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Displaying 1-10 out of 10 total
Bas-Relief Modeling from Normal Images with Intuitive Styles
Found in: IEEE Transactions on Visualization and Computer Graphics
By Zhongping Ji,Weiyin Ma,Xianfang Sun
Issue Date:May 2014
pp. 675-685
Traditional 3D model-based bas-relief modeling methods are often limited to model-dependent and monotonic relief styles. This paper presents a novel method for digital bas-relief modeling with intuitive style control. Given a composite normal image, the pr...
 
A new convexity measurement for 3D meshes
Found in: 2012 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
By Zhouhui Lian,A. Godil,P. L. Rosin, Xianfang Sun
Issue Date:June 2012
pp. 119-126
This paper presents a novel convexity measurement for 3D meshes. The new convexity measure is calculated by minimizing the ratio of the summed area of valid regions in a mesh's six views, which are projected on faces of the bounding box whose edges are par...
 
Visual Similarity Based 3D Shape Retrieval Using Bag-of-Features
Found in: Shape Modeling and Applications, International Conference on
By Zhouhui Lian, Afzal Godil, Xianfang Sun
Issue Date:June 2010
pp. 25-36
This paper presents a novel 3D shape retrieval method, which uses Bag-of-Features and an efficient multi-view shape matching scheme. In our approach, a properly normalized object is first described by a set of depth-buffer views captured on the surrounding...
 
Adaptive Synchronization of the Modified Chua's Circuit Systems
Found in: Computer Science and Information Engineering, World Congress on
By Lingling Tian, Donghai Li, Xianfang Sun
Issue Date:April 2009
pp. 254-258
This study addresses the synchronization of the modified Chua circuit systems with fully unknown parameters and nonlinearity in the control input. A simple robust controller with a single-state variable feedback and a nonlinear compensating mechanism is de...
 
Bas-Relief Generation Using Adaptive Histogram Equalization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xianfang Sun, Paul L. Rosin, Ralph R. Martin, Frank C. Langbein
Issue Date:July 2009
pp. 642-653
An algorithm is presented to automatically generate bas-reliefs based on adaptive histogram equalization (AHE), starting from an input height field. A mesh model may alternatively be provided, in which case a height field is first created via orthogonal or...
 
Noise in 3D laser range scanner data
Found in: Shape Modeling and Applications, International Conference on
By Xianfang Sun, Paul L. Rosin, Ralph R. Martin, Frank C. Langbein
Issue Date:June 2008
pp. 37-45
This paper discusses noise in range data measured by a Konica Minolta Vivid 910 scanner. Previous papers considering denoising 3D mesh data have often used artificial data comprising Gaussian noise, which is independently distributed at each mesh point. Me...
 
Fast and Effective Feature-Preserving Mesh Denoising
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xianfang Sun, Paul Rosin, Ralph Martin, Frank Langbein
Issue Date:September 2007
pp. 925-938
We present a simple and fast mesh denoising method, which can remove noise effectively, while preserving mesh features such as sharp edges and corners. The method consists of two stages. Firstly, noisy face normals are filtered iteratively by weighted aver...
 
Adaptive Feedback Linearization Control of a Flexible Spacecraft
Found in: Intelligent Systems Design and Applications, International Conference on
By Jinli Chen, Donghai Li, Xuezhi Jiang, Xianfang Sun
Issue Date:October 2006
pp. 225-230
Base on a kind of model estimator, this paper presents an adaptive feedback linearization control for the large-angle rotational maneuver and vibration suppression of a flexible spacecraft. The model estimator provides the approximate model information thr...
 
A rectilinearity measurement for 3d meshes
Found in: Proceeding of the 1st ACM international conference on Multimedia information retrieval (MIR '08)
By Paul L. Rosin, Xianfang Sun, Zhouhui Lian
Issue Date:October 2008
pp. 1-1
In this paper, we propose and evaluate a novel shape measurement describing the extent to which a 3D mesh is rectilinear. Since the rectilinearity measure corresponds proportionally to the ratio of the sum of three orthogonal projected areas and the surfac...
     
Random walks for mesh denoising
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By Frank C. Langbein, Paul L. Rosin, Ralph R. Martin, Xianfang Sun
Issue Date:June 2007
pp. 11-22
This paper considers an approach to mesh denoising based on the concept of random walks. The proposed method consists of two stages: a face normal filtering procedure, followed by a vertex position updating procedure which integrates the denoised face norm...
     
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