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Displaying 1-10 out of 10 total
Cylinder Detection in Large-Scale Point Cloud of Pipeline Plant
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yong-Jin Liu, Jun-Bin Zhang, Ji-Chun Hou, Ji-Cheng Ren, Wei-Qing Tang
Issue Date:October 2013
pp. 1700-1707
The huge number of points scanned from pipeline plants make the plant reconstruction very difficult. Traditional cylinder detection methods cannot be applied directly due to the high computational complexity. In this paper, we explore the structural charac...
Delaunay/Voronoi Dual Representation of Smooth 2-Manifolds
Found in: Computer-Aided Design and Computer Graphics, International Conference on
By Wen-Yong Gong,Yong-Jin Liu,Tie-Ru Wu
Issue Date:September 2011
pp. 494-501
Delaunay triangulation and Voronoi diagram are widely used in computer graphics, computational geometry and other fields. Different from the planar case, Delaunay triangulation of a point set on smooth 2-manifolds does not always exist. In this paper we pr...
2-Manifold Surface Sampling and Quality Estimation of Reconstructed Meshes
Found in: International Symposium on Voronoi Diagrams in Science and Engineering
By Wen-Yong Gong, Yong-Jin Liu, Kai Tang, Tie-Ru Wu
Issue Date:June 2011
pp. 15-22
Construction of intrinsic Delaunay triangulation (iDt for short) on 2-manifolds has attracted considerable attentions recently, due to its theoretical contributions to surface reconstruction. In this paper we analyze a 2-manifold sampling criterion based o...
Construction of Iso-Contours, Bisectors, and Voronoi Diagrams on Triangulated Surfaces
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Yong-Jin Liu, Zhan-Qing Chen, Kai Tang
Issue Date:August 2011
pp. 1502-1517
In the research of computer vision and machine perception, 3D objects are usually represented by 2-manifold triangular meshes {\cal M}. In this paper, we present practical and efficient algorithms to construct iso-contours, bisectors, and Voronoi diagrams ...
Fairing wireframes in industrial surface design
Found in: Shape Modeling and Applications, International Conference on
By Yu-Kun Lai, Yong-Jin Liu, Yu Zang, Shi-Min Hu
Issue Date:June 2008
pp. 29-35
Wireframe is a modeling tool widely used in industrial geometric design. The term wireframe refers to two sets of curves, with the property that each curve from one set intersects with each curve from the other set. Akin to the u-, v-isocurves in a tensor-...
Developable Strip Approximation of Parametric Surfaces with Global Error Bounds
Found in: Computer Graphics and Applications, Pacific Conference on
By Yong-Jin Liu, Yu-Kun Lai, Shi-Min Hu
Issue Date:November 2007
pp. 441-444
Developable surfaces have many desired properties in manufacturing process. Since most existing CAD systems utilize parametric surfaces as the design primitive, there is a great demand in industry to convert a parametric surface within a prescribed global ...
Efficient and Stable Numerical Algorithms on Equilibrium Equations for Geometric Modeling
Found in: Geometric Modeling and Processing
By Yong-Jin Liu, Kai Tang, Matthew Ming-Fai Yuen
Issue Date:April 2004
pp. 291
In this paper the applications of equilibrium equation to geometric modeling is exploited and efficient numerical algorithms are proposed for solving the equilibrium equation. First we show that from diverse geometric modeling applications the equilibrium ...
Optimal-Scaling-Factor Assignment for Patch-wise Image Retargeting
Found in: IEEE Computer Graphics and Applications
By Yun Liang, Yong-Jin Liu, Xiao-Nan Luo, Lexing Xie, Xiaolan Fu
Issue Date:September 2013
pp. 68-78
Image retargeting adjusts images to arbitrary sizes such that they can be viewed on different displays. Content-aware image retargeting has been receiving increased attention. In particular, researchers have improved a patch-wise scaling method for image r...
CASME database: A dataset of spontaneous micro-expressions collected from neutralized faces
Found in: 2013 10th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2013)
By Wen-Jing Yan,Qi Wu, Yong-Jin Liu, Su-Jing Wang,Xiaolan Fu
Issue Date:April 2013
pp. 1-7
Micro-expressions are facial expressions which are fleeting and reveal genuine emotions that people try to conceal. These are important clues for detecting lies and dangerous behaviors and therefore have potential applications in various fields such as the...
EasyToy: Plush Toy Design Using Editable Sketching Curves
Found in: IEEE Computer Graphics and Applications
By Yong-Jin Liu, Cui-Xia Ma, Dong-Liang Zhang
Issue Date:March 2011
pp. 49-57
EasyToy is an industrial plush toy design system for novices. Editable sketching curves combine the advantages of free-form strokes and the controllability of B-spline curves. Users can continuously edit each curve to refine designs. EasyToy provides a sma...