(a) image

(b) Ground Truth

(c) RNFA, R =0.76, P = 0.66, F = 0.71

(d) EDPF, R =0.88, P = 0.56, F = 0.59

(e) SREdge, R =0.80, P = 0.56, F = 0.65

(f) ED, R =0.82, P = 0.50, F = 0.62

(g) CannyPF, R =0.91, P = 0.55, F = 0.69