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Displaying 1-14 out of 14 total
Automatic and topology-preserving gradient mesh generation for image vectorization
Found in: ACM Transactions on Graphics (TOG)
By Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai, Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai, Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai, Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai
Issue Date:July 2009
pp. 1-2
Gradient mesh vector graphics representation, used in commercial software, is a regular grid with specified position and color, and their gradients, at each grid point. Gradient meshes can compactly represent smoothly changing data, and are typically used ...
     
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-...
 
SuperMatching: Feature Matching Using Supersymmetric Geometric Constraints
Found in: IEEE Transactions on Visualization and Computer Graphics
By Zhi-Quan Cheng, Yin Chen,R. R. Martin, Yu-Kun Lai, Aiping Wang
Issue Date:November 2013
pp. 1885-1894
Feature matching is a challenging problem at the heart of numerous computer graphics and computer vision applications. We present the SuperMatching algorithm for finding correspondences between two sets of features. It does so by considering triples or hig...
 
Generalized Anisotropic Stratified Surface Sampling
Found in: IEEE Transactions on Visualization and Computer Graphics
By J. A. Quinn,F. C. Langbein, Yu-Kun Lai,R. R. Martin
Issue Date:July 2013
pp. 1143-1157
We introduce a novel stratified sampling technique for mesh surfaces that gives the user control over sampling density and anisotropy via a tensor field. Our approach is based on sampling space-filling curves mapped onto mesh segments via parametrizations ...
 
Registration of 3D Point Clouds and Meshes: A Survey from Rigid to Nonrigid
Found in: IEEE Transactions on Visualization and Computer Graphics
By G. K. L. Tam, Zhi-Quan Cheng, Yu-Kun Lai,F. C. Langbein, Yonghuai Liu,D. Marshall,R. R. Martin, Xian-Fang Sun,P. L. Rosin
Issue Date:July 2013
pp. 1199-1217
Three-dimensional surface registration transforms multiple three-dimensional data sets into the same coordinate system so as to align overlapping components of these sets. Recent surveys have covered different aspects of either rigid or nonrigid registrati...
 
Metric-Driven RoSy Field Design and Remeshing
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yu-Kun Lai, Miao Jin, Xuexiang Xie, Ying He, Jonathan Palacios, Eugene Zhang, Shi-Min Hu, Xianfeng Gu
Issue Date:January 2010
pp. 95-108
Designing rotational symmetry fields on surfaces is an important task for a wide range of graphics applications. This work introduces a rigorous and practical approach for automatic N-RoSy field design on arbitrary surfaces with user-defined field topologi...
 
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 ...
 
Robust Feature Classification and Editing
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yu-Kun Lai, Qian-Yi Zhou, Shi-Min Hu, Johannes Wallner, Helmut Pottmann
Issue Date:January 2007
pp. 34-45
<p><b>Abstract</b>—Sharp edges, ridges, valleys, and prongs are critical for the appearance and an accurate representation of a 3D model. In this paper, we propose a novel approach that deals with the global shape of features in a robust ...
 
Diffusion pruning for rapidly and robustly selecting global correspondences using local isometry
Found in: ACM Transactions on Graphics (TOG)
By Gary K. L. Tam, Paul L. Rosin, Ralph R. Martin, Yu-Kun Lai
Issue Date:January 2014
pp. 1-17
Finding correspondences between two surfaces is a fundamental operation in various applications in computer graphics and related fields. Candidate correspondences can be found by matching local signatures, but as they only consider local geometry, many are...
     
Robust principal curvatures using feature adapted integral invariants
Found in: 2009 SIAM/ACM Joint Conference on Geometric and Physical Modeling (SPM '09)
By Shi-Min Hu, Tong Fang, Yu-Kun Lai
Issue Date:October 2009
pp. 325-330
Principal curvatures and principal directions are fundamental local geometric properties. They are well defined on smooth surfaces. However, due to the nature as higher order differential quantities, they are known to be sensitive to noise. A recent work b...
     
Automatic and topology-preserving gradient mesh generation for image vectorization
Found in: ACM SIGGRAPH 2009 papers (SIGGRAPH '09)
By Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai
Issue Date:August 2009
pp. 3-3
Gradient mesh vector graphics representation, used in commercial software, is a regular grid with specified position and color, and their gradients, at each grid point. Gradient meshes can compactly represent smoothly changing data, and are typically used ...
     
Fast mesh segmentation using random walks
Found in: Proceedings of the 2008 ACM symposium on Solid and physical modeling (SPM '08)
By Paul L. Rosin, Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai
Issue Date:June 2008
pp. 13-14
3D mesh models are now widely available for use in various applications. The demand for automatic model analysis and understanding is ever increasing. Mesh segmentation is an important step towards model understanding, and acts as a useful tool for differe...
     
An incremental approach to feature aligned quad dominant remeshing
Found in: Proceedings of the 2008 ACM symposium on Solid and physical modeling (SPM '08)
By Leif Kobbelt, Shi-Min Hu, Yu-Kun Lai
Issue Date:June 2008
pp. 13-14
In this paper we present a new algorithm which turns an unstructured triangle mesh into a quad-dominant mesh with edges aligned to the principal directions of the underlying geometry. Instead of computing a globally smooth parameterization or integrating c...
     
Feature sensitive mesh segmentation
Found in: Proceedings of the 2006 ACM symposium on Solid and physical modeling (SPM '06)
By Qian-Yi Zhou, Ralph R. Martin, Shi-Min Hu, Yu-Kun Lai
Issue Date:June 2006
pp. 17-25
Segmenting meshes into natural regions is useful for model understanding and many practical applications. In this paper, we present a novel, automatic algorithm for segmenting meshes into meaningful pieces. Our approach is a clustering-based top-down hiera...
     
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