Speckle reduction of SAR images in the curvelet domain
IEEE International Geoscience and Remote Sensing Symposium - Tập 1 - Trang 315-317 vol.1
Tóm tắt
Curvelet transform (CT), proposed by E. Candes et al. (1999), is used for speckle reduction of SAR images. The CT is useful for speckle reduction through its subband images and the speckle reduction is obtained by thresholding the subband-image coefficients of the digitized SAR images. Two thresholding methods are used; hard thresholding and soft thresholding. The denoising method shows great promise for speckle removal and hence provides good detection performance for SAR based recognition.
Từ khóa
#Speckle #Noise reduction #Wavelet transforms #Discrete wavelet transforms #Continuous wavelet transforms #Computed tomography #Additive noise #Wavelet coefficients #Wavelet domain #ChaosTài liệu tham khảo
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