(a) image

(b) Ground Truth

(c) RNFA, R =0.33, P = 0.11, F = 0.16

(d) EDPF, R =0.51, P = 0.07, F = 0.12

(e) SREdge, R =0.70, P = 0.06, F = 0.12

(f) ED, R =0.74, P = 0.05, F = 0.10

(g) CannyPF, R =0.68, P = 0.05, F = 0.10