Istituto di Scienza e Tecnologie dell'Informazione     
Bernabei D., Ganovelli F., Pietroni N., Cignoni P., Scopigno R. Real-time single scattering inside inhomogeneous materials. Technical report, 2009.
In this paper we propose a novel technique to perform real-time rendering of translucent inhomogeneous materi- als, one of the most well known problems of Computer Graphics. The developed technique is based on an adaptive volumetric point sampling, done in a preprocessing stage, which associate to each sample the optical depth for a predefined set of directions. This information is then used by a rendering algorithm that combines the object's surface rasterization with a ray tracing algorithm, implemented on the graphics processor, to compose the final image. This approach allows us to simulate light scattering phenomena for inhomogeneous isotropic materials in real time with a variable number of light sources. The proof of concept implementation provided demonstrates how the proposed technique is robust and efficient, and how it produces convincing visual results.
Subject Real Time rendering
I.3 Computer Graphics

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