Interactive Media Systems, TU Vienna

The Inverse Warp: Non-Invasive Integration of Shear-Warp Volume Rendering into Polygon Rendering Pipelines

By Stefan Bruckner, Dieter Schmalstieg, Helwig Hauser, and Eduard Gröller

Abstract

In this paper, a simple and efficient solution for combining shear-warp volume rendering and the hardware graphics pipeline is presented. The approach applies an inverse warp transformation to the Z-Buffer, containing the rendered geometry. This information is used for correctly combining geometry and volume data during compositing. We present applications of this concept which include hybrid volume rendering, i.e., concurrent rendering of polygonal objects and volume data, and volume clipping on convex clipping regions. Furthermore, it can be used to efficiently define regions with different rendering modes and transfer functions for focus+ context volume rendering. Empirical results show that the approach has minimal impact on performance.

Reference

St. Bruckner, D. Schmalstieg, H. Hauser, E. Gröller: "The Inverse Warp: Non-Invasive Integration of Shear-Warp Volume Rendering into Polygon Rendering Pipelines"; in: "Workshop on Vision, Modeling and Visualization", T. Ertl, B. Girod, G. Greiner, H. Niemann, H.-P. Seidel, E. Steinbach, R. Westermann (ed.); infix, 2003, ISBN: 3898380483, 665 - 666.

BibTeX

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