Every picture in this article is worth a million words. Well done! I also used a lot of pictures when teaching Discrete Cosine Transform in a grad course back

Every picture in this article is worth a million words. Well done! I also used a lot of pictures when teaching Discrete Cosine Transform in a grad course back in the day: http://rmarsh.cs.und.edu/CLASS/CS446/DiscreteCosineTransform.pdf http://rmarsh.cs.und.edu/CLASS/CS446/DiscreteCosineTransform... Students loved it and could instantly relate to the theory because of these pictures. Embarrassingly, this continues to be my most cited publication to date :)