Banknote recognition technology is an important application of machine learning and pattern recognition technology, thebanknote image recognition system as a relatively independent module, already widely used in automatic teller machines, no vend-ing machines, ticket vending machines and the like. The design based on Android development platform, the system server in-cludes receiving client to upload banknote image, calling MATLAB program recognizes the image and return recognition results tothe client and the banknote image processing, image processing includes image cropping bill, anti-color...