Synthetic aperture radar image denoising method based on non-down sampling profile wave
A non-subsampling contour and synthetic aperture radar technology, applied in the field of image processing, can solve problems such as insufficient denoising, inability to preserve SAR image detail features well, and inability to describe image geometric information well
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[0054] refer to figure 1 , the concrete steps of the present invention are as follows:
[0055] Step 1. Input the SAR image X, and perform L-layer non-subsampling contourlet transformation on it.
[0056] Non-subsampling contourlet transform is a new translation-invariant multi-scale, local and multi-directional over-complete image representation method. The construction of the non-subsampled contourlet transform is based on the non-subsampled tower filter bank and the non-subsampled directional filter bank, and the two parts are independent of each other. A layer of non-subsampling contourlet transformation is performed on the SAR image X, and the process is as follows:
[0057] 1) Input the SAR image X into a non-downsampling tower filter bank to obtain a low-frequency signal and a band-pass signal of one layer of non-downsampling contourlet transformation of the SAR image X;
[0058] 2) Input the band-pass signal of the SAR image X into the non-subsampled direction filte...
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