关键词: 过渡特征, 特征识别, 特征抑制

Abstract: An algorithm for efficiently recognizing and suppressing blend features is present. The algorithm first recognizes all of blend faces from the Boundary Representation of a part, and then distinguishes them as edge-blend feature, vertex-blend feature and mixed-blend region. Furthermore, the mixed-blend region is divided into pure edge-blend feature and pure vertex-blend feature. Lastly, each recognized blend feature is suppressed as a whole by means of Euler Operators. The novelty of the presented algorithm lies in that all the entities of a recognized blend feature are suppressed in a global way, by which the efficiency of suppression is greatly improved. In addition, the algorithm can deal with all types of blend faces generated by various methods. In the end, some test results are given.

Key words: blend feature, feature recognition, feature suppression