Technology and Methodology |
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A General Approach for Suppressing Vegetation in Optical Remotely Sensed Imagery |
YU Le 1, ZHANG Qin-yu 2 , ZHU Jun 2, ZHANG Deng-rong 3 |
(1.Center for Earth System Science, Tsinghua University, Beijing 100084, China; 2.Department of Earth Science, Zhejiang University, Hangzhou 310027, China; 3.Institute of Remote Sensing and Geoscience, Hangzhou Normal University, Hangzhou 310026, China) |
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Abstract Vegetation coverage is always an obstacle in the lithological information extraction from optical remotely sensed imagery. Aimed at enhancing lithological and soil information in vegetation coverage area, this paper used a three-step (i.e., masking, enforced variance, histogram equalization) general vegetation suppression approach. Four experiments were conducted by using different datasets in different locations, which included a Landsat ETM+ image in Hangzhou of Zhejiang, a Landsat ETM+ image in Funing of Yunnan, a Hyperion image in Rongtang of Jiangxi and a MODIS image in Guangdong. The results indicate the effectiveness of the proposed approach in suppressing vegetation in optical remote sensing images with different spatial and spectral resolutions.
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Keywords
HDF4
MODIS
SDS
Vdata
Extraction of Image
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Issue Date: 17 June 2011
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