Practical antialiasing (part I)

CS 348B - Computer Graphics: Image Synthesis Techniques
Spring Quarter, 1997
Marc Levoy
Lecture notes for Tuesday, April 15
Handout #13

Table of contents:

• What's the best way to prevent aliasing?
  • Raising the sampling rate versus filtering
  • Sidebar: vernier acuity
  • Problem: fixed resolution displays
• Supersampling followed by resampling
  • Overview
  • Computing a single output pixel
  • Supersampling versus filtering
  • Examples of supersampling and averaging down (H.O. #11)
• Practical supersampling
  • Algorithm 1: regular supersampling
  • Stochastic sampling and human vision
  • An analysis of stochastic sampling
  • Analysis continues on handout #12
  • Human vision, reconsidered
  • Algorithm 2: practical stochastic supersampling
  • Image demonstrating supersampling patterns and explanation

Press here for Part II of this lecture.