期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
PDGI-BASED REGULAR SWEPT SURFACE EXTRACTION FROM POINT CLOUD 被引量:3
1
作者 LI Jiangxiong KE Yinglin LI An ZHU Weidong 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2006年第3期322-329,共8页
A principal direction Gaussian image (PDGI)-based algorithm is proposed to extract the regular swept surface from point cloud. Firstly, the PDGI of the regular swept surface is constructed from point cloud, then the... A principal direction Gaussian image (PDGI)-based algorithm is proposed to extract the regular swept surface from point cloud. Firstly, the PDGI of the regular swept surface is constructed from point cloud, then the bounding box of the Gaussian sphere is uniformly partitioned into a number of small cubes (3D grids) and the PDGI points on the Gaussian sphere are associated with the corresponding 3D grids. Secondly, cluster analysis technique is used to sort out a group of 3D grids containing more PDGI points among the 3D grids. By the connected-region growing algorithm, the congregation point or the great circle is detected from the 3D grids. Thus the translational direction is determined by the congregation point and the direction of the rotational axis is determined by the great circle. In addition, the positional point of the rotational axis is obtained by the intersection of all the projected normal lines of the rotational surface on the plane being perpendicular to the estimated direction of the rotational axis. Finally, a pattem search method is applied to optimize the translational direction and the rotational axis. Some experiments are used to illustrate the feasibility of the above algorithm. 展开更多
关键词 Reverse engineering Feature extraction Regular swept surface Gaussian image Cluster analysis
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部