(a) image

(b) Ground Truth

(c) RNFA, R =0.83, P = 0.75, F = 0.79

(d) EDPF, R =0.82, P = 0.63, F = 0.71

(e) SREdge, R =0.85, P = 0.60, F = 0.70

(f) ED, R =0.93, P = 0.53, F = 0.68

(g) CannyPF, R =0.92, P = 0.60, F = 0.73