concave spherical polygon凹球面多边形
decompose concave polygon多边形分解
Concave Polygon Decomposing凹多边形分解
equilateral semiregular concave polygon等边半正凹多边形
polygon concave多边形
concave-convex vertex of polygon凸凹顶点
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。
参考来源 - 基于内容的图象检索技术研究