基于断裂面匹配的破碎物体拼接技术

该文研究了曲面三角网格模型顶点法矢、主曲率和主方向的计算方法，分析了曲面上点的类型，提出了一种基于断裂面匹配的破碎物体拼接方法。分别用曲面上点的有向脚标和无向脚标构成有向特征向量和无向特征向量，在无向特征向量匹配的基础上，经过匹配点方向映射方法判断其它无向特征匹配点对的有向特征向量的相似性，完成断裂面匹配计算。在断裂面匹配的基础上，通过匹配点方向映射实现破碎物体的拼接。实验结果表明该算法可靠地实现了破碎物体的拼接。

Technique of Mosaicing Broken Objects Based on Fractured Face Matching

Calculating methods of normal vector, principal curvatures and principal directions at each triangular mesh vertexes are researched. Types of vertexes on surface are analyzed. A method for mosaicing broken objects based on fractured faces matching is presented. Directed feature vectors and undirected feature vectors used in surface matching are consisted of directed footprints and undirected footprints respectively. Directed features similarity of pair of matching points is measured through mapping direction of matching points based on undirected features matching. Calculating for matching fractured face is completed. Based on fractured face matching, broken objects mosaicing are realized through mapping direction of pairs of matching points. Experimental results show that presented algorithm can mosaic broken objects reliably.