(a) image

(b) Ground Truth

(c) RNFA, R =0.67, P = 0.35, F = 0.46

(d) EDPF, R =0.82, P = 0.11, F = 0.19

(e) SREdge, R =0.87, P = 0.09, F = 0.16

(f) ED, R =0.89, P = 0.07, F = 0.13

(g) CannyPF, R =0.88, P = 0.05, F = 0.10