(a) image

(b) Ground Truth

(c) RNFA, R =0.60, P = 0.88, F = 0.71

(d) EDPF, R =0.80, P = 0.62, F = 0.70

(e) SREdge, R =0.63, P = 0.75, F = 0.68

(f) ED, R =0.61, P = 0.74, F = 0.67

(g) CannyPF, R =0.90, P = 0.48, F = 0.63