边收缩 meaning in Chinese

contraction of edge

Because 3d surface model contains huge number of triangles , a mesh simplification algorithm based on triangle edges shrinkages is presented in this paper to speed up the rendering in real time . in chapter four , the cutting of reconstructed 3d models is explored . in order to observe expediently the size and interspaces structure of inner tissues and avoid the discommodiousness of surface reconstruction , a simple cutting methods based on ray - casting algorithm is presented to get the inner images information
第三章主要对marchingcubes ( mc )表面重建算法进行描述， mc算法是基于规则体数据抽取等值面的经典算法，本文实现了这种等值面构建表面模型的算法，并对其算法的二义性进行了相应的处理；针对其重建速度较慢的问题，提出了体素间相关性处理的方法来加快重建速度；并对其生成的表面几何模型所包含三角面片数量巨大的问题，提出一种快速有效的三角形边收缩算法进行网格简化，提高了表面模型的绘制速度。