Equivalent to a 50 minute university lecture on Fourier Transforms. Part 3 of 3. 0:00 - intro 0:20 - sampling a sinusoid 0:37 - aliases and frequencies 1:30 - avoiding aliasing and the Nyquist rate 3:05 - 2D image frequencies 3:32 - 2D image Fourier Transform 5:56 - low-pass filtering and anti-aliasing 6:37 - sinc filter 6:40 - resizing with a low-pass filter Graphics in 5 minutes is a series of cartoon-style videos that teach computer graphics in 10x less time. You can take the equivalent of a University level computer graphics course in just over two hours. The playlist is here: See here for more information: