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一种基于分层邻接的快速切片与拓扑重建算法 被引量:1
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作者 徐明月 吴鹏伟 《杭州电子科技大学学报(自然科学版)》 2018年第3期53-58,共6页
针对快速成型技术对切片速度和拓扑构建的需求,提出了一种基于分层邻接的快速切片和拓扑重建算法。在Z轴正方向上逐渐增加切平面的高度,用其去截三角面片,将所截边存入对应切片层,并按规定的正方向对交点进行排序从而形成最终切片层的... 针对快速成型技术对切片速度和拓扑构建的需求,提出了一种基于分层邻接的快速切片和拓扑重建算法。在Z轴正方向上逐渐增加切平面的高度,用其去截三角面片,将所截边存入对应切片层,并按规定的正方向对交点进行排序从而形成最终切片层的轮廓。轮廓线中相邻交点对应的三角面片是相邻的,根据此关系在切片结果上完成对STL模型文件的拓扑结构重建。实验以1mm为切片精度,用改进后算法与传统快速切片算法对咖啡勺、鲸鱼和花瓶的模型文件进行切片处理。与传统切片算法相比,改进后算法的速度提升率分别为9.345%,10.736%和12.541%;拓扑重建耗时分别为223ms,258ms和420ms。由实验可以看出,改进后算法切片速度更快,同时又可以完成拓扑结构的构建。 展开更多
关键词 快速切片 拓扑重建 分层邻接 STL模型文件 快速成型
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A Layered Zone Routing Algorithm in Ad Hoc Network Based on Matrix of Adjacency Connection
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作者 徐光伟 李峰 +1 位作者 石秀金 霍佳震 《Journal of Donghua University(English Edition)》 EI CAS 2007年第1期43-45,共3页
The hybrid routing protocol has received more attention recently than the proactive and the reactive, especially for large-scale and highly dynamic connection,in mobile ad hoc network. A crucial reason is that zone-la... The hybrid routing protocol has received more attention recently than the proactive and the reactive, especially for large-scale and highly dynamic connection,in mobile ad hoc network. A crucial reason is that zone-layered is being utilized in the complex systems.A hybrid routing algorithm which is layered zone based on adjacency connection(LZBAC) is put forward under the background of a few members in network with steady position and link. The algorithm modifies storage structure of nodes and improves routing mechanism. The theoretical analysis and simulation testing testify that the algorithm costs shorter time of route finding and less delay than others. 展开更多
关键词 Ad Hoc Network adjacency connection masternode routing protocol.
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