image processing in c++

Quote:

i'm trying to write an iris recognition program using c++, and i have no experiance in image processing.

This looks to me like an oxymoron.
So I encourage you to learn a little image processing first before you attempt this.

Please accept a fact is that C++ is a programming language. Just like any natural language like English. Libraries, toolkits, frameworks can provide ready made or programmable solutions for the problem which are made using the programming languages like C++.

Image processing is a vast subjects and people make solutions themselves to an extend. Just to open an image, you can use Windows APIs or classes to load the image file. But if you really wanted to do some image processing (Ain't sure to what extend you're doing 'image processing'), it's better to rely on some libraries like OpenCV[^], CImg[^] etc.

You should follow the advice by _Superman_ and start learning the basics of image processing first before starting to program an iris localiser.

In my opinion you should definitely use a library for that. In the world of C++ there are several candidates for that, the most common nowadays beeing openCV[^] and another more complex one ITK[^].

For starters i would recommend to do some of the openCV tutorials offered on the above linked site.

Although I don't like to discourage you, in this case I have to say that your chances of succeeding are not very high. What you are asking is is equivalent to saying: "I am new to painting and I want to paint a picture like Mona Lisa. What should I do? Should I use a paint brush and colors?"

You are trying to do one of the most complex things in image processing and you will not get very far without a sound knowledge of the subject and of C++ of course.

My advice: Find a simpler project and try to gain some knowledge about image processing step-by-step.