What type of filter are you exactly looking for?

Do you have any specification?

Check these links out

https://www.mathworks.com/matlabcentral/fileexchange/37796-spatial-filtering-of-image

https://stackoverflow.com/questions/10672184/implementing-imfilter-in-matlab

https://in.mathworks.com/help/images/linear-filtering.html

you can check in the above link

Rabia Almamlook

With the following code, you may filer the image

I1 = imread('XXX.jpg') % add your image

g = fspecial('log',7,0.4) % creates a 7 /7 Log filer with std of 0.4

I2 = imfilter(i1,h); % applies filter to the raw image using imfilter

imshow(I2) % Displays your image

Please let me if this works

What type of filter are you exactly looking for?

Do you have any specification?

Check these links out

https://www.mathworks.com/matlabcentral/fileexchange/37796-spatial-filtering-of-image

https://stackoverflow.com/questions/10672184/implementing-imfilter-in-matlab