(a) image

(b) Ground Truth

(c) NFA+RNFA, R =0.89, P = 0.86, F = 0.87

(d) RNFAEdge, R =0.88, P = 0.86, F = 0.87

(e) CannyLines, R =0.84, P = 0.88, F = 0.86

(f) EDLines, R =0.77, P = 0.80, F = 0.78

(g) LSD, R =0.83, P = 0.84, F = 0.83