CUED Publications database

Towards a complete dense geometric and photometric reconstruction under varying pose and illumination

Weber, M and Blake, A and Cipolla, R (2004) Towards a complete dense geometric and photometric reconstruction under varying pose and illumination. Image and Vision Computing, 22. pp. 787-793. ISSN 0262-8856

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This paper proposes a novel framework to construct a geometric and photometric model of a viewed object that can be used for visualisation in arbitrary pose and illumination. The method is solely based on images and does not require any specialised equipment. We assume that the object has a piece-wise smooth surface and that its reflectance can be modelled using a parametric bidirectional reflectance distribution function. Without assuming any prior knowledge on the object, geometry and reflectance have to be estimated simultaneously and occlusion and shadows have to be treated consistently. We exploit the geometric and photometric consistency using the fact that surface orientation and reflectance are local invariants. In a first implementation, we demonstrate the method using a Lambertian object placed on a turn-table and illuminated by a number of unknown point light-sources. A discrete voxel model is initialised to the visual hull and voxels identified as inconsistent with the invariants are removed iteratively. The resulting model is used to render images in novel pose and illumination. © 2004 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Dense reconstruction Reflectance Shape Stereo with changing illumination
Divisions: Div F > Machine Intelligence
Depositing User: Cron job
Date Deposited: 16 Jul 2015 13:54
Last Modified: 30 Nov 2015 15:41
DOI: 10.1016/j.imavis.2004.02.010