Multi-view Gradient Consistency for SVBRDF Estimation of Complex Scenes under Natural Illumination
Some results from the technique detailed in the paper "Multi-view Gradient Consistency for SVBRDF Estimation of Complex Scenes under Natural Illumination" by Alen Joy and Charalambos Poullis.
TL;DR: The diffuse component is independent of the viewer's direction, therefore, when solving for BRDFs, the gradients from