(a) image

(b) Ground Truth

(c) RNFA, R =0.76, P = 0.58, F = 0.66

(d) EDPF, R =0.87, P = 0.25, F = 0.38

(e) SREdge, R =0.88, P = 0.30, F = 0.45

(f) ED, R =0.88, P = 0.22, F = 0.36

(g) CannyPF, R =0.92, P = 0.11, F = 0.20