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Conference Paper

Efficient Rendering of Strong Secondary Lighting in Photon Mapping Algorithm

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Tawara,  Takehiro
Computer Graphics, MPI for Informatics, Max Planck Society;

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Myszkowski,  Karol
Computer Graphics, MPI for Informatics, Max Planck Society;

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Seidel,  Hans-Peter
Computer Graphics, MPI for Informatics, Max Planck Society;

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Citation

Tawara, T., Myszkowski, K., & Seidel, H.-P. (2004). Efficient Rendering of Strong Secondary Lighting in Photon Mapping Algorithm. In Theory and Practice of Computer Graphics 2004 (pp. 174-178). Los Alamitos, USA: IEEE.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-2A80-F
Abstract
In this paper we propose an efficient algorithm for handling strong secondary light sources within the photon mapping framework. We introduce an additional photon map as an implicit representation of such light sources. At the rendering stage this map is used for the explicit sampling of strong indirect lighting in a similar way as it is usually performed for primary light sources. Our technique works fully automatically, improves the computation performance, and leads to a better image quality than traditional rendering approaches.