Estimation de la réflectance à partir de données multi-vues


We introduce a variational framework for separating shading and reflectance from a series of images acquired under different angles, when the geometry has already been estimated by multi-view stereo. Our formulation uses an l-TV variational framework, where a robust photometricbased data term enforces adequation to the images, total variation ensures piecewise-smoothness of the reflectance, and an additional multi-view consistency term is introduced for solving the arising ambiguities. Optimisation is carried out using an alternating optimisation strategy building upon iteratively reweighted least-squares. Preliminary results on both a synthetic dataset, using various lighting and reflectance scenarios, and a real dataset, confirm the potential of the proposed approach.

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@inproceedings{Mlou2017EstimationDL, title={Estimation de la réflectance à partir de données multi-vues}, author={Jean M{\'e}lou and Yvain Qu{\'e}au and Jean-Denis Durou and Fabien Castan and Daniel Cremers}, year={2017} }