Edge detection of SAR images based on edge localization with optical images

An edge detection approach of SAR image based on edge localization with optical edge image of the same scene is proposed. First, image association is done to the two images. Then, edge detection is taken to the SAR image with the ROA detector and to the optical image with the Canny detector, respectively. Finally, the final edge result is obtained by deciding edge points in the SAR edge image based on edge localization with the optical edge image. The results of computer simulation are employed to confirm the validity of the proposed method. Edge localization is tough for edge detection of SAR images. However, the proposed method resolves the problem to some extent.