Part a and b, type out in Matlab Code.

(Figure 4.11)

[5] (a) Implement the Gaussian lowpass filter in Eq. (4.3-8), using a radius Do 25, and apply the algorithm to Fig4.11(a). (b) Highpass the input image used in (a), using a highpass Gaussian filter of radius Do 25 (see eq. (4.4-4))