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Displaying 1-20 out of 20 total
Multiresolution Modeling for the Feature-Based Parametric CAD Models
Found in: Software Engineering, World Congress on
By Shuangqing Wu, Yin Zhang, Zhiyang Chen, Sanyuan Zhang, Xiuzi Ye
Issue Date:May 2009
pp. 99-103
Feature-based parametric modeling techniques have been widely used for product design, virtual prototyping and manufacturing. Simplified models at various levels of detail (LOD) are frequently more desirable than the highly complex model in many downstream...
Shape Morphing for Point Set Surface Based on Vertex Deformation Gradient
Found in: Software Engineering, World Congress on
By Guanghua Tan, Sanyuan Zhang, Yin Zhang
Issue Date:May 2009
pp. 466-471
Shape morphing, as the efficient means to enhance the visual effects, is widely used in computer animation. In this paper, we propose a novel approach to perform shape morphing for point set surface based on vertex deformation gradient. The basic idea of o...
Chaos-Based Semi-Blind Watermarking for CAD Models
Found in: Intelligent Systems, WRI Global Congress on
By Nan Liu, Yin Zhang, Zhiyang Chen, Sanyuan Zhang
Issue Date:May 2009
pp. 411-414
Digital watermarking technique is becoming one of the hot research fields of copyright protecting, private detection for CAD graphic data under the network environment.But existing watermarking algorithms for polygonal meshes and their attributes can’t be ...
Feature-Based Automatic Portrait Generation System
Found in: Computer Science and Information Engineering, World Congress on
By Yin Zhang, Lu Gao, Sanyuan Zhang
Issue Date:April 2009
pp. 6-10
Creating a portrait in the style of a particular artistic tradition or a particular artist is a difficult and also an interesting problem in Non-photorealistic Rendering. This paper develops an automatic feature-based portrait generation system, which can ...
Palmprint Recognition Based on PFI and Fuzzy Logic
Found in: Fuzzy Systems and Knowledge Discovery, Fourth International Conference on
By Leqing Zhu, Sanyuan Zhang, Rui Xing, Yin Zhang
Issue Date:October 2008
pp. 178-182
Palmprint is one of the most reliable features in personal identification because of its stability and uniqueness. This paper proposed a novel palmprint recognition algorithm based on principal lines: a new irregular geometrical shape was employed to get v...
Region of Interest Fragile Watermarking for Image Authentication
Found in: Computer and Computational Sciences, International Multi-Symposiums on
By Yiping Chu, Yin Zhang, Sanyuan Zhang, Xiuzi Ye
Issue Date:June 2006
pp. 726-731
Digital watermarking plays an important role in image verification and copyright protection. A watermarking scheme for authenticating ROI (region of interest) of image has been proposed in the paper. To embed the watermark in the interior of ROI, Poisson m...
Human Contour Extraction Using Level Set
Found in: Computer and Information Technology, International Conference on
By Lin Liu, Sanyuan Zhang, Yin Zhang, Xiuzi Ye
Issue Date:September 2005
pp. 608-613
<p>Human contour information is important for human activity understanding and human motion capture. Traditional human contour extraction methods are based on image morphological operation, but they will fail when the contour information is dim and d...
Error Resilience Schemes of H.264/AVC for 3G Conversational Video Services
Found in: Computer and Information Technology, International Conference on
By Lin Liu, Sanyuan Zhang, Xiuzi Ye, Yin Zhang
Issue Date:September 2005
pp. 657-661
<p>The emerging of third generation mobile system (3G) makes conversational video transmission in wireless environment possible, and the latest 3GPP/3GPP2 standards suggest 3G terminals support H.264/AVC. Due to high bit error rate in wireless enviro...
Radius-Normal Histogram and Hybrid Strategy for 3D Shape Retrieval
Found in: Shape Modeling and Applications, International Conference on
By Xiang Pan, Yin Zhang, Sanyuan Zhang, Xiuzi Ye
Issue Date:June 2005
pp. 374-379
Recent development in computer hardware and modeling technologies has led to a fast increasing of 3D models. To help user find expected models accurately and efficiently, technologies on content-based 3D model retrievals have become one of the most challen...
Real-Time and Realistic Simulation for Cardiac Intervention with GPU
Found in: Computer Modeling and Simulation, International Conference on
By Rongdong Yu,Sanyuan Zhang,Patricia Chiang,Yiyu Cai,Jianmin Zheng
Issue Date:January 2010
pp. 68-72
Cardiovascular disease is the number one cause of death today in developed countries and is projected to remain so. Cardiac intervention is a minimally invasive solution to diagnose and treat the disease. Training of young cardiologists is playing an impor...
An Overview of Semantics Processing in Content-Based 3D Model Retrieval
Found in: Artificial Intelligence and Computational Intelligence, International Conference on
By Boyong Gao, Herong Zheng, Sanyuan Zhang
Issue Date:November 2009
pp. 54-59
3D models are increasing greatly, and have been used in different fields. The need of retrieving 3D models is constantly emerging. Especially, how to reduce the ‘semantic gap’ between the low-level features and high-level semantics, becomes one of the most...
A Survey of 3D Head Model Retrieval
Found in: Intelligent Computation Technology and Automation, International Conference on
By Boyong Gao, Sanyuan Zhang
Issue Date:October 2009
pp. 515-519
To retrieve non-rigid models and models of free-form surfaces is in actual demand, and the retrieval of 3D head models is very important in the field of entertainment, graphics design industry and medicine. Therefore, researchers are paying more attention ...
Human Pose Tracking Algorithm Based on Skeleton-Texture Model
Found in: Future Computer and Communication, International Conference on
By Yi Ouyang, Sanyuan Zhang
Issue Date:June 2009
pp. 23-27
In order to achieve good tracking results in single camera environment, the human pose of recognition, based on a skeleton and texture model of video algorithms to identify the body is proposed. Single-camera in the background and complexity of the environ...
Texture Image Retrieval Based on Rotated Complex Wavelet Signatures
Found in: International Conference on Natural Computation
By Rui Xing, Sanyuan Zhang, Leqing Zhu
Issue Date:October 2008
pp. 266-271
In this paper, we propose a new approach of extracting texture features for texture image retrieval. A set of rotated wavelet filters (RCWF) is used jointly with dual-tree complex wavelet transform (DT-CWT) for texture analysis in twelve different directio...
A Novel Mesh Quad-segmentation Algorithm
Found in: Computer and Computational Sciences, International Multi-Symposiums on
By Jiang Qian, Xiuzi Ye, Cuihao Fang, Hao Fang, Sanyuan Zhang
Issue Date:August 2007
pp. 279-285
Great efforts have been devoted to seamless quadrangulation of triangular mesh for its practical application in constructing surface patches. This type of algorithm sets up a parameterization on the triangular mesh and a re-meshing is carried out then to t...
A novel simplification algorithm for point-sampled surfaces
Found in: Multimedia and Ubiquitous Engineering, International Conference on
By Renfang Wang, Sanyuan Zhang, Xiuzi Ye
Issue Date:April 2007
pp. 573-578
The surface simplification of point-sampled geometry is one of the key preprocessing techniques for subsequent modeling and visualization algorithms. Based on geometry images, in the paper, we put forward a novel simplification algorithm for pointsampled s...
Point Set Surfaces Representations Based on Hierarchical Geometry Images
Found in: Computer and Computational Sciences, International Multi-Symposiums on
By Guoliang Mo, Sanyuan Zhang
Issue Date:June 2006
pp. 214-219
Point set surface is attracting more and more attentions in computer graphics and CAD industry, and gradually becoming one of the main 3D model representations. This paper presents a new method for multi-resolution representations of point set surface that...
Multi-level access control for collaborative CAD
Found in: International Conference on Computer Supported Cooperative Work in Design
By Cuihao Fang, Wei Peng, Xiuzi Ye, Sanyuan Zhang
Issue Date:May 2005
pp. 643-648 Vol. 1
Access control is one of the key steps to ensuring the availability, confidentiality and integrity of system resources. While it has been fully applied in various network systems, it's still relatively new for collaborative CAD. This paper provides a new f...
3D Mesh Segmentation Using a Two-Stage Merging Strategy
Found in: Computer and Information Technology, International Conference on
By Xiang Pan, Xiuzi Ye, Sanyuan Zhang
Issue Date:September 2004
pp. 730-733
3D mesh segmentation has been widely used in fields such as Computer Vision. Existing algorithms have the problems of over- and under-merging when performing 3D mesh segmentation. In this paper, we propose a robust and efficient segmentation algorithm usin...
Approximate the swept volume of revolutions along curved trajectories
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By Sanyuan Zhang, Xiuzi Ye, Zhiqi Xu, Zhiyang Chen
Issue Date:June 2007
pp. 309-314
Swept volume has been applied to many applications areas such as NC machining simulation and verification, robot workspace analysis, collision detection, and CAD. The numerical computation of swept volume remains to be a very challenging problem in terms o...