Sampling and reconstruction

CS 348B - Computer Graphics: Image Synthesis Techniques
Spring Quarter, 1998
Marc Levoy
Handout #6

Table of contents:

• Definition of Fourier transform
• Definition of convolution
• Ideal sampling
• Ideal reconstruction
• Undersampling
• Solution #1: raise the sampling rate
• Solution #2: bandlimit the signal
• Poor bandlimiting
• Poor reconstruction
• Summary