(a) image
(b) Ground Truth
(c) RNFA, R =0.75, P = 0.61, F = 0.68
(d) EDPF, R =0.78, P = 0.28, F = 0.41
(e) SREdge, R =0.85, P = 0.19, F = 0.31
(f) ED, R =0.87, P = 0.15, F = 0.26
(g) CannyPF, R =0.86, P = 0.14, F = 0.24