Stylization-based ray prioritization for guaranteed frame rates
Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Non-Photorealistic Animation and Rendering
A new sampling scheme for slice based volume rendering
VG'10 Proceedings of the 8th IEEE/EG international conference on Volume Graphics
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We present a multiresolution technique for interactive texture-basedvolume visualization of very large data sets. This method uses anadaptive scheme that renders the volume in a region-of-interest ata high resolution and the volume away from this region at progressivelylower resolutions. The algorithm is based on the segmentationof texture space into an octree, where the leaves of the tree definethe original data and the internal nodes define lower-resolutionversions. Rendering is done adaptively by selecting high-resolutioncells close to a center of attention and low-resolution cells awayfrom this area. We limit the artifacts introduced by this method bymodifying the transfer functions in the lower-resolution data setsand utilizing spherical shells as a proxy geometry. It is possibleto use this technique to produce viewpoint-dependent renderings ofvery large data sets.