I want to build flash application that can detect the user eyes color and hair color etc' Does anyone know about free library that I can use for this kind of project?
Thanks,
This kind of visual processing is generally too intense to handle within the single thread and VM that AS3 provides, it's a task better suited to a language that compiles to machine code and has threading capabilities such as C or C++.
Here's something related to the topic, I believe you would be better off just trying to use OpenCV, but it should also contain the appropriate algorithms to port if you have the time and mental capacity to do so: http://www.quasimondo.com/archives/000687.php
Alternatively to avoid all the leg-work you may want to consider using a server side solution like http://face.com/