(a) image

(b) Ground Truth

(c) RNFA, R =0.60, P = 0.69, F = 0.64

(d) EDPF, R =0.72, P = 0.48, F = 0.58

(e) SREdge, R =0.83, P = 0.42, F = 0.56

(f) ED, R =0.87, P = 0.32, F = 0.46

(g) CannyPF, R =0.85, P = 0.28, F = 0.42