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30 October 2009Adaptive shrinkage despeckling for SAR image based on nonsubsampled contourlet transform
An improved Nonsubsampled Contourlet Transform (NSCT)-based method has been proposed in this paper, using
subbands mask prior models and directional information for synthetic aperture radar (SAR) image despeckling. The
NSCT is a shift-invariant directional wavelet transform which satisfies the demands of SAR image despeckling.
Wedding coefficient statistic character of NSCT subbands and directional information captured by the transform, this
paper applies anisotropic neighborhood models to the processing of adaptive shrinkage. The resulting algorithm strongly
suppresses speckle, while preserving detailed information and image edges compared with other traditional despeckling
methods.
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Shuang Wang, Hong Zhao, Licheng Jiao, Biao Hou, "Adaptive shrinkage despeckling for SAR image based on nonsubsampled contourlet transform," Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 749414 (30 October 2009); https://doi.org/10.1117/12.832876