(a) image

(b) Ground Truth

(c) RNFA, R =0.89, P = 0.89, F = 0.89

(d) EDPF, R =0.86, P = 0.81, F = 0.83

(e) SREdge, R =0.78, P = 0.87, F = 0.82

(f) ED, R =0.79, P = 0.81, F = 0.80

(g) CannyPF, R =0.85, P = 0.85, F = 0.85