3D tracking, often referred to as match-moving, is the process of determining the movement and position of a camera in a real-world scene and recreating this movement within a 3D environment. This technique enables you to composite 3D objects, animations, or special effects into live-action footage, making them appear as though they exist in the same physical space.
Blender’s 3D Tracking Features
Blender offers a robust set of 3D tracking features, thanks to the integration of the “Motion Tracking” workspace. Here are some key features:
- Camera Tracking: Blender can analyze video footage to track the movement of the camera. This information is used to create a virtual camera that matches the real-world camera’s motion.
- Object Tracking: In addition to camera tracking, Blender allows you to track specific objects within a scene. This is useful for placing 3D objects or effects onto real-world elements.
- Solving Camera Motion: Blender uses algorithms to solve camera motion, allowing you to recreate the camera’s position and orientation in a 3D environment accurately.
- Masking and Rotoscoping: Blender’s masking and rotoscoping tools help you isolate objects or areas within your footage, making it easier to composite 3D elements seamlessly.
- Green Screen and Chroma Keying: Blender includes keying tools for removing green screens or other colored backgrounds, making it easier to integrate 3D elements into live-action footage.