Thank you gidesa,
Working very well, seems very promising fast detection, from 1 to 10 score, our lovely pascal wrapper got how many score compared to python and c++ from your point of view?
Thank you. Indeed note that the wrapper is just .... a wrapper on calculations done inside Opencv library, written in C++. So C++ remains faster, because interfacing from main program is more straighforward. And because heavy optimization work was done on some of its compilers (but not all C++ compilers are better than Pascal ones).
And, for heavy processing with millions of detection cycles (realtime detection from a camera, or processing thousands of images), Pascal remains much better than Python.
I have done a little robot that just use this wrapper for continuous autonomous obstacle detection and object recognition.