基于矿床真三维显示的图形消隐处理算法  

An algorithm of disappearing figure based on 3D visualization of ore deposit

作　　者：苏海云[1] 李仲学[1] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《北京科技大学学报》2007年第8期763-765,792,共4页Journal of University of Science and Technology Beijing

基　　金：教育部高等学校博士学科点专项科研基金项目(No2002-0008006)

摘　　要：为了更好地解决地矿实体在平面图形设备上显示时凹面矿体及多矿床实体之间的消隐问题,提出了画家消隐处理的算法.通过采取汇集前平面多边形、分解多边形图形面成三角形的图形面、排序处理三角形面、建立三角形图形面深度次序四步骤,对地矿工程三维实体消隐处理,使得原实体中那些被不透明的体素或其他实体挡住的线素或体素不再被输出,当地矿实体在平面图形设备上显示或打印时将使地矿工程三维实体更具真实感.A painter algorithm was proposed to better solve the disappearing problem of ore body when ore body was displayed in a graphics equipment. After taking four steps of merging plane polygon, decomposing polygon graphics into triangle graphics, sorting triangular surface treatment and building up triangle graphics for depth, ore body was disposed by the painter algorithm, and hidden line or body warded off by opaque body or other entities in original entities would be not output. When ore body was showed and printed by the graphics equipment, underground mining engineering body would be more realistic.

关 键 词：地矿工程 图形消隐 画家算法 三维可视化 

分 类 号：TD178[矿业工程—矿山地质测量]