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Delta Light Propagation Volumes for Mixed Reality

Tobias Alexander Franke 2013 IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

Teaser A textured bust (left) is inserted into the scene, receiving red indirect light from the ground and casting a slight shadow.

Abstract

Indirect illumination is an important visual cue which has traditionally been neglected in mixed reality applications. We present Delta Light Propagation Volumes, a novel volumetric relighting method for real-time mixed reality applications which allows to simulate the effect of first bounce indirect illumination of synthetic objects onto a real geometry and vice versa. Inspired by Radiance Transfer Fields, we modify Light Propagation Volumes in such a way as to propagate the change in illumination caused by the introduction of a synthetic object into a real scene. This method combines real and virtual light in one representation, provides improved temporal coherence for indirect light compared to previous solutions and implicitly includes smooth shadows.

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Bibtex

@inproceedings{6671772, 
 author={Franke, Tobias Alexander}, 
 booktitle={Mixed and Augmented Reality (ISMAR), 2013 IEEE International Symposium on}, 
 title={Delta Light Propagation Volumes for Mixed Reality}, 
 year={2013}, 
 pages={125-132}, 
 keywords={Mixed Reality;Real-time Global Illumination}, 
 doi={10.1109/ISMAR.2013.6671772},
}

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