(a) image

(b) Ground Truth

(c) RNFA, R =0.46, P = 0.25, F = 0.32

(d) EDPF, R =0.72, P = 0.11, F = 0.19

(e) SREdge, R =0.81, P = 0.12, F = 0.20

(f) ED, R =0.86, P = 0.09, F = 0.16

(g) CannyPF, R =0.83, P = 0.08, F = 0.14