(a) image

(b) Ground Truth

(c) RNFA, R =0.59, P = 0.54, F = 0.56

(d) EDPF, R =0.77, P = 0.34, F = 0.47

(e) SREdge, R =0.82, P = 0.36, F = 0.50

(f) ED, R =0.84, P = 0.30, F = 0.44

(g) CannyPF, R =0.86, P = 0.29, F = 0.43