(a) image
(b) Ground Truth
(c) RNFA, R =0.90, P = 0.88, F = 0.89
(d) EDPF, R =0.85, P = 0.80, F = 0.82
(e) SREdge, R =0.87, P = 0.77, F = 0.82
(f) ED, R =0.92, P = 0.63, F = 0.75
(g) CannyPF, R =0.92, P = 0.46, F = 0.61