(a) image

(b) Ground Truth

(c) RNFA, R =0.76, P = 0.30, F = 0.43

(d) EDPF, R =0.80, P = 0.21, F = 0.33

(e) SREdge, R =0.87, P = 0.16, F = 0.27

(f) ED, R =0.88, P = 0.13, F = 0.23

(g) CannyPF, R =0.86, P = 0.13, F = 0.22