Graphics & Geometric Computing Group

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科研 - 承担项目研究方向发表论文

承担项目 返回

1. 可视媒体智能处理的理论与方法，2006CB303100，国家重大基础研究与发展规划项目（973项目）。

2. 数字几何处理，60333010，国家自然科学基金重点项目（与北大、浙大合作）。

3. 特征敏感的几何处理，60673004，国家自然科学基金项目。

4. 扫描点云的表示与修复，60603085，国家自然科学基金项目。

5. 基于结构分析的视频处理，20060003057，教育部博士点基金。

研究方向 返回

1. 真实感图形学算法

2. 数字几何处理

3. 计算机动画

5. 基于视频绘制

6. 曲线曲面造型

4. 几何容差

7. 智能信息处理与可视化

8. 视觉导航

发表论文 返回

2007

1.
Qian-Yi Zhou, Tao Ju and Shi-Min Hu, Topology Repair of Solid Models Using Skeletons, IEEE Transaction on Visualization and Computer Graphics, 2007 (accepted) [PDF]

2.
Yu-Kun Lai, Qian-Yi Zhou, Shi-Min Hu, Johannes Wallner and Helmut Pottmann, Robust Feature Classification and Editing, IEEE Transaction on Visualization and Computer Graphics Vol.13, pp. 34-45, 2007. [PDF]

2006

1.
Yu-Kun Lai, Shi-Min Hu and Ralph Martin, Surface Mosaics, In: Proceedings of Pacific Graphics, special issues of The Visual Computer, vol. 22(9–11), 2006, 604–611. [PDF]

2.
Yu-Kun Lai, Shi-Min Hu and Helmut Pottmann Surface Fitting Based on a Feature Sensitive Parameterization, Computer-Aided Design, vol. 38(7), 2006, pp. 800--807. [PDF]

3.
Yong-Liang Yang, Yu-Kun Lai, Shi-Min Hu and Helmut Pottmann Robust Principal Curvatures on Multiple Scales, Proceedings of 4th Eurographics Symposium on Geometry Processing (2006). Eurographics Association, 223-226. [PDF]

4.
Helmut Pottmann, Qi-Xing Huang, Yong-Liang Yang and Shi-Min Hu Geometry and convergence analysis of algorithms for registration of 3D shapes, International Journal of Computer Vision, 2006, Vol. 67, No. 3, 277-296. [PDF]

5.
Li Jin, Donguk Kim, Lisen Mu, Deok-Soo Kim, Shi-Min Hu, A sweepline algorithm for Euclidean Voronoi diagram of circles, Computer-Aided Design, 2006, Vol. 38, No. 3, 260-278. [PDF]

6.
Qi-Xing Huang, Simon Flory, Natasha Gelfand, Michael Hofer and Helmut Pottmann, Reassembling Fractured Objects by Geometric Matching, ACM Transactions on Graphics Volume 25 , Issue 3 pp.569-578. (ACM SIGGRAPH 2006) [PDF]

7.
Yang Liu, Helmut Pottmann, Johannes Wallner, Yong-Liang Yang and Wenping Wang, Geometric Modeling with Conical Meshes and Developable Surfaces, ACM Transactions on Graphics Volume 25 , Issue 3 pp.681-689. (ACM SIGGRAPH 2006) [PDF]

8.
Han-Bing Yan, Shi-Min Hu and Ralph R. Martin, Skeleton-Based Shape Deformation Using Simplex Transformations, Lecture Notes in Computer Science 4035, 66-77. (Computer Graphics International 2006) [PDF]

9.
Yu-Kun Lai, Qian-Yi Zhou, Shi-Min Hu and Ralph R. Martin, Feature Sensitive Mesh Segmentation, ACM Symp. Solid and Physical Modeling, pp. 7-16, 2006, [PDF]

10.
Xiao-Hua Cai, Yun-Tao Jia, Xi Wang, Shi-Min Hu and Ralph R. Martin, Rendering Soft Shadows using Multilayered Shadow Fins, Computer Graphics Forum, 2006, Vol.25, No.1, 1-14. [PDF]

2005

1.
Yun-Tao Jia, Shi-Min Hu and Ralph R Martin, Video Completion using Tracking and Fragment Merging, The Visual Computer, 2005, Vol. 21, No. 8-10, 601-601. [PDF]

2.
Xu-Ping Zhu, Shi-Min Hu, Chiew-Lan Tai, and Ralph R Martin, A Marching Method for Computing Intersection Curves of Two Subdivision Solids, in Mathematics of Srufaces XI, Eds. R. R. Martin, H. Bez, M. A. Sabin, 458-471, 2005. [PDF]

3.
Yu-Kun Lai, Shi-Min Hu, Xianfeng Gu, Ralph R Martin, Geometric texture synthesis and transfer via geometry images, ACM Solid and Physical Modeling, MIT, USA, June 13-15, 2005, 15-26. [PDF]

4.
Johannes Wallner, Hans-Peter Schrocker, Shi-min Hu, Tolerance in geometric constraints solving, Reliable Computing, 2005, Vol. 11, No. 3, 235-251. [PDF]

5.
Shi-min Hu, Johannes Wallner, A second order algorithm for orthogonal projection onto curves and surfaces, Computer Aided Geometric Design, 2004, Vol.22, No. 3, 251-260. [PDF]

6.
Qi-Xing Huang, Shi-Min Hu and Ralph R. Martin, Fast degree elevation and knot insertion for B-spline curves, Computer Aided Geometric Design, 2005, Vol 22, No. 2, 183-197. [PDF]

2004

1.
Han-Bing Yan, Shi-Min Hu, Ralph R. Martin, Morphing Based on Strain Field Interpolation, Journal of Computer Animation and Virtual Worlds (CAVW), 2004, Vol.15, No.3-4, 443-452. [PDF]

2.
Shi-min Hu, Johannes Wallner, Error Propagation through Geometric Transformations, Journal for Geometry and Graphics, 2004, Vol.8, No.2, 171-183. [PDF]

3.
Xi Wang, Xin Tong, Stephen Lin, Shimin Hu, Baining Guo, Heung-Yeung Shum, Generalized Displacement Maps, Proceedings of Eurographics Symposium on Rendering (2004), H. W. Jensen, A. Keller (Editors), [PDF]

4.
Shi-Min Hu, Chen-feng Li, Hui Zhang, Actual Morphing: A phsical-based approach for blending two 2D/3D shapes, ACM Symposium on Solid Modeling and Applications, Genova, Italy, June 9-11, 2004. [PDF]

2003

1.
Xi Wang, Lifeng Wang, Ligang Liu, Shi-Min Hu and Baining Guo, Interactive Modeling of Tree Bark, In: Proceedings of Pacific Graphics 2003, IEEE CS Press, 2003, 83-90, Oct 8-10, Alberta, Canada. [PDF]

2.
Lifeng Wang, Xi Wang, Xin Tong, Steve Lin, Shimin Hu, Baining Guo and Heung-Yeung Shum, View-Dependent Displacement Mapping, In: Proceedings of SIGGRAPH 2003, ACM Transaction on Graphics, Vol. 22, No. 3. 334-339. [PDF]

3.
Xu-Ping Zhu, Shi-Min Hu and Martin Ralph, Skeleton-Based Seam Computation for Triangulated Surface Parameterization, In Proceedings of Mathematics in Surfaces X, Sept 2003, Leeds, UK; Lecture Notes in Computer Science 2768, 2003, 1-13. [PS]

4.
Chiew-Lan Tai, Hu Shi-Min and Qixing Huang, Approximate merging of B-Spline curves via knot adjustment and constrained optimization, Computer Aided Design, 2003, Vol. 35, No. 10, 893 - 899. [PDF]

5.
Tao Wang, Yong Rui, Shi-Min Hu and Jia-guang Sun, Adaptive tree similarity learning for image retrieval, Multimedia Systems, 2003, Vol. 9, No. 2, 131–143. [PDF]

6.
丁俊勇, 胡事民, 周登文, Loop细分曲面的等距曲面的逼近, 计算机学报，2003, Vol. 26, No. 7, 796-801.

7.
张松海　殷培　胡事民, 几何变换的误差传播, 计算机辅助设计与图形学学报， Vol. 15, No. 5, 537-540, 2003 （第一届全国几何设计与计算学术会议宣读，青岛，2002）.

2002

1.
Shi-Min Hu, Chiew-Lan Tai, Song-Hai Zhang, An Extension algorithm for B-spline curves by curve unclamping, Computer Aided Design, 2002, Vol. 34, No. 5, 415-4191. [PDF]

2.
Yan-Tao Li, Shi-Min Hu and Jia-Guang Sun, A Constructive Approach to Solving 3-D Geometric Constraint Systems Using Dependence Analysis, Computer Aided Design, 2002, Vol. 34, No. 2, 97-108. [PDF]

3.
Liu Shi-Xia, Hu Shi-Min, Sun Jiaguang, Two accelerating techniques for 3D reconstruction, Journal of Computer Science and Technology, 2002, Vol. 17, No. 3, 362-368. [PDF]

4.
王涛胡事民孙家广, 基于颜色-空间特征的图像检索, 软件学报， 2002, Vol. 13, No. 10, 2031-2036.

5.
杨怀平、胡事民、孙家广，一种实现水波动画的新算法，计算机学报， 2002, Vol. 25, No.6, 624—631。

2001

1.
Shi-Xia Liu, Shi-Min Hu, Yu-Jian Chen, Jia-Guang Sun, Reconstruction of curved solids from engineering drawings, Computer Aided Design, 2001, Vol. 33, No. 14, 1059-1072. [PDF]

2.
Shi-Min Hu, Youfu Li, Tao JU, Xiang Zhu, Modifying the shape of NURBS surfaces with geometric constraints, Computer Aided Design, 2001, Vol. 33, No. 12, 903-912. [PDF]

3.
Shi-Min, Hu Conversion between triangular and rectangular Bezier patches, Computer Aided Geometric Design, 2001, Vol.18, No. 7, 667-671. (In Special issue of memory of P. Bezier). [PDF]

4.
Shi-Min Hu, Hui Zhang, Chiew-Lan Tai, Jia-Guang Sun, Direct Manipulation of FFD: Efficient Explicit Solutions and Decomposible Multiple Point Constraints, The Visual Computers, 2001, Vol. 17, No. 6, 370-379. [PDF]

5.
Jun-Hai Yong, Shi-Min Hu, Jia-Guang Sun, Degree reduction of B-spline curves, Computer Aided Geometric Design, 2001, Vol. 13, NO. 2, 117-127. [PDF]

6.
Shi-Min Hu, Ruofeng Tong, Tao JU, Jia-Guang Sun, Approximate merging of a pair of Bezier curves, Computer Aided Design, 2001, Vol 33, No. 2, 125-136. [PDF]

7.
Jun-Hai Yong, Shi-Min Hu, JIa-Guang Sun, CIM Algorithm for Approximating Three Dimensional Polygonal Curves, Journal of Computer Science and Technology, 2001, 16(6), 489-497. [PDF]

8.
Tao Wang, Yong Rui and Shi-Min Hu, Optimal Adaptive Learning for Image Retrieval, Proceedings of IEEE Computer Vision and Pattern Recognition (CVPR 2001), I-1140 to 1147, Kauai, Hawaii, December 11-13, 2001. [PDF]

9.
Yan-Tao Li, Shi-Min Hu, Jia-Guang Sun, On the numerical redundancies of geometric constraint systems, Proceedings of Pacific Graphics 2001, 118-123, IEEE Computre Society Press, 2001, Tokyo. [PDF]

10.
Jian-Hua Wu, Shi-Min Hu, Chiew-Lan Tai and Jia-Guang Sun, An effective feature-preserving mesh simplification scheme based on face constriction, Proceedings of Pacific Graphics 2001, 12-21, IEEE Computre Society Press, 2001, Tokyo. [PDF]

11.
Hui Zhang, Shi-Min Hu，Jia-Guang Sun, A New Deformation technique Based on Line Segment Sets, Proceedings of The Seventh International Conference on Computer Aided Design and Computer Graphics, August 22-24, Kunming, China, Volume 1, 70-73.

12.
Yan-Tao Li, Shi-Min Hu, Jia-Guang Sun, Solving hybrid assembly constraint systems, Proceedings of The Seventh International Conference on Computer Aided Design and Computer Graphics,August 22-24, Kunming, China, Volume 2, 726-729.

13.
满家巨、胡事民、雍俊海、孙家广，B样条曲线节点去除与光顺，软件学报，Vol. 12, No. 1，2001, 143-147。

图形学和几何计算组
tsinghua_log

人机交互与媒体集成研究所

计算机科学与技术系

清华大学中国北京

承担项目		返回
	1.	可视媒体智能处理的理论与方法，2006CB303100，国家重大基础研究与发展规划项目（973项目）。
	2.	数字几何处理，60333010，国家自然科学基金重点项目（与北大、浙大合作）。
	3.	特征敏感的几何处理，60673004，国家自然科学基金项目。
	4.	扫描点云的表示与修复，60603085，国家自然科学基金项目。
	5.	基于结构分析的视频处理，20060003057，教育部博士点基金。


研究方向		返回
	1.	真实感图形学算法
	2.	数字几何处理
	3.	计算机动画
	5.	基于视频绘制
	6.	曲线曲面造型
	4.	几何容差
	7.	智能信息处理与可视化
	8.	视觉导航


发表论文		返回
		2007
	1.	Qian-Yi Zhou, Tao Ju and Shi-Min Hu, Topology Repair of Solid Models Using Skeletons, IEEE Transaction on Visualization and Computer Graphics, 2007 (accepted) [PDF]
	2.	Yu-Kun Lai, Qian-Yi Zhou, Shi-Min Hu, Johannes Wallner and Helmut Pottmann, Robust Feature Classification and Editing, IEEE Transaction on Visualization and Computer Graphics Vol.13, pp. 34-45, 2007. [PDF]

		2006
	1.	Yu-Kun Lai, Shi-Min Hu and Ralph Martin, Surface Mosaics, In: Proceedings of Pacific Graphics, special issues of The Visual Computer, vol. 22(9–11), 2006, 604–611. [PDF]
	2.	Yu-Kun Lai, Shi-Min Hu and Helmut Pottmann Surface Fitting Based on a Feature Sensitive Parameterization, Computer-Aided Design, vol. 38(7), 2006, pp. 800--807. [PDF]
	3.	Yong-Liang Yang, Yu-Kun Lai, Shi-Min Hu and Helmut Pottmann Robust Principal Curvatures on Multiple Scales, Proceedings of 4th Eurographics Symposium on Geometry Processing (2006). Eurographics Association, 223-226. [PDF]
	4.	Helmut Pottmann, Qi-Xing Huang, Yong-Liang Yang and Shi-Min Hu Geometry and convergence analysis of algorithms for registration of 3D shapes, International Journal of Computer Vision, 2006, Vol. 67, No. 3, 277-296. [PDF]
	5.	Li Jin, Donguk Kim, Lisen Mu, Deok-Soo Kim, Shi-Min Hu, A sweepline algorithm for Euclidean Voronoi diagram of circles, Computer-Aided Design, 2006, Vol. 38, No. 3, 260-278. [PDF]
	6.	Qi-Xing Huang, Simon Flory, Natasha Gelfand, Michael Hofer and Helmut Pottmann, Reassembling Fractured Objects by Geometric Matching, ACM Transactions on Graphics Volume 25 , Issue 3 pp.569-578. (ACM SIGGRAPH 2006) [PDF]
	7.	Yang Liu, Helmut Pottmann, Johannes Wallner, Yong-Liang Yang and Wenping Wang, Geometric Modeling with Conical Meshes and Developable Surfaces, ACM Transactions on Graphics Volume 25 , Issue 3 pp.681-689. (ACM SIGGRAPH 2006) [PDF]
	8.	Han-Bing Yan, Shi-Min Hu and Ralph R. Martin, Skeleton-Based Shape Deformation Using Simplex Transformations, Lecture Notes in Computer Science 4035, 66-77. (Computer Graphics International 2006) [PDF]
	9.	Yu-Kun Lai, Qian-Yi Zhou, Shi-Min Hu and Ralph R. Martin, Feature Sensitive Mesh Segmentation, ACM Symp. Solid and Physical Modeling, pp. 7-16, 2006, [PDF]
	10.	Xiao-Hua Cai, Yun-Tao Jia, Xi Wang, Shi-Min Hu and Ralph R. Martin, Rendering Soft Shadows using Multilayered Shadow Fins, Computer Graphics Forum, 2006, Vol.25, No.1, 1-14. [PDF]

		2005
	1.	Yun-Tao Jia, Shi-Min Hu and Ralph R Martin, Video Completion using Tracking and Fragment Merging, The Visual Computer, 2005, Vol. 21, No. 8-10, 601-601. [PDF]
	2.	Xu-Ping Zhu, Shi-Min Hu, Chiew-Lan Tai, and Ralph R Martin, A Marching Method for Computing Intersection Curves of Two Subdivision Solids, in Mathematics of Srufaces XI, Eds. R. R. Martin, H. Bez, M. A. Sabin, 458-471, 2005. [PDF]
	3.	Yu-Kun Lai, Shi-Min Hu, Xianfeng Gu, Ralph R Martin, Geometric texture synthesis and transfer via geometry images, ACM Solid and Physical Modeling, MIT, USA, June 13-15, 2005, 15-26. [PDF]
	4.	Johannes Wallner, Hans-Peter Schrocker, Shi-min Hu, Tolerance in geometric constraints solving, Reliable Computing, 2005, Vol. 11, No. 3, 235-251. [PDF]
	5.	Shi-min Hu, Johannes Wallner, A second order algorithm for orthogonal projection onto curves and surfaces, Computer Aided Geometric Design, 2004, Vol.22, No. 3, 251-260. [PDF]
	6.	Qi-Xing Huang, Shi-Min Hu and Ralph R. Martin, Fast degree elevation and knot insertion for B-spline curves, Computer Aided Geometric Design, 2005, Vol 22, No. 2, 183-197. [PDF]

		2004
	1.	Han-Bing Yan, Shi-Min Hu, Ralph R. Martin, Morphing Based on Strain Field Interpolation, Journal of Computer Animation and Virtual Worlds (CAVW), 2004, Vol.15, No.3-4, 443-452. [PDF]
	2.	Shi-min Hu, Johannes Wallner, Error Propagation through Geometric Transformations, Journal for Geometry and Graphics, 2004, Vol.8, No.2, 171-183. [PDF]
	3.	Xi Wang, Xin Tong, Stephen Lin, Shimin Hu, Baining Guo, Heung-Yeung Shum, Generalized Displacement Maps, Proceedings of Eurographics Symposium on Rendering (2004), H. W. Jensen, A. Keller (Editors), [PDF]
	4.	Shi-Min Hu, Chen-feng Li, Hui Zhang, Actual Morphing: A phsical-based approach for blending two 2D/3D shapes, ACM Symposium on Solid Modeling and Applications, Genova, Italy, June 9-11, 2004. [PDF]

		2003
	1.	Xi Wang, Lifeng Wang, Ligang Liu, Shi-Min Hu and Baining Guo, Interactive Modeling of Tree Bark, In: Proceedings of Pacific Graphics 2003, IEEE CS Press, 2003, 83-90, Oct 8-10, Alberta, Canada. [PDF]
	2.	Lifeng Wang, Xi Wang, Xin Tong, Steve Lin, Shimin Hu, Baining Guo and Heung-Yeung Shum, View-Dependent Displacement Mapping, In: Proceedings of SIGGRAPH 2003, ACM Transaction on Graphics, Vol. 22, No. 3. 334-339. [PDF]
	3.	Xu-Ping Zhu, Shi-Min Hu and Martin Ralph, Skeleton-Based Seam Computation for Triangulated Surface Parameterization, In Proceedings of Mathematics in Surfaces X, Sept 2003, Leeds, UK; Lecture Notes in Computer Science 2768, 2003, 1-13. [PS]
	4.	Chiew-Lan Tai, Hu Shi-Min and Qixing Huang, Approximate merging of B-Spline curves via knot adjustment and constrained optimization, Computer Aided Design, 2003, Vol. 35, No. 10, 893 - 899. [PDF]
	5.	Tao Wang, Yong Rui, Shi-Min Hu and Jia-guang Sun, Adaptive tree similarity learning for image retrieval, Multimedia Systems, 2003, Vol. 9, No. 2, 131–143. [PDF]
	6.	丁俊勇, 胡事民, 周登文, Loop细分曲面的等距曲面的逼近, 计算机学报，2003, Vol. 26, No. 7, 796-801.
	7.	张松海　殷培　胡事民, 几何变换的误差传播, 计算机辅助设计与图形学学报， Vol. 15, No. 5, 537-540, 2003 （第一届全国几何设计与计算学术会议宣读，青岛，2002）.

		2002
	1.	Shi-Min Hu, Chiew-Lan Tai, Song-Hai Zhang, An Extension algorithm for B-spline curves by curve unclamping, Computer Aided Design, 2002, Vol. 34, No. 5, 415-4191. [PDF]
	2.	Yan-Tao Li, Shi-Min Hu and Jia-Guang Sun, A Constructive Approach to Solving 3-D Geometric Constraint Systems Using Dependence Analysis, Computer Aided Design, 2002, Vol. 34, No. 2, 97-108. [PDF]
	3.	Liu Shi-Xia, Hu Shi-Min, Sun Jiaguang, Two accelerating techniques for 3D reconstruction, Journal of Computer Science and Technology, 2002, Vol. 17, No. 3, 362-368. [PDF]
	4.	王涛胡事民孙家广, 基于颜色-空间特征的图像检索, 软件学报， 2002, Vol. 13, No. 10, 2031-2036.
	5.	杨怀平、胡事民、孙家广，一种实现水波动画的新算法，计算机学报， 2002, Vol. 25, No.6, 624—631。

		2001
	1.	Shi-Xia Liu, Shi-Min Hu, Yu-Jian Chen, Jia-Guang Sun, Reconstruction of curved solids from engineering drawings, Computer Aided Design, 2001, Vol. 33, No. 14, 1059-1072. [PDF]
	2.	Shi-Min Hu, Youfu Li, Tao JU, Xiang Zhu, Modifying the shape of NURBS surfaces with geometric constraints, Computer Aided Design, 2001, Vol. 33, No. 12, 903-912. [PDF]
	3.	Shi-Min, Hu Conversion between triangular and rectangular Bezier patches, Computer Aided Geometric Design, 2001, Vol.18, No. 7, 667-671. (In Special issue of memory of P. Bezier). [PDF]
	4.	Shi-Min Hu, Hui Zhang, Chiew-Lan Tai, Jia-Guang Sun, Direct Manipulation of FFD: Efficient Explicit Solutions and Decomposible Multiple Point Constraints, The Visual Computers, 2001, Vol. 17, No. 6, 370-379. [PDF]
	5.	Jun-Hai Yong, Shi-Min Hu, Jia-Guang Sun, Degree reduction of B-spline curves, Computer Aided Geometric Design, 2001, Vol. 13, NO. 2, 117-127. [PDF]
	6.	Shi-Min Hu, Ruofeng Tong, Tao JU, Jia-Guang Sun, Approximate merging of a pair of Bezier curves, Computer Aided Design, 2001, Vol 33, No. 2, 125-136. [PDF]
	7.	Jun-Hai Yong, Shi-Min Hu, JIa-Guang Sun, CIM Algorithm for Approximating Three Dimensional Polygonal Curves, Journal of Computer Science and Technology, 2001, 16(6), 489-497. [PDF]
	8.	Tao Wang, Yong Rui and Shi-Min Hu, Optimal Adaptive Learning for Image Retrieval, Proceedings of IEEE Computer Vision and Pattern Recognition (CVPR 2001), I-1140 to 1147, Kauai, Hawaii, December 11-13, 2001. [PDF]
	9.	Yan-Tao Li, Shi-Min Hu, Jia-Guang Sun, On the numerical redundancies of geometric constraint systems, Proceedings of Pacific Graphics 2001, 118-123, IEEE Computre Society Press, 2001, Tokyo. [PDF]
	10.	Jian-Hua Wu, Shi-Min Hu, Chiew-Lan Tai and Jia-Guang Sun, An effective feature-preserving mesh simplification scheme based on face constriction, Proceedings of Pacific Graphics 2001, 12-21, IEEE Computre Society Press, 2001, Tokyo. [PDF]
	11.	Hui Zhang, Shi-Min Hu，Jia-Guang Sun, A New Deformation technique Based on Line Segment Sets, Proceedings of The Seventh International Conference on Computer Aided Design and Computer Graphics, August 22-24, Kunming, China, Volume 1, 70-73.
	12.	Yan-Tao Li, Shi-Min Hu, Jia-Guang Sun, Solving hybrid assembly constraint systems, Proceedings of The Seventh International Conference on Computer Aided Design and Computer Graphics,August 22-24, Kunming, China, Volume 2, 726-729.
	13.	满家巨、胡事民、雍俊海、孙家广，B样条曲线节点去除与光顺，软件学报，Vol. 12, No. 1，2001, 143-147。

图形学和几何计算组
人机交互与媒体集成研究所
计算机科学与技术系
清华大学中国北京