(a) image

(b) Ground Truth

(c) NFA+RNFA, R =0.82, P = 0.80, F = 0.81

(d) RNFAEdge, R =0.80, P = 0.80, F = 0.80

(e) CannyLines, R =0.80, P = 0.76, F = 0.78

(f) EDLines, R =0.56, P = 0.64, F = 0.60

(g) LSD, R =0.66, P = 0.71, F = 0.68