Apply a mean filter on a matrix

How can i apply a mean or laplacian or average or any kind of filters 3x3

on any matrix i give it to it and get the new matrix ?

What is the code for it

[Rik]

A simple Google search should get you most of the way there. What did you try?

Answer 1

[Image Analyst]

How about imfilter()

filterWindow = ones(3) / 9;
filteredImage = imfilter(m, filterWindow);

Or for the Laplacian, how about conv2():

filterWindow = -1 * ones(3);
filterWindow = 8;
filteredImage = conv2(m, filterWindow, 'same');

[Hassan Bosha]

is there a one for median filter ?

[Image Analyst]

You can use medfilt2().