| 基于过渡面重构的CAD模型压缩算法 |
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| 引用本文： | 刘俊,黄运保,王启富,陈立平.基于过渡面重构的CAD模型压缩算法[J].华中科技大学学报(自然科学版),2011(1):78-81. |
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| 作者姓名： | 刘俊 黄运保 王启富 陈立平 |
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| 作者单位： | 华中科技大学机械科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50804050); 教育部新教师基金资助项目(200804871128) |
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| 摘 要： | 提出一种基于过渡面重构的CAD模型压缩算法,将B样条逼近形式的过渡面重构为过渡参数表达形式,可有效精简所需的记录数据量.首先判断曲面边界是否是曲率线,以及是否存在某一方向上的边界线为圆弧并排除非过渡面.然后通过曲率线追踪得到曲面曲率线上的离散点,由离散点构造截面圆弧,由截面圆弧计算出过渡面参数.最后给出了模型压缩实验,结果表明该算法对于包含较多过渡面的模型,压缩率超过60%,压缩误差小于1×10-4.
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| 关 键 词： | 计算机辅助设计 模型压缩 过渡面重构 B样条 曲率线追踪 过渡半径 |
Compression of CAD models based on reconstruction of blending surfaces |
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| Liu Jun Huang Yunbao Wang Qifu Chen Liping.Compression of CAD models based on reconstruction of blending surfaces[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(1):78-81. |
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| Authors: | Liu Jun Huang Yunbao Wang Qifu Chen Liping |
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| Institution: | Liu Jun Huang Yunbao Wang Qifu Chen Liping(School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | An efficient CAD models compression method was presented based on blending surfaces reconstruction.The amount of data can be reduced by reconstruction blending surfaces from B spline form to parameter expression form.First,the non-blending surfaces were excluded if the boundary curves were not curvature curves,or no boundary curve was circular curve.Second,the distinct point sets on curvature curves by curvature tracing was obtain,and then construct section arcs from them.Third,the blending parameters were ... |
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| Keywords: | computer added design(CAD) model compression blending surface reconstruction B spline curvature curve tracing blending radius |
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