1. A computer implemented method for determining if a document is an original version using a processor comprising: receiving at the processor a captured copy detection pattern (CDP) from a document to be verified; obtaining an expected CDP using the processor; manipulating the expected CDP to create a manipulated expected CDP using the processor; wherein manipulating the expected CDP includes registering the expected CDP to the captured CDP; and wherein registering the expected CDP to the captured CDP comprises spatially transforming the expected CDP; and performing a first correlation using the captured CDP and the manipulated expected CDP to determine a first test parameter using the processor.