(a) image

(b) Ground Truth

(c) RNFA, R =0.61, P = 0.14, F = 0.23

(d) EDPF, R =0.69, P = 0.09, F = 0.17

(e) SREdge, R =0.85, P = 0.08, F = 0.15

(f) ED, R =0.88, P = 0.06, F = 0.11

(g) CannyPF, R =0.80, P = 0.06, F = 0.11