Viewing and Projection
Our eyes collapse 3-D world to 2-D retinal image
- (brain then has to reconstruct 3D)
This process occurs by projection
Projection has two parts:
- Viewing transformations: camera position and direction
- Perspective transformation: reduces 3-D to 2-D
Use homogeneous transformations
These transformations form the root of the transformation hierarchy
Camera may be animated by changing these transformations