(a) image

(b) Ground Truth

(c) RNFA, R =0.75, P = 0.80, F = 0.77

(d) EDPF, R =0.77, P = 0.65, F = 0.70

(e) SREdge, R =0.77, P = 0.49, F = 0.60

(f) ED, R =0.85, P = 0.37, F = 0.51

(g) CannyPF, R =0.90, P = 0.18, F = 0.29