“Global illumination using precomputed light paths for interactive light condition manipulation”

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Title:

    Global illumination using precomputed light paths for interactive light condition manipulation

Abstract:


    In this paper, we propose an interactive rendering method for taking into account global illumination using light path precomputation and a hierarchical data structure for fast final gathering. Our method can render static scenes interactively allowing the user to move the viewpoint and the positions of local light sources. More-over, our method can change the materials (including the textures, diffuse and low-frequency glossy BRDFs) of objects at run-time. In recent years, many methods have been proposed to achieve interactive rendering by precomputing light transfer, for example, [Hasan et al. 2006]. These methods, however, do not allow the user to modify the materials of objects interactively.

References:


    1. Christensen, P. H., and Batali, D. 2004. An irradiance atlas for global illumination in complex production scenes. In Rendering Techniques, 133–142.
    2. Hasan, M., Pellacini, F., and Bala, K. 2006. Direct-to-indirect transfer for cinematic relighting. In SIGGRAPH ’06, ACM Press, New York, NY, USA, 1089–1097.


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