(a) image

(b) Ground Truth

(c) RNFA, R =0.33, P = 0.25, F = 0.29

(d) EDPF, R =0.54, P = 0.14, F = 0.23

(e) SREdge, R =0.67, P = 0.15, F = 0.24

(f) ED, R =0.70, P = 0.12, F = 0.21

(g) CannyPF, R =0.68, P = 0.12, F = 0.20