(a) image

(b) Ground Truth

(c) RNFA, R =0.58, P = 0.72, F = 0.64

(d) EDPF, R =0.79, P = 0.28, F = 0.42

(e) SREdge, R =0.80, P = 0.35, F = 0.48

(f) ED, R =0.83, P = 0.25, F = 0.38

(g) CannyPF, R =0.88, P = 0.14, F = 0.24