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BBC R&D White Paper WHP143

Multi-camera radiometric surface modelling for image-based re-lighting
O. Grau

Keywords
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Abstract
This contribution describes an automatic method to retrieve the diffuse radiometric surface model of moving persons or other objects along with the object geometry using a multi-camera system. The multi-camera equipped studio allows synchronised capture of the foreground action and a visual hull computation is then used to compute a 3D model of that scene. The diffuse surface reflection parameters are computed using the 3D model from that process together with an illumination map of the studio. The illumination map is a high dynamic range image generated from a series of images of the studio using a camera equipped with a spherical (fish-eye) lens. With this setup our method is able to capture any action in the studio under normal lighting.

This document was originally published in Proc. of 28th DAGM Symposium, September 12-14, 2006, Berlin, Germany.