| 2009 2008 2007 2006 2005 2004 Before 2004 |
 Wei Chen, Xiao Liang, Ross Maciejewski, David S.Ebert To appear Journal of Computer Graphics Forum 2008 In this paper we present a novel 2D shape context preserving image manipulation approach which constructs and manipulates a 2D mesh with a new differential mesh editing algorithm. We introduce a novel shape context descriptor and integrate it into the deformation framework, facilitating shape-preserving deformation for 2D anatomical illustrations. Our new scheme utilizes an analogy based shape transfer technique in order to learn shape styles from reference images. Experimental results show that visually plausible deformation can be quickly generated from an existing example at interactive frame rates. An experienced artist has evaluated our approach and his feedback is quite encouraging. pdf video bibtex |
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Wei Chen, Song Zhang, Stephan Correia, David S. Ebert Journal of Computer Graphics Forum (Proceedings of EuroVis 2008) May 2008 Diffusion tensor imaging (DTI) has been used to generate fibrous structures in both brain white matter and muscles.Fiber clustering groups the DTI fibers into spatially and anatomically related tracts. As an increasing number of fiber clustering methods have been recently developed, it is important to display, compare, and explore the clustering results efficiently and effectively. In this paper, we present an anatomical visualization technique that reduces the geometric complexity of the fiber tracts and emphasizes the high-level structures. Beginning with a volumetric diffusion tensor image, we first construct a hierarchical clustering representation of the fiber bundles. These bundles are then reformulated into a 3D multi-valued volume data. We then build a set of geometric hulls and principal fibers to approximate the shape and orientation of each fiber bundle. By simultaneously visualizing the geometric hulls, individual fibers, and other data sets such as fractional anisotropy, the overall shape of the fiber tracts are highlighted, while preserving the fibrous details. A rater with expert knowledge of white matter structure has evaluated the resulting interactive illustration and confirmed the improvement over straightforward DTI fiber tract visualization. pdf video bibtex |
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Yun Zeng, Dimitris Samaras, Wei Chen, Qunsheng Peng Journal of Computer Vision and Image Understanding 2008 nothing pdf video bibtex |
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Guanghua Tan, Wei Chen, Ligang Liu Proceedings of Pacific Graphics 2008 2008 nothing pdf videobibtex |
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Chunxiao Liu, Yingzhen Yang, Qunsheng Peng, Jin Wang, Wei Chen Journal Computer Graphics Forum(Proceedings of Pacific Graphics 2008) 2008 nothing pdf video bibtex |
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Bill Andrews, Stefan Bruckner, Wei Chen , Carlos D. Correa, David S. Ebert, Mario Costa Sousa, Ivan Viola In Eurographics Tutorials 2008 nothing pdf video bibtex |
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Ross Maciejewski, Tobias Isenberg, William Andrews, David Ebert, Mario Costa-Sousa, Wei Chen IEEE Computer Graphics and Applications 2008 nothing pdf video bibtex |
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Yi Gong, Wei Chen, Long Zhang, Yun Zeng, Qunsheng Peng The Visual Computer Feb 2008 nothing pdf video bibtex |