hyperspectral data simplex and misguides volume evaluation of the simplex. With integration of both spatial and spectral information, this method quantitatively defines a variation index for every pixel. The variation index is proportional to pixels local entropy but inversely proportional to pixels kernel spatial attraction. The number of pixels removed was modulated by an artificial threshold factor a. Two real hyperspectral data sets were employed to examine the endmember extraction results. The reconstruction errors of preprocessing data as opposed to the result of original data were compared. The experimental results show that the number of distinct endmembers extracted has increased and the reconstruction error is greatly reduced. 100% is an optional value for the threshold factor a when dealing with no prior knowledge hyperspectral data.

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Authors and Affiliations

  1. College of Information and Communication, Harbin Engineering University, Harbin, 150001, China

    Chun-hui Zhao  (赵春晖), Ming-hua Tian  (田明华), Bin Qi  (齐滨) & Yu-lei Wang  (王玉磊)

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  1. Chun-hui Zhao  (赵春晖)
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  2. Ming-hua Tian  (田明华)
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  3. Bin Qi  (齐滨)
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  4. Yu-lei Wang  (王玉磊)
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Corresponding author

Correspondence to Chun-hui Zhao  (赵春晖).

Additional information

Foundation item: Projects(61571145, 61405041) supported by the National Natural Science Foundation of China; Project(2014M551221) supported by the China Postdoctoral Science Foundation, China; Project(LBH-Z13057) supported by the Heilongjiang Postdoctoral Science Found, China; Project(ZD201216) supported by the Key Program of Heilongjiang Natural Science Foundation, China; Project(RC2013XK009003) supported by the Program of Excellent Academic Leaders of Harbin, China; Project(HEUCF1508) supported by the Fundamental Research Funds for the Central Universities, China

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Zhao, Ch., Tian, Mh., Qi, B. et al. A variation pixels identification method based on kernel spatial attraction model and local entropy for robust endmember extraction. J. Cent. South Univ. 23, 1990–2000 (2016). https://doi.org/10.1007/s11771-016-3256-0

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  • DOI: https://doi.org/10.1007/s11771-016-3256-0

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