Fig. 2

Two examples and their Log-Gabor filter banks. a–e Forms of filter bank. Their center frequencies are \(\omega _{01}=\frac {1}{3}, \omega _{02}=\frac {1}{3^{2.1}}, \omega _{03}=\frac {1}{3^{2.1 \times 2.1}}, \omega _{04}=\frac {1}{3^{2.1 \times 2.1 \times 2.1}}\), and \(\omega _{05}=\frac {1}{3^{2.1 \times 2.1 \times 2.1 \times 2.1}}\) respectively. f–k The original image monarch and the different components of the corresponding five bands. l–q The original image sailing2 and the different components of the corresponding five bands