(a) image

(b) Ground Truth

(c) RNFA, R =0.57, P = 0.46, F = 0.51

(d) EDPF, R =0.67, P = 0.28, F = 0.40

(e) SREdge, R =0.85, P = 0.18, F = 0.40

(f) ED, R =0.86, P = 0.15, F = 0.25

(g) CannyPF, R =0.86, P = 0.15, F = 0.25