(a) image

(b) Ground Truth

(c) RNFA, R =0.90, P = 0.88, F = 0.89

(d) EDPF, R =0.85, P = 0.80, F = 0.82

(e) SREdge, R =0.87, P = 0.77, F = 0.82

(f) ED, R =0.92, P = 0.63, F = 0.75

(g) CannyPF, R =0.92, P = 0.46, F = 0.61