(a) image

(b) Ground Truth

(c) RNFA, R =0.74, P = 0.37, F = 0.50

(d) EDPF, R =0.72, P = 0.31, F = 0.43

(e) SREdge, R =0.79, P = 0.19, F = 0.31

(f) ED, R =0.83, P = 0.17, F = 0.28

(g) CannyPF, R =0.89, P = 0.15, F = 0.26