We present a simple method to render complex 3D models at interactive rates using real-time displacement mapping. We use an octree to decompose the 3D model into a set of height fields and display...
Abstract Adaptive T-spline Surface Fitting to Z-Map Models (2008)
Jianmin Zheng, Yimin Wang, Hock Soon Seah
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...
CONVERSION BETWEEN T-SPLINES AND HIERARCHICAL B-SPLINES (2008)
Yimin Wang, Jianmin Zheng, Hock Soon Seah
T-splines is a recently developed surface modelling technique which is a generalization of B-splines and allows true local refinement. Another well established method supporting local refinement is...
Thomas W. Sederberg, Jianmin Zheng, Kris Klimaszewski, Tor Dokken, Prof Thomas, W. Sederberg
This paper presents an approach to nding an approximate implicit equation and an approximate inversion map of a planar rational parametric curve or a rational parametric surface. High accuracy of the...
Xiaowen Song, Thomas W. Sederberg, Jianmin Zheng, Rida T. Farouki, Joel Hass
By applying displacement maps to slightly perturb two free--form surfaces, one can ensure exact agreement between the images in of parameter-- domain approximations to their curve of intersection....
Visual Comput (2005) 21: 242–251 DOI 10.1007/s00371-005-0285-3 ORIGINAL ARTICLE (2005)
Jianmin Zheng, Yiyu Cai, Jianmin Zheng, Yiyu Cai
Constructing smooth surfaces of arbitrary topology is an important but difficult task in computer graphics and geometric modeling [13]. As an industry standard, nonuniform rational B-spline surfaces...
Knot intervals and multi degree splines (2003)
Thomas W. Sederberg, Jianmin Zheng, Xiaowen Song
This paper studies the merits of using knot interval notation for B-spline curves, and presents formulae in terms of knot intervals for common B-spline operations such as knot insertion,...
David Cardon, Jianmin Zheng, Xiaowen Song
This note conjectures that if two surface patches intersect with G 1 continuity along an entire curve, the probability is one that the curve is rational. This idea has significance for surface...
Non-Uniform Recursive Subdivision Surfaces (1998)
Thomas W. Sederberg, Jianmin Zheng, David Sewell, Malcolm Sabin
Doo-Sabin and Catmull-Clark subdivision surfaces are based on the notion of repeated knot insertion of uniform tensor product B-spline surfaces. This paper develops rules for non-uniform Doo-Sabin...
To Be, or Not to Be: Rural Women's Migration Decisions
Yu Song, Jianmin Zheng, Wenrong Qian
This study seeks to identify the determinants of rural women's migration decisions with a sample of 335 migrant women and 204 nonmigrant women in sixteen cities of the Yangtze delta in 2006. We study...