(a) image

(b) Ground Truth

(c) RNFA, R =0.81, P = 0.71, F = 0.76

(d) EDPF, R =0.78, P = 0.64, F = 0.71

(e) SREdge, R =0.62, P = 0.59, F = 0.60

(f) ED, R =0.63, P = 0.55, F = 0.59

(g) CannyPF, R =0.74, P = 0.57, F = 0.64