Abstractive Representation and Exploration of Hierarchically Clustered Diffusion Tensor Fiber Tracts
Wei Chen, Song Zhang, Stephan Correia, David S. Ebert
Journal of Computer Graphics Forum (Proceedings of EuroVis 2008), 27(3), May 2008, pp. 1071-1078.


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.

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Topology Cuts: A Novel Min-Cut/Max-Flow Algorithm for Topology Preserving Segmentation in N-D Images
Yun Zeng, Dimitris Samaras, Wei Chen, Qunsheng Peng
Journal of Computer Vision and Image Understanding,2008, 12(1), 81--90.

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Image Driven Shape Deformation with Styles
Guanghua Tan, Wei Chen, Ligang Liu
Proceedings of Pacific Graphics 2008

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Distortion Optimization based Image Completion from a Large Displacement View
Chunxiao Liu, Yingzhen Yang, Qunsheng Peng, Jin Wang, Wei Chen
Journal Computer Graphics Forum(Proceedings of Pacific Graphics 2008), 27 (7), 1055--1064.


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Interactive Tools for Scientific and Medical Illustration Composition
Bill Andrews, Stefan Bruckner, Wei Chen , Carlos D. Correa, David S. Ebert, Mario Costa Sousa, Ivan Viola
Eurographics Tutorials


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Measuring Stipple Aesthetics in Hand-Drawn and Computer-Generated Images
Ross Maciejewski, Tobias Isenberg, William Andrews, David Ebert, Mario Costa-Sousa, Wei Chen
IEEE Computer Graphics and Applications , 28(2), March/April, Vol28(2), 62-74.


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GPU-based rendering for deformable translucent objects
Yi Gong, Wei Chen, Long Zhang, Yun Zeng, Qunsheng Peng
The Visual Computer, 24(2), 95-103, Feb.2008.


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