(a) image

(b) Ground Truth

(c) RNFA, R =0.78, P = 0.90, F = 0.84

(d) EDPF, R =0.74, P = 0.82, F = 0.78

(e) SREdge, R =0.64, P = 0.85, F = 0.73

(f) ED, R =0.69, P = 0.81, F = 0.74

(g) CannyPF, R =0.74, P = 0.86, F = 0.80