For school we came up with a cool concept, the video starts in black and white and when a person in the video touches an object it turns to colour.
Could you guys help us out here? Do you have any tutorials for us? Which programs do we have to use (the price of the software is not a problem).
I now understand that rotoscoping can be used for this. But how bout a gradual change from black and white to colour if a building has been touched for example? For it to change in one frame will look kinda terrible...