To use opencv in opengl project

I have done a project in opengl(vs c++2010express). The project is moving into a room(foreword,backward,left,right) using keyboard keys & for all walls texture mapping is done with a bitmap image.I want to use hand gesture instead of keyboard keys to move the camera.please help me how can i modify the project using opencv while keeping other opengl code as it is.Thank you very very much.urgent,doing a final year project