(a) image

(b) Ground Truth

(c) RNFA, R =0.83, P = 0.79, F = 0.81

(d) EDPF, R =0.82, P = 0.53, F = 0.65

(e) SREdge, R =0.74, P = 0.40, F = 0.52

(f) ED, R =0.78, P = 0.32, F = 0.45

(g) CannyPF, R =0.76, P = 0.29, F = 0.42