Fig. 20From: Robust surface normal estimation via greedy sparse regressionRecovery accuracy under highly biased lighting distribution. Polar plot shows the arrangement of lights. Upper and lower border of blue boxes represent third (Q3) and first (Q1) quartiles, respectively. Upper and lower whiskers show 1.0 IQR extended from Q3 and Q1, respectively. Red bars in blue boxes represent mediansBack to article page