For research purpose, my advisor told me to learn some basic image processing methode with Matlab, an engineering software which is well known and widely used for research in different engineering field. Actually, MathWorks Inc. also provided some non Windows version for Matlab product, one of them is 2007a series. You can download this series here :
NB : for this section, you also need a premium rapidshare account. Don’t ask me to give you mine. Choose free download and you need to wait a bit longer than it should be.