一种基于切片的三维模型检索算法

3D model retrieval algorithm based on slice-cutting

为了更加高效地从三维模型库中检索出相似模型,提出了一种基于切片的三维模型检索算法。首先应用主元分析对三维模型进行预处理;然后对预处理后的模型在不同位置和不同方向上进行切片,根据所得切片断面的相对面积进行三维模型检索。基于该算法设计并实现了三维模型检索系统。实验采用PSB(PrincetonShape Benchmark)提供的三维模型数据库,结果表明把模型的切片截面作为三维模型的特征描述,能有效地区分不同模型,并取得了较好的检索效果。

For retrieving similar models more efficiently from 3D model database,this paper proposed a slice-cutting based 3D model retrieval method.Firstly,used PCA to preprocess a 3D model.Then,cut the preprocessed 3D model into slices using planes normal to principal directions.Finally,selected the ratio among the areas of these cutting slices as the representation of a 3D model and used to calculate the similarity between models.It developed a retrieval system based on this algorithm.The experiment adopted PSB 3D model database for retrieving.The results indicate that cutting slices based 3D model retrieval method is effective and promising.