(a) image
(b) Ground Truth
(c) RNFA, R =0.90, P = 0.86, F = 0.88
(d) EDPF, R =0.88, P = 0.85, F = 0.87
(e) SREdge, R =0.83, P = 0.84, F = 0.84
(f) ED, R =0.88, P = 0.81, F = 0.84
(g) CannyPF, R =0.90, P = 0.80, F = 0.84