I think you can consider one single image as a large corpus of data, in the same was that you could train a simple Markov model from a large paragraph of text.

I think you can consider one single image as a large corpus of data, in the same was that you could train a simple Markov model from a large paragraph of text. It doesn't matter to the model whether the original text was 500 words in one piece of text, or five 100-word texts. It's mostly looking at local regions and seeing what guesses it can make about the next region given one region. (If I understand correctly).