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Displaying 1-17 out of 17 total
Fast environment matting extraction using compressive sensing
Found in: Multimedia and Expo, IEEE International Conference on
By Qi Duan, Jianfei Cai, Jianmin Zheng, Weisi Lin
Issue Date:July 2011
pp. 1-6
The existing high-accuracy environment matting extraction methods usually require the capturing of thousands of sample images and spend several hours in data acquisition. In this paper, a fast environment matting algorithm is proposed to ex tract the envir...
Reference Plane Assisted Sketching Interface for 3D Freeform Shape Design
Found in: Cyberworlds, International Conference on
By Kai Wang, Jianmin Zheng, Hock-Soon Seah
Issue Date:October 2010
pp. 105-112
This paper presents a sketch-based modeling system with auxiliary planes as references for 3D freeform shape design. The user first creates a rough 3D model of arbitrary topology by sketching some contours of the model. Then the user can use sketching to p...
Rate-Distortion Optimized Progressive 3D Reconstruction from Multi-view Images
Found in: Pacific Conference on Computer Graphics and Applications
By Viet Nam Nghiem, Jianfei Cai, Jianmin Zheng
Issue Date:September 2010
pp. 70-77
Most of the previous multi-view reconstruction algorithms focus on minimizing reconstruction distortion, i.e. reconstructing a 3D model as close to the real object as possible, and rely on subsequent simplification process to control the reconstruction rat...
A diffusion approach to seeded image segmentation
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Juyong Zhang, Jianmin Zheng, Jianfei Cai
Issue Date:June 2010
pp. 2125-2132
Seeded image segmentation is a popular type of supervised image segmentation in computer vision and image processing. Previous methods of seeded image segmentation treat the image as a weighted graph and minimize an energy function on the graph to produce ...
Interactive Mesh Cutting Using Constrained Random Walks
Found in: IEEE Transactions on Visualization and Computer Graphics
By Juyong Zhang, Jianmin Zheng, Jianfei Cai
Issue Date:March 2011
pp. 357-367
This paper considers the problem of interactively finding the cutting contour to extract components from an existing mesh. First, we propose a constrained random walks algorithm that can add constraints to the random walks procedure and thus allows for a v...
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...
Interpolation over Arbitrary Topology Meshes Using a Two-Phase Subdivision Scheme
Found in: IEEE Transactions on Visualization and Computer Graphics
By Jianmin Zheng, Yiyu Cai
Issue Date:May 2006
pp. 301-310
<p><b>Abstract</b>—The construction of a smooth surface interpolating a mesh of arbitrary topological type is an important problem in many graphics applications. This paper presents a two-phase process, based on a topological modification...
Foldover-Free Mesh Warping for Constrained Texture Mapping
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yuewen Ma,Jianmin Zheng,Jian Xie
Issue Date:February 2015
pp. 1
Mapping texture onto 3D meshes with positional constraints is a popular technique that can effectively enhance the visual realism of geometric models. Such a process usually requires constructing a valid mesh embedding satisfying a set of positional constr...
A VR Simulator for Intracardiac Intervention
Found in: IEEE Computer Graphics and Applications
By P. Chiang, Jianmin Zheng, You Yu, Koon Hou Mak, Chee Kong Chui, Yiyu Cai
Issue Date:January 2013
pp. 44-57
A VR simulator provides low-cost, realistic training for intracardiac techniques for determining the heart's mechanical and electrical activities. A geometric method models interaction between a catheter and the heart wall. Boundary-enhanced voxelization a...
Reciprocal frame structures made easy
Found in: ACM Transactions on Graphics (TOG)
By Chi-Wing Fu, Daniel Cohen-Or, Jianmin Zheng, Niloy J. Mitra, Peng Song, Prashant Goswami
Issue Date:July 2013
pp. 1-13
A reciprocal frame (RF) is a self-supported three-dimensional structure made up of three or more sloping rods, which form a closed circuit, namely an RF-unit. Large RF-structures built as complex grillages of one or a few similar RF-units have an intrinsic...
Variational mesh decomposition
Found in: ACM Transactions on Graphics (TOG)
By Chunlin Wu, Jianfei Cai, Jianmin Zheng, Juyong Zhang
Issue Date:May 2012
pp. 1-14
The problem of decomposing a 3D mesh into meaningful segments (or parts) is of great practical importance in computer graphics. This article presents a variational mesh decomposition algorithm that can efficiently partition a mesh into a prescribed number ...
Including and optimizing shape parameters in Doo-Sabin subdivision surfaces for interpolation
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By Jianfei Cai, Jianmin Zheng, Wei Guan
Issue Date:June 2007
pp. 439-444
This paper considers the problems of how to introduce shape parameters into recursive subdivision schemes for additional shape control and how to find appropriate values of shape parameters to improve the quality of subdivision surface shapes. Following Br...
Adaptive T-spline surface fitting to z-map models
Found in: Proceedings of the 3rd international conference on Computer graphics and interactive techniques in Australasia and South East Asia (GRAPHITE '05)
By Hock Soon Seah, Jianmin Zheng, Yimin Wang
Issue Date:November 2005
pp. 405-411
Surface fitting refers to the process of constructing a smooth representation for an object surface from a fairly large number of measured 3D data points. This paper presents an automatic algorithm to construct smooth parametric surfaces using T-splines fr...
T-spline simplification and local refinement
Found in: ACM Transactions on Graphics (TOG)
By David L. Cardon, G. Thomas Finnigan, Jianmin Zheng, Nicholas S. North, Thomas W. Sederberg, Tom Lyche
Issue Date:August 2004
pp. 276-283
A typical NURBS surface model has a large percentage of superfluous control points that significantly interfere with the design process. This paper presents an algorithm for eliminating such superfluous control points, producing a T-spline. The algorithm c...
T-splines and T-NURCCs
Found in: ACM SIGGRAPH 2003 Papers (SIGGRAPH '03)
By Ahmad Nasri, Almaz Bakenov, Jianmin Zheng, Thomas W. Sederberg
Issue Date:July 2003
pp. 56-ff
This paper presents a generalization of non-uniform B-spline surfaces called T-splines. T-spline control grids permit T-junctions, so lines of control points need not traverse the entire control grid. T-splines support many valuable operations within a con...
Non-uniform recursive subdivision surfaces
Found in: Proceedings of the 25th annual conference on Computer graphics and interactive techniques (SIGGRAPH '98)
By David Sewell, Jianmin Zheng, Malcolm Sabin, Thomas W. Sederberg
Issue Date:July 1998
pp. 387-394
This paper describes a physically-based rendering system tailored to the demands of lighting design and architecture. The simulation uses a light-backwards ray-tracing method with extensions to efficiently solve the rendering equation under most conditions...
Estimating tessellation parameter intervals for rational curves and surfaces
Found in: ACM Transactions on Graphics (TOG)
By Jianmin Zheng, Thomas W. Sederberg
Issue Date:January 1991
pp. 56-77
This paper presents a method for determining a priori a constant parameter interval for tessellating a rational curve or surface such that the deviation of the curve or surface from its piecewise linear approximation is within a specified tolerance. The p...