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Light Weight Space Leaping Using Ray Coherence

By Sarang Lakare and Arie Kaufman


We present a space leaping technique for accelerating volume rendering with very low space and run-time complexity. Our technique exploits the ray coherence during ray casting by using the distance a ray traverses in empty space to leap its neighboring rays. Our technique works with parallel as well as perspective volume rendering, does not require any pre-processing or 3D data structures, and is independent of the transfer function. Being an image-space technique, it is independent of the complexity of the data being rendered. It can be used to accelerate both time-coherent and non coherent animation sequences

Topics: CR Categories, I.3.3 [Computer Graphics, Picture/Image Generation, I.3.4 [Computer Graphics, Graphics Utilities, I.3.7 [Computer Graphics, Three-Dimensional Graphics and Realism, Keywords, Direct Volume Rendering, Space Leaping, Empty Space Skipping, Ray Coherence, Volume Rendering Acceleration
Year: 2004
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