Also, the DCT is what is used for JPEG, so maybe that helps you think about this a bit more intuitively: http://en.wikipedia.org/wiki/JPEG http://en.wikipedia.

Also, the DCT is what is used for JPEG, so maybe that helps you think about this a bit more intuitively: http://en.wikipedia.org/wiki/JPEG http://en.wikipedia.org/wiki/JPEG