Results 241 to 250 of about 12,277,297 (302)

Quasi-interpolation for analysis-suitable T-splines

Computer Aided Geometric Design, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hongmei Kang, Zhiguo Yong, Xin Li 0021
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Effective re-parameterization and GA based knot structure optimization for high quality T-spline surface fitting

Computer Methods in Applied Mechanics and Engineering, 2019
T-spline surface fitting from input triangular mesh is a common task in T-splines related CAD applications. One major objective to this problem is creating T-spline surface with fewer control points and higher accuracy.
Ce Shang, Jianzhong Fu, Jiawei Feng, Zhiwei Lin, Bin Li   +4 more
semanticscholar   +1 more source

Watermarking T-Spline surfaces

2008 11th IEEE International Conference on Communication Technology, 2008
This paper proposes two data embedding algorithms for T-spline surfaces, one is suitable for steganography, and the other for robust shape-preserving watermarking. For steganography, we embed data into the points on T-spline surfaces by using constrained optimization method. For robust shape-preserving watermarking, we use the local knot insertion of T-
null Weng Bin, null Pan Ri-jing, null Yao Zhi-qiang, null Yang Shan-chao, null Feng Xiao-qing, null Pan Zhi-geng   +5 more
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Trigonometric generalized T-splines

Computer Methods in Applied Mechanics and Engineering, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bracco, Cesare, Berdinsky, Dmitry, Cho, Durkbin, Oh, Min-jae, Kim, Tae-wan   +4 more
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Local T-spline surface skinning with shape preservation

Comput. Aided Des., 2018
Surface skinning is a surface generation method that uses a set of given cross-sectional curves, and it is widely used in free-form surface design. In the B-spline surface skinning, the given B-spline curves should be compatible, that is, the curves ...
Min-jae Oh, M. Roh, Tae-wan Kim
semanticscholar   +1 more source

A trivariate T-spline based framework for modeling heterogeneous solids

Computer Aided Geometric Design, 2020
We present a robust framework to conduct material modeling suitable for continuously varying materials with a local material composition control. The geometry and attribute representations are defined using two trivariate T-splines based on the same ...
Bin Li, Jianzhong Fu, Y. Zhang, Aishwarya Pawar   +3 more
semanticscholar   +1 more source

T-splines and T-NURCCs

ACM SIGGRAPH 2003 Papers, 2003
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 consistent framework, such as local refinement, and the merging of several B-spline ...
Thomas W. Sederberg, Jianmin Zheng, Almaz Bakenov, Ahmad Nasri   +3 more
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STEP-NC compliant data model for freeform surface manufacturing based on T-spline

International journal of computer integrated manufacturing (Print), 2019
STEP-NC is a new interface standard between CAD/CAM and CNC. Most of the studies focus on the 2.5D features machining using STEP-NC. However, freeform surface is widely used in the field of aerospace, automotive and dies/moulds.
Yazui Liu, Gang Zhao, O. Zavalnyi, W. Xiao   +3 more
semanticscholar   +1 more source

On the Nesting Behavior of T-splines

2011
Abstract : We establish rigorously the fundamental nesting behavior of T-spline spaces in terms of the topology of the T-mesh. This provides a theoretical foundation for local refinement algorithms based on analysis-suitable T-splines and their use in isogeometric analysis. A key result is a dimension formula for smooth polynomial spline spaces defined
M. A. Scott, X. Li
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Free-form deformation with weighted T-spline

The Visual Computer, 2005
A new method of free-form deformation, w-TFFD, is proposed, for which an original shape is deformed using weighted T-spline volumes. We generalize T-splines to weighted T-spline volumes that also permit T-junctions. Weighted T-spline volumes are a natural generalization of NURBS volumes but permit more flexible control lattices. Thus, w-TFFD holds many
Wenhao Song, Xunnian Yang
openaire   +1 more source