A Speckle Suppression Method for SAR Image Based on Wavelet Threholding EMD
Wei Wen-bin · 2009
In order to suppress SAR image speckle noise effectively, a new speckle reduction method was proposed in terms of EMD wavelet thresholding. In this method, the SAR image containing speckle noise was decomposed into a number of elementary components by using EMD, and then the first several components were processed by using wavelet thresholding, finally, the image was reconstructed, which reduced the speckle noise. Experimental results show that this method has good effect on suppressing speckle noise, compared to the wavelet thresholding and 2D EMD ones, and has advantages of sufficiently retaining edge and detail information while suppressing speckle noise.