Fig. 15
From: Robust surface normal estimation via greedy sparse regression
Normal maps of the Venus dataset recovered using sparse methods. a Ground truth normal map. b Colour wheel and colour bar used for normal and angular error visualization, respectively. Angular error is measured in degrees. c, e, g, i Normal maps recovered using LS, OMP, IRL1 and SBL, respectively. d, f, h, j Angular error of normal maps recovered using the aforementioned methods