Run-time video editing

Question

Hello!

First, thank you for reading my question. I am facing a problem and i need your help. I need to figure out how to do the next:

1- take the image coming from the webcam (input).
2- Split it to 2 partes (equally).
3- take a copy of one parte (it doesn't matter wiche parte).
4- flip the copied part.
5- place it on the other side
6- Redo from number one ( 1 ) (real-time)

the following image explain more:

http://i.stack.imgur.com/HUGVC.jpg