In ML-KA, a machine learning group in Karlsruhe, we recently had a discussion about features learned by CNNs. It is often said that they learn general features in the first layers which are usable for arbitrary vision tasks. One idea to check that was to apply them to paint-like paintings. By "Paint-like" I mean a specific style of image which is often created by children / non-professionals. Here is an example:
Is there a big repository of paint-like images available? (Preferably with labels / descriptions / tags / categories.)