关键词: 逆向工程, 工业CT, 阶梯状伪影, 网格重建

Abstract: Due to slices distance factor,surface meshes extracted from industrial CT data often contain stair-stepped artifacts.To remove stair-stepped artifacts during mesh generation,a novel removal surface artifacts method was proposed.The k-nearest neighbors of industrial CT point clouds were constructed,the point cloud vector were estimated based on Gaussian weight covariance analysis and the noise from point clouds was removed by bilateral filtering.The point clouds were fitted by quadric error function and the triangular meshes was managed by adaptive spherical cover method.The experimental results showed that the proposed approach could efficiently remove stair-stepped artifacts and produce high-quality triangular meshes with a reasonable accuracy.

Key words: reverse engineering, industrial CT, stair-stepped artifacts, mesh reconstruction