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In this paper, a novel approach to automatic SAR image registration is proposed. First, the bi-temporal images are decomposed by wavelet transform. Then, the sensed image and its wavelet approximation component are divided to some saliency region based on spectrum residua approach. And the saliency regions are fitted into ellipses. Finally, the region matching is performed by searching the corresponding...
In this paper, we present a new method of change detection in SAR images based on multiscale product of wavelet transform and PCA algorithm. This method applied multiscale product of wavelet transform, in order to avoid the affect of speckle noise in SAR, enhance the changed information and weaken the effect of noise. The algorithm of PCA is used to merge every scale after the process of multiscale...
In this paper, a new change detection method based on image segmentation and fusion in multi-temporal SAR image is presented. The proposed fusion method exploits the conditional probability of difference image to two original images to fuse the segment results of two original SAR images. The new method can be divided into four steps: (1) the original SAR images are segmented into two classes using...
In this paper, an approach for detecting bridges over water bodies from high resolution SAR images is presented. It consists of two steps: water extraction and bridge detection. A method based on porosity combined with an edge mending algorithm utilizing canny edges is used to extract water bodies firstly. By considering the ubiety of bridges and water bodies, the candidate bridge regions are detected...
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