关键词: 特征边, 分割表面, 台阶效应, 自适应分层, 成型方向

Abstract: The slicing of the model is an important step for pre-processing of 3D printing. Aiming at current low efficiency of slicing and difficulty in effectively preserving subtle features, a new adaptive slicing is proposed in terms of STL model feature. The slicing result via a two-step optimization scheme are computed. Firstly, the feature edge of the model is extracted, and the surface with the feature edge is partitioned by the region growth algorithm. Secondly, the different stratification intersection algorithms are used for different surface types. Using VC++6.0 and OpenGL platform, the thicknesses of slicing layers are optimized adaptively to reduce the step effect, save the printing time and preserve the visual quality of printing results. In addition, optimized slicing direction can be achieved to obtain fine resolution of the part in terms of its actual printing direction.

Key words: feature edge, surface partition, step effect, adaptive slicing, printing direction