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Volume 34 Issue 2
Mar.  2012
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Wang Shan-Hu, You Hong-Jian, Fu Kun. An Automatic Method for Finding Matches in SAR Images Based on Coarser Scale Bilateral Filtering SIFT[J]. Journal of Electronics & Information Technology, 2012, 34(2): 287-293. doi: 10.3724/SP.J.1146.2011.00568
Citation: Wang Shan-Hu, You Hong-Jian, Fu Kun. An Automatic Method for Finding Matches in SAR Images Based on Coarser Scale Bilateral Filtering SIFT[J]. Journal of Electronics & Information Technology, 2012, 34(2): 287-293. doi: 10.3724/SP.J.1146.2011.00568

An Automatic Method for Finding Matches in SAR Images Based on Coarser Scale Bilateral Filtering SIFT

doi: 10.3724/SP.J.1146.2011.00568
  • Received Date: 2011-06-13
  • Rev Recd Date: 2011-09-13
  • Publish Date: 2012-02-19
  • A novel method based on anisotropic scale space is proposed to find matches in SAR images, which overcomes the disadvantages of SIFT. First, the anisotropic scale space of the image is constructed using bilateral filters, which removes the speckle while preserving the detailed. Then features are detected and described using SIFT at coarser scales, which reduces the impact of speckles. Finally, matches are found by dual matching strategy, which increases the probability of correct matching. This method increases the number of correct matches while maintaining the accuracy. Through various experiments including slant range images acquired from different times, polarizations, wavelengths and viewpoints, it demonstrates the improvement over SIFT in term of the amount and accuracy of the matches.
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