(a) image

(b) Ground Truth

(c) RNFA, R =0.67, P = 0.26, F = 0.37

(d) EDPF, R =0.71, P = 0.12, F = 0.21

(e) SREdge, R =0.90, P = 0.07, F = 0.14

(f) ED, R =0.89, P = 0.06, F = 0.11

(g) CannyPF, R =0.89, P = 0.06, F = 0.11