公路工程质量探讨

从工程造价、工程设计、工程监理、工程施工、质量分析、质量情报工作等影响公路建设工程质量的主要因素进行了分析和探讨,并提出了相应的改进措施。     

QX-1型船舶室外甲板敷料

由求新造船厂研制的 QX—1型船舶室外甲板敷料,经过六艘三千吨级沿海客货船的试用(其中“昌新”号沿海客货船试用已达五年)表明,敷料质量良好,使用寿命长,施工简便可靠,原料来源丰富,工时省成本低,有推广价值。为此,上海船舶工业公司已于1984年9月中旬召开会议,通过技术鉴定。     

FasFast Triangulation and Local Optimization for Scan Data of Laser Radar

In order to study the triangulation for the point cloud data collected by three-dimensional laser radar,in accordance with the line-by-line characteristics of laser radar scanning,an improved Delaunay triangulation method is proposed to mesh the point cloud data as a triangulation irregular network.Based on the geometric topology location information among radar point cloud data,focusing on the position relationship between adjacent scanning line of the point data,a preliminary match network is obtained acc...     

Fast triangulation and local optimization for scan data of laser radar

In order to study the triangulation for the point cloud data collected by three-dimensional laser radar, in accordance with the line-by-line characteristics of laser radar scanning, an improved Delaunay triangulation method is proposed to mesh the point cloud data as a triangulation irregular network. Based on the geometric topology location information among radar point cloud data, focusing on the position relationship between adjacent scanning line of the point data, a preliminary match network is obtained according to their geometric relationship. A reasonable triangulation network for the object surface is acquired after the use of local optimization on initial mesh by Delaunay rule. Meanwhile, a new judging rule is proposed to contrast the triangulation before and after the optimization on the network. The result shows that triangulation for point cloud with full use of its own characteristics can improve the speed of the algorithm obviously, and the rule for judging the triangulation can evaluate the quality of network.