(a) image

(b) Ground Truth

(c) RNFA, R =0.52, P = 0.40, F = 0.45

(d) EDPF, R =0.72, P = 0.23, F = 0.35

(e) SREdge, R =0.74, P = 0.24, F = 0.37

(f) ED, R =0.73, P = 0.20, F = 0.32

(g) CannyPF, R =0.73, P = 0.16, F = 0.27