(a) image

(b) Ground Truth

(c) RNFA, R =0.40, P = 0.52, F = 0.45

(d) EDPF, R =0.59, P = 0.29, F = 0.39

(e) SREdge, R =0.58, P = 0.36, F = 0.45

(f) ED, R =0.61, P = 0.27, F = 0.38

(g) CannyPF, R =0.61, P = 0.20, F = 0.30