(a) image

(b) Ground Truth

(c) RNFA, R =0.78, P = 0.70, F = 0.74

(d) EDPF, R =0.76, P = 0.54, F = 0.63

(e) SREdge, R =0.79, P = 0.47, F = 0.59

(f) ED, R =0.83, P = 0.41, F = 0.55

(g) CannyPF, R =0.87, P = 0.35, F = 0.50