Based on second generation bandelets and combined with multi-level thresholding and Wiener filter

this paper proposes a novel denoising method.As a new multiresolution geometric analysis tool

second generation bandelets can make full use of intrinsic geometric regularity and provide optimal representation adaptively.Multilevel thresholdings satisfy the statistic characteristics of coefficients.Wiener filter can get rid of the texture effects introduced by thresholding denoising.Numerical tests applied on optical images show that the image denoising method avoids visible ringing effects and provides improvements in Peak-to-Signal Ratio.More significance

this technique is used for restraining speckle noise in synthetic aperture radar images successfully in equivalent number of looks and ratio images.