Digital compositing

CS 248 - Introduction to Computer Graphics
Autumn Quarter, 1999
Marc Levoy
Lecture notes for Thursday, October 21

Table of contents:

• Definition of digital compositing
• 1-bit matte
• Alpha channel matte (8 bit matte)
• Deriving alpha mattes
• The compositing approximation
• The assumption of uncorrelated mattes
• The compositing algebra
• Premultiplied alphas