期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
曲面浮雕的高效表示及3D打印算法 被引量:1
1
作者 吴美娟 王士玮 +2 位作者 石磊 杨周旺 刘利刚 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2017年第10期1816-1823,共8页
针对3D浮雕网格点数、面数空间占用大,在打印过程中耗费内存等缺点,提出将凹凸贴图表示的浮雕模型直接进行切片完成打印,并提出基于凹凸贴图的浮雕网格的3D打印自适应细分切片算法.在切片过程中,先对输入的粗网格根据凹凸图深度信息进... 针对3D浮雕网格点数、面数空间占用大,在打印过程中耗费内存等缺点,提出将凹凸贴图表示的浮雕模型直接进行切片完成打印,并提出基于凹凸贴图的浮雕网格的3D打印自适应细分切片算法.在切片过程中,先对输入的粗网格根据凹凸图深度信息进行自适应中点细分,并更新细分后三角网格顶点的几何位置;然后对生成的局部三角网格集合与切片进行求交运算,将所获得的交线段存储后释放此三角形集合的内存;最后将生成的交线段重组成闭合多边形,生成打印路径,交由打印机完成浮雕模型打印.实验结果证明,将凹凸贴图推广到3D打印中,与传统的打印过程进行对比,该方法的空间利用率得到显著性提高. 展开更多
关键词 凹凸贴图 浮雕网格 3D切片 自适应细分
下载PDF
Parametric curve with an implicit domain
2
作者 ZHANG WeiHong DENG JianSong +1 位作者 yang zhouwang LIU LiGang 《Science China Mathematics》 SCIE 2014年第12期2621-2634,共14页
In this paper we present a new representation of curve, named parametric curve with an implicit domain(PCID), which is a curve that exists in parametric form defined on an implicit domain. PCID provides a bridge betwe... In this paper we present a new representation of curve, named parametric curve with an implicit domain(PCID), which is a curve that exists in parametric form defined on an implicit domain. PCID provides a bridge between parametric curve and implicit curve because the conversion of parametric form or implicit form to PCID is very convenient and efficient. We propose a framework model for mapping given points to the implicit curve in a homeomorphic manner. The resulting map is continuous and does not overlap. This framework can be used for many applications such as compatible triangulation, image deformation and fisheye views. We also present some examples and experimental results to demonstrate the effectiveness of the framework of our proposed model. 展开更多
关键词 parametric curve with an implicit domain REGULARITY quadratic programming image deformation
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部