fspecial filter of my own making

I would like to make a point spread function using fspecial for atmospheric turbulence. Is there a way that I can create my own function instead of using the pre-defined functions for 'gaussian' etc.? If yes, how would I go about doing that?

Answer 1

[Image Analyst]

Sure. Just assign it.

psf = [1,2,3;
    4,5,6;
    7,8,9]; % or whatever it is.

Do you know the size of it (the window width)? Do you have a formula for it? You need to or else how will you put the values into it. Then you can use conv2() to convolve your input image with your custom PSF.

blurredImage = conv2(inputImage, psf, 'same');