(a) image

(b) Ground Truth

(c) RNFA, R =0.84, P = 0.89, F = 0.86

(d) EDPF, R =0.85, P = 0.73, F = 0.78

(e) SREdge, R =0.69, P = 0.83, F = 0.75

(f) ED, R =0.65, P = 0.83, F = 0.73

(g) CannyPF, R =0.83, P = 0.70, F = 0.76