I took an image processing class during my Comp Eng undergrad. We learned about and implemented (in C, or maybe Java; I think it was C) some of the bitmap proce

I took an image processing class during my Comp Eng undergrad. We learned about and implemented (in C, or maybe Java; I think it was C) some of the bitmap processing algorithms that Photoshop incorporated. Some of that math is no joke, and making it tight in the late 80s must have been harder still.