There's no way to directly run your code, as Matlab doesn't run on the Pi. The Matlab language is a bit similar to Python, so you could consider (a) understanding the code you've got and (b) translating it. You may find that it's using some special image filters from one of Matlab's toolboxes (the convenient libraries are often a reason for using Matlab).
I've also heard there's an open source package called Octave that can run some Matlab stuff. It might be possible to build that on the Pi.
Octave supports very well all the math stuff and plotting, but does not fully supports all "toolbox" packages, and few third party Mathlab packages work on it.
I guess this implementations uses Matlab image processing toolbox that's not as complete on Octave as it's on Mathlab.
