Many many years ago, a fellow demoscener pointed me to this: Yehar's DSP Tutorial for the Braindead http://yehar.com/blog/?p=121 http://yehar.com/blog/?p=121

Many many years ago, a fellow demoscener pointed me to this: Yehar's DSP Tutorial for the Braindead http://yehar.com/blog/?p=121 http://yehar.com/blog/?p=121 It skips over some of the more fundamental math, but it serves as a great introduction to general ideas of digital signal processing. You can then proceed to look up the fiddly bits and deeper theory in more detail as you see fit (start from Wikipedia, hit the external links--that's how I'd do it). This particular tutorial speaks mainly about digital audio signal processing, which is the 1D case, but it generalizes to 2D image processing just as easily, if you've got the imagination (although you need some tricks if you don't want an IIR filter to look weird on an image).