(a) image

(b) Ground Truth

(c) RNFA, R =0.54, P = 0.68, F = 0.60

(d) EDPF, R =0.77, P = 0.19, F = 0.31

(e) SREdge, R =0.80, P = 0.22, F = 0.35

(f) ED, R =0.81, P = 0.16, F = 0.27

(g) CannyPF, R =0.82, P = 0.11, F = 0.19