(a) image

(b) Ground Truth

(c) NFA+RNFA, R =0.90, P = 0.93, F = 0.91

(d) RNFAEdge, R =0.89, P = 0.88, F = 0.88

(e) CannyLines, R =0.76, P = 0.87, F = 0.81

(f) EDLines, R =0.64, P = 0.79, F = 0.71

(g) LSD, R =0.71, P = 0.82, F = 0.76