(a) image

(b) Ground Truth

(c) NFA+RNFA, R =0.92, P = 0.88, F = 0.90

(d) RNFAEdge, R =0.90, P = 0.90, F = 0.90

(e) CannyLines, R =0.86, P = 0.89, F = 0.87

(f) EDLines, R =0.71, P = 0.82, F = 0.76

(g) LSD, R =0.78, P = 0.85, F = 0.82