| FREE-FORM SURFACE RECON-STRUCTION BASED ON NURBS TO SERIAL CROSS-SECTIONS |
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| 作者姓名： | Sun Yuwen
School of Mechanical Engineering Dalian University of Technology Dalian China
Wang Yuechao Liu Weijun
Robotics Laboratory Shenyang Institute of Automation Chinese Academy of Science Shenyang China |
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| 作者单位： | Sun Yuwen
School of Mechanical Engineering，Dalian University of Technology，Dalian 116024，China
Wang Yuechao Liu Weijun
Robotics Laboratory，Shenyang Institute of Automation，Chinese Academy of Science，Shenyang 110015，China |
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| 基金项目： | Provincial Natural Science Foundation of Liaoning,China (No.20010102087) |
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| 摘 要： | A new method for recovering shape from cross-sectional contours with complex branchingstructures is presented. First, each branching problem by providing an intermediate contour using dis-tance function and image processing technology is solved. Then, all contours are divided into severalgroups of simple contours. For each group, a NURBS curve is fitted to contour points in each sectionwithin a given accuracy on a common knot vector.Finally, the NURBS surface skinning of these con-tours is performed for providing a smooth geometric model. The method is suitable to reproduce theobject by NC machining or rapid prototyping. Some results demonstrate its usefulness and feasibility.
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| 关 键 词： | 分段轮廓 非均匀有理B样条 表面修复 树枝状 |
FREE-FORM SURFACE RECONSTRUCTION BASED ON NURBS TO SERIAL CROSS-SECTIONS |
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| Sun Yuwen
School of Mechanical Engineering,Dalian University of Technology,Dalian ,China
Wang Yuechao Liu Weijun
Robotics Laboratory,Shenyang Institute of Automation,Chinese Academy of Science,Shenyang ,China.FREE-FORM SURFACE RECON-STRUCTION BASED ON NURBS TO SERIAL CROSS-SECTIONS[J].Chinese Journal of Mechanical Engineering,2003,16(4):420-423. |
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| Authors: | SunYuwen WangYuechao LiuWeijun |
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| Affiliation: | [1]SchoolofMechanicalEngineenng,DalianUniversityofTechnology,Dalian116024,China [2]RoboticsLaboratory,ShenyangInstituteofAutomation,ChineseAcademyofScience,Shenyang110015,China |
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| Abstract: | A new method for recovering shape from cross-sectional contours with complex branching structures is presented. First, each branching problem by providing an intermediate contour using distance function and image processing technology is solved. Then, all contours are divided into several groups of simple contours. For each group, a NURBS curve is fitted to contour points in each section within a given accuracy on a common knot vector. Finally, the NURBS surface skinning of these contours is performed for providing a smooth geometric model. The method is suitable to reproduce the object by NC machining or rapid prototyping. Some results demonstrate its usefulness and feasibility. |
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| Keywords: | Sectional contour Non-uniform rational B-splines Branching Surface reconstruction |
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