HW 4, EECS 203A

HW4, Problem 4.5

Nasser Abbasi

A high pass Gaussian fillter can be consider the difference between 2 Gaussian filters with different $\sigma $ different amplitude, as shown in this example


Figure

$\ $

But MATH

So, let MATH and MATH

Hence MATH

so

MATH

But from problem 4.4 result, MATH

Hence MATH

Where $A\geq B$ and MATH