Feature-Preserving Volume Data Reduction and Focus+Context Visualization

— 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 multiresolutio...

• Type: Journal
• Year: 2011
• Where: TVCG
• Authors: Yu-Shuen Wang, Chaoli Wang, Tong-Yee Lee, Kwan-Liu Ma
• Keywords: Data Reduction, Transfer Function, TVCG 2011, Volume Data