(a) image

(b) Ground Truth

(c) RNFA, R =0.60, P = 0.51, F = 0.55

(d) EDPF, R =0.70, P = 0.35, F = 0.47

(e) SREdge, R =0.83, P = 0.31, F = 0.45

(f) ED, R =0.87, P = 0.25, F = 0.39

(g) CannyPF, R =0.84, P = 0.24, F = 0.38