SAR Speckle Reduction Based on Undecimated Tree-Structured Wavelet Transform
This paper proposes a novel filtering method for removing such speckle noise from Synthetic Aperture Radar image that combines the Stationary Tree-structured Wavelet Transform (STWT) with a Bayesian wavelet estimator. Experimental results on several test images by using the proposed method show that, the proposed method yields significantly superior image quality and better Peak Signal to Noise Ratio (PSNR).
KeywordsDiscrete Wavelet Transform Wavelet Coefficient Synthetic Aperture Radar Image Speckle Noise Speckle Reduction
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- 1.Gagnon, L., Jouan, A.: Speckle filtering of SAR images—A comparative study between complex-wavelet-based and standard filters. In: Proc. SPIE (1997)Google Scholar
- 4.Guo, H., Odegard, J.E., Lang, M., Gopinath, R.A., Selesnick, I.W., Burrus, C.S.: Wavelet based speckle reduction with application to SAR based ATD/R. In: Proc. ICIP (1994)Google Scholar
- 7.Mastriani, M., Giraldez, A.E.: Smoothing of coefficients in wavelet domain for speckle reduction in Synthetic Aperture Radar images. In: ICGST, vol. 6 (2005)Google Scholar