3D Motion Tracking

What is 3D Tracking and what can it do?

What 3D tracking can do:

  • track 2D positions – the X and Y axis
  • solve the 3D position – the additional Z axis
  • reverse engineer camera movement, camera angle and lens angle
  • attach data to another layer or object

What 3D tracking cannot do:

  • track pixels if they are obscured by another object
  • track pixels if they are obscured by motion blur

Below is a quote to help understand the meaning of 3D motion tracking:

“Match moving is a technique that allows computer graphics to be inserted into live-action footage with correct posiston, scale, orientation, and motion. Also known as motion tracking, it’s what allows movie monsters to run down Main Street and robots to run through crowds- and look real.”

Dobbert, T. 2012

 

We experimented with 3D tracking using a box again. This time I placed text on the Z axis and added a shadow. When the camera moves around the object, the object doesn’t change.

Original video:

Edited 3D tracking video:

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