(a) image

(b) Ground Truth

(c) NFA+RNFA, R =0.78, P = 0.86, F = 0.82

(d) RNFAEdge, R =0.80, P = 0.87, F = 0.83

(e) CannyLines, R =0.67, P = 0.73, F = 0.70

(f) EDLines, R =0.38, P = 0.50, F = 0.44

(g) LSD, R =0.59, P = 0.68, F = 0.63