(a) image

(b) Ground Truth

(c) RNFA, R =0.90, P = 0.86, F = 0.88

(d) EDPF, R =0.88, P = 0.85, F = 0.87

(e) SREdge, R =0.83, P = 0.84, F = 0.84

(f) ED, R =0.88, P = 0.81, F = 0.84

(g) CannyPF, R =0.90, P = 0.80, F = 0.84