The following data, provided by Prof. Yang WANG from HKUST, https://drive.google.com/folderview?id=0B-yDtwSjhaSCZ2FqN3AxQ3NJNTA&usp=sharing contains a 28 digital paintings of Raphael or forgeries. Note that there are both jpeg and tiff files, so be careful with the bit depth in digitization. The following file https://docs.google.com/document/d/1tMaaSIrYwNFZZ2cEJdx1DfFscIfERd5Dp2U7K1ekjTI/ edit contains the labels of such paintings.
Python
In this project, I applied the mehtod proposed in http://dx.doi.org/10.1016/j.acha.2015.11.005 to predict the identity of 6 disputed paintings (maybe Raphael's) and reach a accuary of about 96.5% on leave-one-out cross validation, using tight frame feature extraction and combining Distance Discriminant Analysis and Neural Network.
The functions or usage of the py files can be found in 'usage.txt'