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SAR Image Despeckling Based on Q-Shift DT-CWT

Liu Lijun;Hu Shiyou;Cao Xinghui;Beijing Huahang Radio Measurement Institute;  
In the coherent complex SAR imaging,SAR image will be affected by speckle noise,which will seriously affect the extraction of the target. A new method of SAR image despeckling is proposed based on Q-Shift DT-CWT. Q-Shift DT-CWT has advantages of translational invariance,multi-directional selectivity,filter symmetry structure,so SAR image polluted by speckle noise can get more high frequency information of goals through wavelet coefficients of decomposition. SAR despeckling images are obtained by modeling and image reconstruction of wavelet coefficients. Experiment results show that this method not only suppresses the speckle noise effectively,but also preserves as many target characteristics of original images as possible.
【CateGory Index】: TN957.52
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【Citations】
Chinese Journal Full-text Database 6 Hits
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