A method for processing an augmented reality (AR) image includes: obtaining an AR workspace image of an AR workspace that includes a document in a first region of the AR workspace and an AR output projection in a second region of the AR workspace; obtaining an internal representation of the AR output projection; masking the AR workspace image of the AR workspace with the internal representation to eliminate the AR output projection in the AR workspace image; and generating, in response to masking the AR workspace image of the AR workspace, a clean version of the AR workspace image in which the AR output projection is eliminated.