(a) image

(b) Ground Truth

(c) RNFA, R =0.82, P = 0.69, F = 0.75

(d) EDPF, R =0.76, P = 0.61, F = 0.68

(e) SREdge, R =0.82, P = 0.40, F = 0.54

(f) ED, R =0.88, P = 0.33, F = 0.48

(g) CannyPF, R =0.87, P = 0.29, F = 0.43