(a) image

(b) Ground Truth

(c) RNFA, R =0.70, P = 0.41, F = 0.52

(d) EDPF, R =0.77, P = 0.23, F = 0.35

(e) SREdge, R =0.86, P = 0.17, F = 0.28

(f) ED, R =0.88, P = 0.14, F = 0.24

(g) CannyPF, R =0.86, P = 0.14, F = 0.24