基于Hausdorff距离的图像配准研究  

Image Registration Based on Hausdorff Distance

作　　者：牛力丕[1] 毛士艺[1] 陈炜[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《电子与信息学报》2007年第1期35-38,共4页Journal of Electronics & Information Technology

摘　　要：针对图像配准中常出现的RST(旋转-比例-平移)变换,推导出了相应的盒距离变换公式。与传统的基于广义仿射变换的Hausdorff盒距离变换公式相比,缩小了搜索距离空间。在计算Voronoi表面时,根据Hausdorff距离的计算需要提出比较滑动窗口的区域Voronoi表面,节省了计算Voronoi表面的时间。并且在利用边缘点计算Hausdorff距离时,剔除琐碎的边缘,仅使用较长的边缘计算。试验结果表明,这些改进方法较大地提高了基于Hausdorff距离的图像配准的计算速度。As for the RST transform in image registration, corresponding formula of box distance transform is dieduced. Compared with traditional formula of general affine Hausdorff box distance, search range of distance is reduced. The paper proposes regional Voronoi surface combining comparison of sliding windows when computing Hansdorff distance, characterized by reducing calculating-cost for Voronoi surface. It also has the advantages of eliminating trivial edges and preserving longer edges for calculating. Experimental results show that calculation speed of image regeistation based on Huasdorff distances is improved.

关 键 词：图像配准 Voronoi表面 HAUSDORFF距离 

分 类 号：TN911.73[电子电信—通信与信息系统]