When creating a stop motion movie we need take a lot of pictures to build the movie.
But after we took the pictures, we have a problem: the brightness and contrast varies between pictures.
What kind of tool can we use to normalize these levels? For example, if we decide that a picture of a defined scene is a good one, how we can automatically, for all pictures taken, normalize the brightness (and contrast) to be compatible with this predefined good picture?
A solution using a free or open source tool would be better for us. Or a script than we can run on a folder, for example. The stop-motion aims to encourage the people ride bicycles.
But if there is a paid solution, we would like to know too.
Thanks in advance.
Some frames and example video could be found in this link.