(a) image

(b) Ground Truth

(c) RNFA, R =0.75, P = 0.61, F = 0.68

(d) EDPF, R =0.78, P = 0.28, F = 0.41

(e) SREdge, R =0.85, P = 0.19, F = 0.31

(f) ED, R =0.87, P = 0.15, F = 0.26

(g) CannyPF, R =0.86, P = 0.14, F = 0.24