Style Transfer Functions for Illustrative Volume Rendering

Authors: Bruckner, S.; Gröller, M. E.

Source: Computer Graphics Forum, Volume 26, Number 3, September 2007 , pp. 715-724(10)

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Abstract:

Illustrative volume visualization frequently employs non-photorealistic rendering techniques to enhance important features or to suppress unwanted details. However, it is difficult to integrate multiple non-photorealistic rendering approaches into a single framework due to great differences in the individual methods and their parameters. In this paper, we present the concept of style transfer functions. Our approach enables flexible data-driven illumination which goes beyond using the transfer function to just assign colors and opacities. An image-based lighting model uses sphere maps to represent non-photorealistic rendering styles. Style transfer functions allow us to combine a multitude of different shading styles in a single rendering. We extend this concept with a technique for curvature-controlled style contours and an illustrative transparency model. Our implementation of the presented methods allows interactive generation of high-quality volumetric illustrations.

Keywords: I.3.3 [Computer Graphics]: Picture/Image Generation; I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1467-8659.2007.01095.x

Affiliations: 1: Insitute of Computer Graphics and Algorithms Vienna University of Technology, Austria

Publication date: 2007-09-01