(a) image

(b) Ground Truth

(c) RNFA, R =0.90, P = 0.90, F = 0.90

(d) EDPF, R =0.89, P = 0.83, F = 0.86

(e) SREdge, R =0.89, P = 0.83, F = 0.86

(f) ED, R =0.93, P = 0.74, F = 0.82

(g) CannyPF, R =0.95, P = 0.60, F = 0.74