Rendering Virtual Objects with High Dynamic Range Lighting Extracted Automatically from Unordered Photo Collections

Authors:
Konrad Kölzer;Frank Nagl;Bastian Birnbach;Paul Grimm
Affiliations:
Erfurt University of Applied Sciences, Germany;Erfurt University of Applied Sciences, Germany;Erfurt University of Applied Sciences, Germany;Erfurt University of Applied Sciences, Germany
Venue:
ISVC '09 Proceedings of the 5th International Symposium on Advances in Visual Computing: Part II
Year:
2009

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Abstract

In this paper, we present a novel technique for applying image-based lighting on virtual objects by constructing synthesized environment maps (SEM) automatically. In contrast to related work, we use unordered photo collections as input instead of a completely measured environmental lighting (so called light probe). Each image is interpreted as a spatial piece of a light probe. Thus, we accumulate all given pieces to a synthesized environment map by a given weight function. In addition, multiple coverage is used to increase the dynamic range. Finally, we show how this algorithm is applied for an interactive image-based Augmented Reality environment for virtual product presentations.