Computer Vision for Visual Effects
This is great series of lecture about computer vision and movie tricks by Rich Radke.
The First lecture is a sort of introduction to the world of movie magic and tricks related to computer vision technique. Look at this really good overview for your own motivation. The film industry is engaged in video post-processing for a long time. You can find here topics from segmentation to tracking of complex model and many greater practical computer vision problems.
Some of them are waiting to right time to be part of our lives in mobile devices and not only prerogative in movie industry.
I find a great inspiration in his book 2.
Computer Vision FX more about book Here