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Interactive Transfer Function Design Based on Editing Direct Volume Rendered Images
September/October 2007 (vol. 13 no. 5)
pp. 1027-1040
Yingcai Wu, IEEE
Huamin Qu, IEEE

Abstract—Direct volume rendered images (DVRIs) have been widely used to reveal structures in volumetric data. However, DVRIs generated by many volume visualization techniques can only partially satisfy users' demands. In this paper, we propose a framework for editing DVRIs, which can also be used for interactive transfer function (TF) design. Our approach allows users to fuse multiple features in distinct DVRIs into a comprehensive one, to blend two DVRIs, and/or to delete features in a DVRI. We further present how these editing operations can generate smooth animations for focus + context visualization. Experimental results on some real volumetric data demonstrate the effectiveness of our method.

Index Terms:
Direct volume rendering, image editing, intuitive user interface, morphing, transfer function design, focus + context, animation
Yingcai Wu, Huamin Qu, "Interactive Transfer Function Design Based on Editing Direct Volume Rendered Images," IEEE Transactions on Visualization and Computer Graphics, vol. 13, no. 5, pp. 1027-1040, Sept.-Oct. 2007, doi:10.1109/TVCG.2007.1051
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