Title :
SAR image despeckling method based on dual-tree complex wavelet
Author :
Wang, Shuang ; Zhou, Jiao ; Li, Jun ; Feng, Hongxiao
Author_Institution :
Key Lab. of Intell. Perception & Image Understanding of Minist. of Educ. of China, Xidian Univ., Xi´´an, China
Abstract :
We propose a despeckling method based on dual-tree complex wavelet transform (DTCWT) for SAR image. The Gaussian model is used to model the non-logarithmic additive noise of the local isotropic region. Shrinkage function is obtained with maximum a posteriori estimation.
Keywords :
Gaussian processes; maximum likelihood estimation; radar imaging; synthetic aperture radar; wavelet transforms; Gaussian model; SAR image despeckling method; dual-tree complex wavelet transform; local isotropic region; maximum a posteriori estimation; nonlogarithmic additive noise; shrinkage function; synthetic aperture radar; Discrete wavelet transforms; Filtering; Noise; Noise reduction; Speckle; DTCWT; Despeckling; SAR image; maximum a posteriori estimation; thresholding;
Conference_Titel :
Radar (Radar), 2011 IEEE CIE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8444-7
DOI :
10.1109/CIE-Radar.2011.6159872
