Ur articles are really amazing, terry.. When I was writing about filters, I immediately recall about ur post and im glad to mention it here... I will continue this series of image processing hopefully... U can use OpenCV for ur C# or python codes..
U r absolutely right.. The idea of processing images to a desired level is really old concept.. As u said, back in the days of 'films' people used to modify images manually and thanks to the advancement of technology, we can do this with righting a few blocks of codes today...!
Thanks for ur compliments.. :)