(a) image

(b) Ground Truth

(c) RNFA, R =0.77, P = 0.51, F = 0.61

(d) EDPF, R =0.85, P = 0.24, F = 0.37

(e) SREdge, R =0.92, P = 0.22, F = 0.35

(f) ED, R =0.93, P = 0.17, F = 0.29

(g) CannyPF, R =0.89, P = 0.15, F = 0.25