(a) image
(b) Ground Truth
(c) RNFA, R =0.62, P = 0.32, F = 0.42
(d) EDPF, R =0.70, P = 0.22, F = 0.33
(e) SREdge, R =0.86, P = 0.16, F = 0.27
(f) ED, R =0.87, P = 0.13, F = 0.23
(g) CannyPF, R =0.83, P = 0.12, F = 0.21