(a) image

(b) Ground Truth

(c) RNFA, R =0.62, P = 0.43, F = 0.51

(d) EDPF, R =0.77, P = 0.31, F = 0.44

(e) SREdge, R =0.75, P = 0.41, F = 0.53

(f) ED, R =0.76, P = 0.36, F = 0.49

(g) CannyPF, R =0.76, P = 0.36, F = 0.49