(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