TitleMultiresolution Techniques for Interactive Texture-Based Volume Visualization (In Proceedings)
inVisual Data Exploration and Analysis VII
Author(s) Eric C. LaMar, Mark A. Duchaineau, Bernd Hamann, Ken Joy
Editor(s) Robert F. Erbacher, Philip C. Chen, Jonathan C. Roberts, Craig M. Wittenbrink
Year 2000
PublisherThe International Society for Optical Engineering
AddressBellingham, Washington
Abstract We present a multiresolution technique for interactive texture based rendering of arbitrarily oriented cutting planes for very large data sets. This method uses an adaptive scheme that renders the data along a cutting plane at different resolutions: higher resolution near the point-of-interest and lower resolution away from the point-of-interest. The algorithm is based on the segmentation of texture space into an octree, where the leaves of the tree define the original data and the internal nodes de ne lower-resolution versions. Rendering is done adaptively by selecting high-resolution cells close to a center of attention and low-resolution cells away from it. We limit the artifacts introduced by this method by blending between different levels of resolution to produce a smooth image. This technique can be used to produce viewpointdependent renderings.