concave polygon meaning in English

凹多边形

Using these methods , similarity measure to simple concave polygons has been realized
综合考虑了形状、位置、方向、大小因素的影响，实现了凹多边形的匹配。
Exactly based on this idea , sub - model decomposition approach to concave polygon and hierarchical model weighted measure are presented
本文正是基于这种分层的思想，定义了凹多边形的模式分解方法和分层加权测度模型。
This paper puts forward an efficient algorithm for polygon clipping , and it is suitable for not only concave polygon but also the polygon with hole in it
本文提出了一个有效的多边形裁剪算法，它不仅适用于凹多边形而且适用于带孔洞的多边形。
As to simple concave polygons or complicated planar polygons with holes , they must be decomposed to the collection of triangular facets or arbitrary convex polygons to satisfy the requirement of succeeding graphic operations
对于简单凹多边形或有内孔的复杂平面多边形，需要将它们剖分成三角面片的集合或任意凸多边形的集合。