In order to have any hope of accurately reconstructing
a function from a periodically sampled version of it, two conditions must be satisfied:
Satisfying these conditions will eliminate aliasing.
- The function must be bandlimited.
- The sampling frequency, fs, must be at least twice the maximum
frequency, fmax, of the function.
- "Jaggies" are aliasing
- Both of the techniques discussed are used
- Super-sampling (more samples than pixels)
- Low-pass prefiltering (averaging of super-samples)