A Minimum-Cut Model Method in Wavelet Domain for SAR Image Multiscale Registration
Yu‐Chuan Li, Tian Zheng, Xiang-Zeng Liu, Haixia Xu · Dianzi xuebao · 2010
A multiscale registration method based on improved minimum cut(IMC) model in wavelet domain is proposed for synthetic aperture radar(SAR) images.First,combining the high-frequency information after wavelet decomposition with the characteristic of SAR,an image segmentation method based on IMC model in the low-frequency sub-image is presented.Then,integrated region contours are extracted from reference image and sensed image respectively.Considering the information of open and closed contours,registration parameters are obtained and refined using histogram and Hausdorff distance,respectively.Finally,multiscale registration is realized through revising the parameters in each layer.Experimental results indicate that this method can avoid the influence caused by speckle in contours extraction and matching,also it can realize sub-pixel registration for images differ by translation,rotation and scaling.