Image By Makuta VFX – http://makutavfx.com
A lot of young visual effects artists who are starting their career, have heard of matchmove, matchmoving or camera tracking, but they don’t know exactly what it means and why its important! First all the previous terms are almost the same. Allow me to to make up an example before defining for better understanding!
Lets say there is a shot in a movie where the director needs a giant robot walk through a street, while the actor is running away from it,
obviously they will shoot the actor who is running away from a robot which doesn’t exist, meanwhile the cameraman is moving in action following the actor.
Now the result of such scene is a sequence – which is called a “plate” – of a guy running and the camera is following him, in order to add a CG robot in that shot, the visual effects artists need to analyze and translate the movement of the real world camera to a 3D camera that will be used to render out the CG robot with the same motion!
Long story short, Matchmoving is figuring out the motion of a real camera and translating it to a 3D camera that can be used later for rendering CG elements which eventually will be matched to the real plate!