(a) image

(b) Ground Truth

(c) RNFA, R =0.88, P = 0.71, F = 0.79

(d) EDPF, R =0.88, P = 0.70, F = 0.78

(e) SREdge, R =0.81, P = 0.72, F = 0.76

(f) ED, R =0.86, P = 0.59, F = 0.70

(g) CannyPF, R =0.93, P = 0.48, F = 0.63