(a) image

(b) Ground Truth

(c) RNFA, R =0.56, P = 0.74, F = 0.64

(d) EDPF, R =0.59, P = 0.50, F = 0.54

(e) SREdge, R =0.83, P = 0.26, F = 0.40

(f) ED, R =0.88, P = 0.21, F = 0.34

(g) CannyPF, R =0.82, P = 0.20, F = 0.32