Denoising of SAR Images Based on Wavelet Packet

The SAR remote sensing images are interfered by noises during the detection and transmission, a method based on wavelet packet and level dependent adaptive threshold is proposed in this paper. By using this method, the SAR images can be decomposed in a more elaborate method compared to the traditional wavelet transform, and the noises in the SAR images are eliminated by the adaptive threshold method. The experiment results show that this method can reduce the noises efficiently. The PSNR and the subjective vision of the results have better performances than the result of traditional wavelet transform method.