mr mohamed zarka,

take a look on that link may be it could help you:

http://vision.stanford.edu/projects/objectbank/

AlchemyAPI may also be helpful, depending on the specifics of your problem

Many thanks for the answers.

I found also a python code at :

http://www.irisa.fr/prive/Sebastien.Campion/mml/pics_bow.html

http://www.irisa.fr/prive/Sebastien.Campion/mml/pics_bow.html

I would suggest scikit-learn for python. It is fairly comprehensive and  very easy to use.  It is built using Numpy and Scipy, so is it also relatively fast.

http://scikit-learn.org/stable/

Thanks dear Jack McKay Fletcher,

the code in http://www.irisa.fr/prive/Sebastien.Campion/mml/pics_bow.html uses indeed scikit-learn for python.