期刊
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
卷 9, 期 2, 页码 307-311出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LGRS.2011.2167211
关键词
Change detection; difference image; neighborhood; synthetic aperture radar (SAR) image; threshold
类别
资金
- National High-Technology Research and Development Program (863 Program) of China [2009AA12Z210]
- Program for New Century Excellent Talents in University [NCET-08-0811]
- Program for New Scientific and Technological Star of Shaanxi Province [2010KJXX-03]
- Fundamental Research Funds for the Central Universities [K50510020001]
This letter presents a novel neighborhood-based ratio (NR) operator to produce a difference image for change detection in synthetic aperture radar (SAR) images. In order to reduce the negative influence of speckle noise on SAR images, the proposed NR operator produces a difference image by combining gray level information and spatial information of neighbor pixels. The performance comparisons of the proposed operator with a traditional ratio operator and a log-ratio operator indicate that the NR operator is superior to these traditional methods and produces better detection results.
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