(a) image

(b) Ground Truth

(c) RNFA, R =0.78, P = 0.70, F = 0.73

(d) EDPF, R =0.81, P = 0.50, F = 0.62

(e) SREdge, R =0.85, P = 0.42, F = 0.56

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

(g) CannyPF, R =0.87, P = 0.26, F = 0.40