叶修梓
主要研究方向为计算机辅助设计与制造（CAD/CAM）、计算机图形／图像技术、生物信息学、GIS以及数据库技术。
个性化签名
 姓名：叶修梓
 目前身份：
 担任导师情况：
 学位：

学术头衔：
博士生导师
 职称：

学科领域：
计算机应用
 研究兴趣：主要研究方向为计算机辅助设计与制造（CAD/CAM）、计算机图形／图像技术、生物信息学、GIS以及数据库技术。
暂无

主页访问
2410

关注数
0

成果阅读
73

成果数
11
【期刊论文】Today's students, tomorrow's engineers: an industrial perspective on CAD education
叶修梓， Xiuzi Yea， b， *， Wei Penga， Zhiyang Chena， YiYu Caic
ComputerAided Design xx (0000) xxxxxx，0001，（）：
1年11月30日
Today, they are students in colleges and universities. Tomorrow, they will be engineers in various industrial sectors. One of the primary goals of education is to prepare people for successful careers in the real world. As in every course, students want to obtain the maximum value of a CAD related course for their future careers. They want to obtain knowledge and skills that are most practical and useful to them when they become engineers. College professors and teachers also want to provide the maximum value for students in their CAD courses. The question is: what should be included in such a CAD curriculum. This paper tries to answer some critical questions related to developing such a curriculum, from an industrial perspective, based on the authors' survey results and the first author's own (rather limited) experiences as a R&D staff for a CAD vendor. It focuses on issues related to teaching and training students on CAD systems. These include, for different roles, how much underlying mathematical foundations in CAD systems should be taught, how much computer skills and engineering knowledge the students should know, how much design methodologies related to CAD systems should be taught, and how much ability the students should develop in order to specify their CAD needs and to evaluate and choose the CAD systems most suitable for their specific applications. The paper then shares some personal experiences and suggestions from longterm CAD veterans on the essential topics of CAD education. Based on the survey results, last section concludes the paper by authors' suggestions on what should be included in CAD curriculums for different levels of students.
Computer aided design， CAD education/， training， CAD system development， CAD system e， v， a， l， uation， CAD methodology， CAD mathematical elements

13浏览

0点赞

0收藏

0分享

152下载

0评论

引用
【期刊论文】Multiresolution model based extraction of product feature lines in reverse engineering
叶修梓， Zhiyang Chen
Engineering with Computers (2004)19:264270，0001，（）：
1年11月30日
In this paper, multiresolution models are employed in the context of reverse engineering for feature line extraction. Starting with a proper triangulation of the cloud point data as a priori, our feature line extraction algorithm has three steps: (1) establishing a Gauss normal sphere and creating multiresolution models for the Gauss sphere based on different levels of subdivisions for the sphere regions; (2) mapping the unit normal vectors of triangular faces in the multiresolution Gauss sphere and merging those connected triangular faces whose unit normal vectors fallen on the same Gauss sphere region with a given resolution to form superfaces (the collection of triangular facets with similar normal); and (3) extracting the boundaries from the superfaces and generating the feature lines from the extracted boundaries. We then use these feature lines as a base for tracing boundary curves for Bspline surface construction. Since feature lines maintain the characteristics of the original product models, in this way, we have a good chance to reconstruct Bspline surfaces with high quality. Examples are given in the paper to show the feature line extraction, the influence of the feature lines extracted under different resolutions, and the final reconstructed Bspline surfaces based on these feature lines.
Product modelling

10浏览

0点赞

0收藏

0分享

108下载

0评论

引用
【期刊论文】VR simulated training for less invasive vascular intervention
叶修梓， Yiyu Caia， *， Cheekong Chuib， e， Xiuzi Yec， f， Yaoping Wangb， James H. Andersond
Computers & Graphics 27(2003)215221，0001，（）：
1年11月30日
This paper describes a computerized simulation system for less invasive vascular interventions using virtualreality (VR)based technology. A virtual human patient is constructed on top of the visible human data (VHD) incorporating in various vascular disease cases. Specially, the human vascular network is modeled for the use of catheterization simulation. Physical modeling technique is applied to model the interaction between the blood vessels and vascular catheterization devices. A haptic interface is integrated with the computer simulation system to provide tactile sensations to the user during the simulated catheterization procedures. The system can be used for training and pretreatment planning of interventional vascular procedures.
Virtual reality， Simulation， Less invasive vascular intervention， Geometric modeling， Haptics

9浏览

0点赞

0收藏

0分享

100下载

0评论

引用
【期刊论文】Differential geometry of intersection curves of two surfaces
叶修梓， Xiuzi Ye a， ， Takashi Maekawa b， *
Computer Aided Geometric Design 16(1999)767788，0001，（）：
1年11月30日
We present algorithms for computing the differential geometry properties of intersection curves of two surfaces where the combination of two surfaces can be parametricparametric, implicitimplicit and parametricimplicit. We derive unit tangent vector, curvature vector, binormal vector, curvature, torsion, and algorithms to evaluate the higherorder derivatives for transversal as well as tangential intersections for all three types of intersection problems.
Surfacesurface intersection， Transversal intersection， Tangential intersection， Frenet frame， Curvature， Torsion， Dupin indicatrix

6浏览

0点赞

0收藏

0分享

862下载

0评论

引用
【期刊论文】Curvature continuous interpolation of curve meshes
叶修梓， Xiuzi Ye
Computer Aided Geometric Design 14(1997)169190，0001，（）：
1年11月30日
This paper presents a method for local construction of a curvature continuous (GC2) piecewise polynomial surface which interpolates a given rectangular curvature continuous quintic curve mesh. First, we create a G'2 quintic basic curve mesh, which interpolates the same grid points, preserves the tangent slopes and curvatures but not derivative vectors at the grid points. After estimating twist and higher order mixed partial derivatives for each grid point, we generate locally the socalled C2 biquintic basic patches, which serve to compute the first and second order crossderivative functions of the final interpolation surface. In order to match the tangents and second order derivative vectors of the original boundary curves at the grid points, these basic patches are reparametrized by 5
CAD/， CAM， Basic patches， B

7浏览

0点赞

0收藏

0分享

109下载

0评论

引用
【期刊论文】Robust interval solid modelling Part II: boundary evaluation
叶修梓， ChunYi Hu， Nicholas M. Patrikalakis*† and Xiuzi Ye*
ComputerAided Design, Vol. 28, No.10, pp. 819830, 1996，0001，（）：
1年11月30日
This paper elaborates the implementation of boundary evaluation of intervalbased manifold and nonmanifold solid models, based on the interval geometric representation and graphbased data structure for interval geometries. Boundary evaluation of 2D interval objects is introduced first. The paper then focuses on boundary evaluation of 3D interval objects based on the refinement of vertex, edge, face and shell nodes. Examples are given to illustrate the method. Copyright
CAD,， CAM,， CAGD,， robustness,， interval geometries,， data structure,， boundary e， v， a， l， uations

4浏览

0点赞

0收藏

0分享

44下载

0评论

引用
【期刊论文】Robust interval solid modelling Part I: representations
叶修梓， ChunYi Hu， Nicholas M. Patrikalakis*† and Xiuzi Ye*
ComputerAided Design, Vol. 28, No.10, pp. 807817, 1996，0001，（）：
1年11月30日
This paper introduces and develops an interval geometric representation for curved objects. The representation is based on rounded interval arithmetic and addresses robustness problems in current boundary representation solid modelers operating in floating point arithmetic. These problems include topology violation (such as gaps and inappropriate intersections), incidence asymmetry, and incidence intransitivity. The concepts of interval polynomial spline curves and surface patches are employed in this context. A graphbased data structure incorporating the special features of interval geometries is developed and extended to represent nonmanifold objects. Copyright
CAD,， CAM,， robustness,， rounded interval arithmetic,， interval geometries,， reliability,， nonmanifold objects,， data structure

5浏览

0点赞

0收藏

0分享

36下载

0评论

引用
【期刊论文】Geometric design of functional surfaces
叶修梓， Xiuzi Ye， Todd R Jackson and Nicholas M Patrikalakis
Computer Aided Design, Vol. 28 No.9, pp. 741752, 1996，0001，（）：
1年11月30日
The design of geometric shapes with physical constraints, such as hydrodynamic and aerodynamic constraints reflecting the functionality of the shapes, remains an important problem in CAGD. This paper presents a method to design surfaces by incorporating physical constraints involving surface normal vectors. The design of functional surfaces is formulated as a linear problem using vector calculus. The final surface is an integral nonuniform Bspline surface, which is the solution of the linear equation system resulting from the leastsquares fitting of the given grid points and the normal vectors at these points. The geometric design of propeller blade surfaces in conjunction with hydrodynamic analysis illustrates the method. Copyright
functional surfaces,， Bspline patches,， leastsquares fitting,， ship propellers

7浏览

0点赞

0收藏

0分享

42下载

0评论

引用
【期刊论文】Geometric continuity between adjacent B
叶修梓， Xiuzi Ye a， ， Youdong Liang b， Horst Nowacki a， *
Computer Aided Geometric Design 13(1996)521548，0001，（）：
1年11月30日
In this paper, the necessary and sufficient conditions for two adjacent BEzier surface patches of arbitrary degrees joining Gncontinuously along a common boundary curve are presented. These conditions are represented directly by the two surface patches, or via an intermediate surface patch. Configurations of the coefficient functions attached to the adjacent B
CAD， CAGD， B

3浏览

0点赞

0收藏

0分享

67下载

0评论

引用
【期刊论文】Ensuring compatibility of G2continuous surface patches around a nodepoint
叶修梓， Xiuzi Ye， Horst Nowacki*
Computer Aided Geometric Design 13(1996)931949，0001，（）：
1年11月30日
The problem of ensuring compatibility of mixed partial derivative vectors of surface patches joining G2continuously around a common nodepoint is essential in modelling G2continuous nsided surfaces. Although the compatibility constraints can be removed by using C2 Gregory patches, these patches have singularities at their comer points. This paper presents conditions for ensuring the compatibility of the mixed partial derivative vectors of surface patches joining GZcontinuously around a common nodepoint. After investigating the solvability of these compatibility conditions, a new solution method exploiting G3continuity of surface patches at a common nodepoint is given. Example surfaces based on this solution method are also provided.
C1 and C2 Gregory patches， Compatibility conditions， Tangentplane continuity， Curvature continuity， Geometric continuity of third order， Continuity conditions， NURB surfaces， B

3浏览

0点赞

0收藏

0分享

57下载

0评论

引用