1. A method of orienting an object in an image represented by a digital signal representation into a desired orientation comprising the steps of: deriving orientation of said object relative to a reference entity, and subjecting the digital signal representation of said object to an orientation modifying geometric transformation to yield said desired orientation, wherein said desired orientation is obtained by calculating mathematical moments of the digital signal representation relative to different reference entities, and obtaining a decision on the orientation of the radiographic image on the basis of an extreme value (maximum, minimum) of the calculated moment(s).