(a) image

(b) Ground Truth

(c) RNFA, R =0.78, P = 0.71, F = 0.74

(d) EDPF, R =0.85, P = 0.53, F = 0.65

(e) SREdge, R =0.74, P = 0.59, F = 0.66

(f) ED, R =0.78, P = 0.50, F = 0.61

(g) CannyPF, R =0.90, P = 0.48, F = 0.63