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Edge detection in SAR images has always been a challenge due to the effects of random interference of coherent signal. Unlike optical images, boundary delineation of regions is relatively ineffective for SAR images. The usual edge detectors, successful with incoherent images, yield poor results when applied to radar images, especially those with a small number of looks. Radon spectrum can be used...
Desert regions are typically characterized by the texture of sand that particular place and the orientation of dunes. We have attempted to visualize and quantify the sand dunes by local surface orientations calculated by Radon transform of sliding window region that covers entire image. This kind of representation can be used as a pre-processing step for segmentation and change detection of sand dunes...
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