摘要
介绍了基于3-4Chamfer距离变换的边缘匹配方法,针对距离变换易受干扰等问题,提出了使用距离变换的标记图方法建立目标图像边缘点与其距离图的对应关系。利用Model-Based方法,使用参数搜索遗传算法,将结合标记图的3-4Chamfer距离作为评价依据。实验结果显示,使用3-4Chamfer距离图结合路径图的方法对轮廓的匹配比直接使用距离图的方法有较明显的改进。
A novel method-label mapping is proposed to deal with the problem of noise in 3- 4chamfer distance map. Features of edge pixels, which are difficult to be applied directly with the distance map, are available by label map. At the same time, the influence of noise in distance map is weakened due to the mapping between labels and pixels. Model-based method is used in edge matching and the matching score is evaluated by the distance map and label map. This process consists in searching for the best parameters of affine transform. A genetic algorithm is used in the estimation of these parameters.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2006年第8期675-678,703,共5页
Geomatics and Information Science of Wuhan University
基金
国家973计划资助项目(2006CB701304)
关键词
距离变换
标记图
边缘匹配
遗传算法
chamfer distance transform
label map
edge matching
genetic algorithm
