Obscurance-based volume rendering framework

Authors:
M. Ruiz;I. Boada;I. Viola;S. Bruckner;M. Feixas;M. Sbert
Affiliations:
Graphics and Imaging Laboratory, University of Girona, Spain;Graphics and Imaging Laboratory, University of Girona, Spain;Department of Informatics, University of Bergen, Norway;Institute of Computer Graphics and Algorithms, Vienna University of Technology, Austria;Graphics and Imaging Laboratory, University of Girona, Spain;Graphics and Imaging Laboratory, University of Girona, Spain
Venue:
SPBG'08 Proceedings of the Fifth Eurographics / IEEE VGTC conference on Point-Based Graphics
Year:
2008

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Abstract

Obscurances, from which ambient occlusion is a particular case, is a technology that produces natural-looking lighting effects in a faster way than global illumination. Its application in volume visualization is of special interest since it permits us to generate a high quality rendering at a low cost. In this paper, we propose an obscurancebased framework that allows us to obtain realistic and illustrative volume visualizations in an interactive manner. Obscurances can include color bleeding effects without additional cost. Moreover, we obtain a saliency map from the gradient of obscurances and we show its application to enhance volume visualization and to select the most salient views.