Fig. 9.

Corresponding processed image results by various filter parameters in Fig. 8: (a) $\sigma =3,m=11$; (b) $\sigma =3,m=15$; (c) $\sigma =3,m=19$; (d) $\sigma =3,m=23$; (e) $\sigma =3,m=27$; (f) $\sigma =4,m=11$; (g) $\sigma =4,m=15$; (h) $\sigma =4,m=19$; (i) $\sigma =4,m=23$; (j) $\sigma =4,m=27$; (k) $\sigma =5,m=11$; (l) $\sigma =5,m=15$; (m) $\sigma =5,m=19$; (n) $\sigma =5,m=23$; (o) $\sigma =5,m=27$; (p) $\sigma =6,m=11$; (q) $\sigma =6,m=15$; (r) $\sigma =6,m=19$; (s) $\sigma =6,m=23$; (t) $\sigma =6,m=27$; (u) $\sigma =7,m=11$; (v) $\sigma =7,m=15$; (w) $\sigma =7,m=19$; (x) $\sigma =7,m=23$; (y) $\sigma =7,m=27$.