关键词: 对称面, 分割, 形状分布, 逆向工程

Abstract: To solve the problem of symmetry plane extraction in feature based reverse engineering, a robust algorithm was presented. The model was segmented into voxels set based on its feature lines. For each voxel, shape distribution histogram was calculated, and voxels with geometry similarity were obtained through shape distribution function. The set of symmetric voxels was constructed by ones which had similar minimum bounding box. The symmetry plane was computed by robust principle component analysis. The experimental results showed that the extracted symmetry information was accurate and had robust.

Key words: symmetry plane, segmentation, shape distribution, reverse engineering