(a) image

(b) Ground Truth

(c) RNFA, R =0.66, P = 0.50, F = 0.57

(d) EDPF, R =0.72, P = 0.28, F = 0.40

(e) SREdge, R =0.86, P = 0.23, F = 0.37

(f) ED, R =0.87, P = 0.19, F = 0.31

(g) CannyPF, R =0.87, P = 0.19, F = 0.31