Hello fellow investigators
I have two questions about optical illusions
1) A photo mosaic is something like this http://i.stack.imgur.com/Pzplp.png
What are the optical principles behind our eye merging the many tiny images into a large coherent one?
2)Are there etiological explanations of optical illusions in general - by this I mean can it be explained why image inputs get parsed in 'wrong' ways by the eye/brain, why does the parser get confused (I suspect it is because the eye has parsing parameters like we cannot see UV light - is there a list of those somewhere?)
Thanks for your time