By abstracting of relative position, orientation and topology relation between part function surfaces as a qualitative symbol set, the conceptual part structure qualitative models are presented.
通过将零件上功能表面之间的相对位置、朝向以及拓扑关系抽象成定性符号集合，建立了概念零件结构定性模型。
An algorithm for topology reconstruction is promoted that takes as input an unorganized set of points with known density and carries out as output simplicial surfaces.
提出了一种基于曲面局平特性的，以散乱点集及其密度指标作为输入，以三角形分片线性曲面作为输出的拓扑重建算法。
A simple topology model is presented to represent complex topology structure of free form surfaces to compose arbitrary object for reverse engineering.
首先给出能够表示任意多个自由曲面拓扑结构的描述，该模型可用于表示反求工程中的任意物体。
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