(a) image

(b) Ground Truth

(c) RNFA, R =0.62, P = 0.32, F = 0.42

(d) EDPF, R =0.70, P = 0.22, F = 0.33

(e) SREdge, R =0.86, P = 0.16, F = 0.27

(f) ED, R =0.87, P = 0.13, F = 0.23

(g) CannyPF, R =0.83, P = 0.12, F = 0.21