Startup Idea : Augmented Reality and Machine Learning Gas Prices

I would like to point my phone camera at the posted prices of at a Gas Station. Then have it recognise the fuel prices, check the Location and compare these prices with those of nearby stations. The App would use Machine Learning to analyse the scene and find and understand the gas prices. No input required on the users part. Then post the information in a meaningful way using AR as you look at the gas price sign.