(a) image
(b) Ground Truth
(c) RNFA, R =0.76, P = 0.66, F = 0.71
(d) EDPF, R =0.88, P = 0.56, F = 0.59
(e) SREdge, R =0.80, P = 0.56, F = 0.65
(f) ED, R =0.82, P = 0.50, F = 0.62
(g) CannyPF, R =0.91, P = 0.55, F = 0.69