(a) image
(b) Ground Truth
(c) NFA+RNFA, R =0.79, P = 0.81, F = 0.80
(d) RNFAEdge, R =0.76, P = 0.82, F = 0.79
(e) CannyLines, R =0.60, P = 0.66, F = 0.63
(f) EDLines, R =0.44, P = 0.52, F = 0.48
(g) LSD, R =0.57, P = 0.66, F = 0.61