ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Extracting boundary curves of holes from point based models is one of the basic and key technologies in the research field of digital geometry processing. An algorithm was presented for extracting the boundary curves based on the properties of point clouds and deriving a combined criterion for automatic hole detection. First, the k-neighboring points for each point were collected in a given point-based model and then the normal of the point-set surface at the point is evaluated. For each point, several essential criteria were combined, such as the largest angle criterion, half-disc criterion and shape criterion respectively, into a weighted blended probability. Finally, the boundary curves of holes were constructed by searching the nearest point strategy and the boundary points were connected by a poly-line to generate the boundary curves. Experiments show that this algorithm can run stably and robustly, and can extract various hole boundary curves from point cloud models.