How can I create an equation in matlab for image processing?

[Boltzman Oscillation]

TL;DR

I want to create the inverse gaussian filter equation on MatLab but I have no idea where to start, perhaps learning how to create another equation such as the 2DFFT will help.

Here is the documentation for the 2DFFT:
https://www.mathworks.com/help/matlab/ref/fft2.html
how would I go about creating this formula on MATLAB to apply it on an image? My guess is that I need to create the equation and then multiply it to the image I need such as:
$$U = VI$$
where V is my created equation and I is the image? I don't know if I am making sense at all, any help would be appreciated and any resources would also be appreciated.

 

[.Scott]

see https://blogs.mathworks.com/steve/2007/08/13/image-deblurring-introduction/
There are two possibilities:
1) Compute invert of Gaussian function (fft(g), invert (1/x) each element, inverse fft); than convolve with image.
2) fft of image, fft of Guassian (same dimensions), for each correspond element in those ffts, compute image/Guassian, inverse fft.