(a) image

(b) Ground Truth

(c) RNFA, R =0.64, P = 0.59, F = 0.61

(d) EDPF, R =0.79, P = 0.23, F = 0.36

(e) SREdge, R =0.81, P = 0.22, F = 0.35

(f) ED, R =0.84, P = 0.17, F = 0.29

(g) CannyPF, R =0.87, P = 0.13, F = 0.23