Efficient Rendering of Extrudable Curvilinear Volumes

Abstract

Efficient Rendering of Extrudable Curvilinear Volumes, IEEE  2008 Pacific Visualization Symposium, Steve Martin, Han-Wei Shen, and Ravi Samtaney

Publication

We present a technique for memory-efficient and time-efficient volume rendering of curvilinear adaptive mesh refinement data defined within extrudable computational spaces. One of the main challenges in the ray casting of curvilinear volumes is that a linear viewing ray in physical space will typically correspond to a curved ray in computational space. The proposed method utilizes a specialized representation of curvilinear space that provides for the compact representation of parameters for transformations between computational

space and physical space, without requiring extensive preprocessing. By simplifying the

representation of computational space

positions using an extrusion of a profile surface, the requisite transformations

can be greatly simplified. Our implementation achieves interactive rates with minimal load time and memory overhead using commodity graphics hardware with real-world data.

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The Ohio State University, Department of Computer Science and Engineering

395 Dreese Lab, 2015 Neil Avenue, Columbus OH 43210

Professor Han-Wei Shen

hwshen@cse.ohio-state.edu (V) 614 292 0060  (F) 614 2922911