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Recovering refined surface normals for relighting clothing in dynamic scenes

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3 Author(s)
Csakany, P. ; Centre for Vision speech & Signal Process., Univ. of Surrey, Guildford ; Vajda, F. ; Hilton, A.

In this paper we present a method to relight captured 3D video sequences of non-rigid, dynamic scenes, such as clothing of real actors, reconstructed from multiple view video. A view-dependent approach is introduced to refine an initial coarse surface reconstruction using shape-from-shading to estimate detailed surface normals. The prior surface approximation is used to constrain the simultaneous estimation of surface normals and scene illumination, under the assumption of Lambertian surface reflectance. This approach enables detailed surface normals of a moving non-rigid object to be estimated from a single image frame. Refined normal estimates from multiple views are integrated into a single surface normal map. This approach allows highly non-rigid surfaces, such as creases in clothing, to be relit whilst preserving the detailed dynamics observed in video.

Published in:

Visual Media Production, 2007. IETCVMP. 4th European Conference on

Date of Conference:

27-28 Nov. 2007