I'm in the early stages of building an application that uses the camera module and OpenCV to recognise gestures and generate audio effects. Kind of head/hand op

I'm in the early stages of building an application that uses the camera module and OpenCV to recognise gestures and generate audio effects. Kind of head/hand operated synthesizer. Maybe hook-up a video projector and throw-in some video effects too. Secondary objective is to renew my acquaintance with C/C++ after years of mainly using managed languages, and to learn modern language features.