Swazzy said:
What would be the easiest way to implement this algorithm to an enitre film/shot, say through avisynth?
Use Virtualdub to export the frames (or a selection of frames) to image files. Correct them using the GUI. Import the frames in Avisynth again (the names of the corrected files are the same, except in another directory, so this is easy). Add sound, and you're done.