关键词: 三角网格模型, 相似性比较, 区域分割, 球面图像

Abstract: In engineering applications, retrieval of existing triangular mesh models and reuse of their design information can reduce time and cost. A similarity assessment approach of triangular mesh models based on region segmentation is described. A triangular mesh model is segmented into some regions based on spherical image. For each region, a 10-dimensional vector is used to describe its geometric properties and topological attributes. A group of 10-dimensional vectors act as the shape descriptor of the triangular mesh model. Each 10-dimensional vector is regarded as a node with attributes. Two groups of nodes that correspond to the two shape descriptors can be seen as a complete bigraph. By seeking a matching of maximum total weight from the weights of the bigraph the similarity between two shape descriptors is assessed. Experiments show that this algorithm can efficiently give the similar degree of triangular mesh models.

Key words: triangular mesh model, similarity comparison, region segmentation, spherical image