A rendering framework for multiscale views of 3D models
Proceedings of the 2011 SIGGRAPH Asia Conference
Depth of field effects for interactive direct volume rendering
EuroVis'11 Proceedings of the 13th Eurographics / IEEE - VGTC conference on Visualization
Using graph layout to generalise focus+context image magnification and distortion
Proceedings of the 27th Conference on Image and Vision Computing New Zealand
Drilling into complex 3D models with gimlenses
Proceedings of the 19th ACM Symposium on Virtual Reality Software and Technology
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The growing sizes of volumetric data sets pose a great challenge for interactive visualization. In this paper, we present a feature-preserving data reduction and focus+context visualization method based on transfer function driven, continuous voxel repositioning and resampling techniques. Rendering reduced data can enhance interactivity. Focus+context visualization can show details of selected features in context on display devices with limited resolution. Our method utilizes the input transfer function to assign importance values to regularly partitioned regions of the volume data. According to user interaction, it can then magnify regions corresponding to the features of interest while compressing the rest by deforming the 3D mesh. The level of data reduction achieved is significant enough to improve overall efficiency. By using continuous deformation, our method avoids the need to smooth the transition between low and high-resolution regions as often required by multiresolution methods. Furthermore, it is particularly attractive for focus+context visualization of multiple features. We demonstrate the effectiveness and efficiency of our method with several volume data sets from medical applications and scientific simulations.