1. A method for compensating for offset signals produced by a flat panel detector in a radiographic device, the method comprising: generating one or more offset map for said radiographic device during a non-imaging state; generating a pre-exposure x-ray with said radiographic device; determining exposure parameters from said pre-exposure x-ray generated by said radiographic device; selecting an offset map from said one or more offset map from the determined exposure parameters; and applying said selected offset map to subsequent x-ray images from said radiographic device.