Mineral Information Extraction for Hyperspectral Image Based on Modified Spectral Feature Fitting Algorithm
XU Ning1,2, HU Yu-xin1,2, LEI Bin1,2, HONG You-tang3, DANG Fu-xing4
1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China 2. Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China 3. Department of Land Sciences and Technology, China University of Geosciences, Beijing 100083, China 4. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China
Abstract：Spectral feature fitting (SFF) algorithm has been frequently used since 1990s. A modified spectral feature fitting method is introduced here, which can solve some drawback of the general algorithm. The method mentioned here combines SFF with user-defined constraints in spectral absorption feature to extract more accurate target information from hyperspectral image. Two experiments are presented herein, in which three algorithms are used to obtain mineral information from hyperspectral data with different space resolution and SNR. Muscovite, calcite and chlorite etc. are extracted by general SFF, modified SFF and spectral angle mapping (SAM) respectively, and the result indicates that modified SFF algorithm is more effective in differentiating subtle spectral feature and obtaining accurate mineral information. The experiments also demonstrate that the algorithm mentioned here is validated in mineral information extraction.
Key words：Hyperspectral remote sensing;Spectral feature fitting(SFF);Spectral angle mapping(SAM);Mineral information extraction
许 宁1,2, 胡玉新1,2, 雷 斌1,2, 洪友堂3, 党福星4 . 基于改进光谱特征拟合算法的高光谱数据矿物信息提取[J]. 光谱学与光谱分析, 2011, 31(06): 1639-1643.
XU Ning1,2, HU Yu-xin1,2, LEI Bin1,2, HONG You-tang3, DANG Fu-xing4 . Mineral Information Extraction for Hyperspectral Image Based on Modified Spectral Feature Fitting Algorithm. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(06): 1639-1643.
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