贾金原
Web Graphics 游戏引擎;虚拟现实 几何造型;CAD 计算机仿真
个性化签名
- 姓名:贾金原
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
计算机软件
- 研究兴趣:Web Graphics 游戏引擎;虚拟现实 几何造型;CAD 计算机仿真
贾金原 教授
研究方向:
Web Graphics 游戏引擎
虚拟现实 几何造型
CAD 计算机仿真
主要研究成果:
共发表学术论文70余篇,其中,国际期刊和国际会议论文30余篇,SCI检索8篇,EI检索8篇,ISTP检索2篇。参与了若干项国际重大研究基金项目,主持了20项省市级的纵向课题的研究以及若干虚拟现实横向课题的开发。
学术任职:
2005年,中国计算机学会高级会员
2006年,中国图形图像学会虚拟现实专业委员会委员
2007年,国家自然科学基金委员会的评议专家
2007年,SIGCHI China Chapter Professional Member
2008年,中国计算机学会虚拟现实与可视化专委会委员
2008年,中国系统仿真学会数字娱乐专业委员会委员
2008年,国际学术期刊《The Open Virtual Reality Journal》编委
2009年,被聘为浙江数字科技馆首席专家。
部分科研项目简介:
作为一般参与者,欧共体基金项目《EXACUS,Efficient and Exact Algorithms for Curves and Surfaces》 projects/EXACUS/,该项目2002年立项,2004年完成,旨在解决CAD,图形学,虚拟现实,GIS等领域中的许多关键问题。
2008年,中法国际重大合作项目ARCUS-Chongming: Eco-Island, Pilot Project子课题“崇明岛生态环境可视化系统”,与法国著名INRIA、CIRAD与中科院自动化研究所模式识别国家重点实验室合作,三方联合大规模生态环境可视化关键技术进行攻坚。
作为主要研究者,参加了香港RGC研究基金项目《Anycast and Multicast Protocol on Computer Network for Large Scale Virtual Environment》
作为主要研究者,参加了香港RGC研究基金项目《Visibility Culling and Spatial Partitioning for Large Scale 3D Models
作为课题负责人,辽宁省教育厅科学技术基金项目《基于二次曲面剖分的旋转面和管道型曲面的求交算法》
2005年,作为课题负责人,珠海市科技局基金项目《基于WebGIS的虚拟珠海旅游环境的构建》
2005年,作为主要研究者,粤港科技合作关键领域重大突破项目《数字认证及加密技术在数字节目/游戏中的应用》
2006年,作为课题负责人,湛江市科技基金工业攻关项目《湛江市虚拟旅游网上浏览与导航系统》
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主页访问
1312
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关注数
0
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成果阅读
153
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成果数
4
【期刊论文】Quadric decomposition for computing the intersections of surfaces of revolution
贾金原, JIA Jinyuan, a, George Baciu, b, *, and Ki-Wan Kwok b
Graphical Models 66 (2004) 303-330,-0001,():
-1年11月30日
Surface subdivision has been one of the most efficient techniques for surface representation, rendering, and intersection problems. General triangular and quadrilateral subdivision schemes often lead to data proliferation and increased computational load. In this paper, we propose a novel quadric decomposition method for computing intersection curves and present an efficient algorithm for solving the intersection problem of general surfaces of revolution. In our method, we decompose surfaces of revolution into a sequence of coaxial revolute quadrics and reduce the intersection problem for two surfaces of revolution to the intersection problem for two revolute quadrics. We present the performance of our method in the context of some of the most efficient and well-known solutions proposed so far by Kim [11] and our previous method based on truncated cone decomposition [1]. We give the performance characterization and show that this method is significantly more robust and efficient than previous methods.
Surface intersection, Surface decomposition, Surface of revolution, Computer aided geometric design
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【期刊论文】Revolute Quadric Decomposition of Canal Surfaces and Its Applications
贾金原, Jinyuan Jia , Ajay Joneja , and Kai Tang
V.S. Sunderam et al. (Eds.): ICCS 2005, LNCS 3515, pp. 298-305, 2005.,-0001,():
-1年11月30日
Surfaces subdivision is an important means for geometric computing of surfaces in CAD. This paper proposes a new quadric subdivision for canal surfaces in this paper, RQ-sphere decomposition, that subdivides canal surfaces as a set of truncated revolute quadric with joint spheres. Experimental results show that the RQ-sphere decomposition is better than existing methods.
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【期刊论文】Intelligent Tree Modeling Based on L-system
贾金原, Ruoxi Sun, Jinyuan Jia, Marc Jaeger
,-0001,():
-1年11月30日
This paper proposes an intelligent approach to model realistic tree models using semi-automatic generated Lsystems. This approach is different from the traditional way of constructing L-systems that normally requires expertise in botany and manually coding. In this approach, only a few parameters those are highly intuitive and powerful to control the features of the tree need to be specified by users. Then the tree can be modelled automatically using the generated Lsystem. This approach avoids the complexity of directly using L-system and provides considerable flexibilities to model various trees. Experiments show that it is feasible to model realistic trees using generated L-systems.
Tree Modeling,, L-system,, Virtual Reality
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【期刊论文】Improved OBB Fitting Method for Elongated Objects
贾金原, Gang Ma, Jinyuan Jia, Qian Zhang
,-0001,():
-1年11月30日
We present a new method of calculating OBBs of the internal nodes in OBB-tree for elongated objects which are partially ordered. By establishing a new estimating function, we convert the problem of determining OBB's orientation to constrained extrema problem which can be solved by Lagrange multiplier method. After solving the estimating function we get a local axis of the OBB. The remaining two directions are calculated using minimal-area bounding rectangle algorithm. Project all the vertices to the local axes respectively then the size and center of the OBB can be finally determined. A large amount of tests have revealed that the OBB-tree constructed by this method fits better than those constructed by the already existing methods. Now the method proposed by this paper has been adopted by actual project.
OBB,, Lagrange multiplier,, minimal-area bounding rectangle,, major direction
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31浏览
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