(a) image
(b) Ground Truth
(c) NFA+RNFA, R =0.83, P = 0.88, F = 0.86
(d) RNFAEdge, R =0.78, P = 0.89, F = 0.83
(e) CannyLines, R =0.79, P = 0.79, F = 0.79
(f) EDLines, R =0.44, P = 0.70, F = 0.54
(g) LSD, R =0.56, P = 0.85, F = 0.68