Patent ID: 8488181
Filing Date: 2013-07-16
Classification: G06K

Abstract:
1. A computer implemented method for preserving markings made to a hardcopy of an original document, the method comprising: receiving an image of an original document; extracting one or more embedded objects within the original document to create a first list of objects embedded in the original document, the embedded objects being separable content that includes at least one of text, graphics, pictures, plots, user markings, and line art; receiving, using a scanning device, an image of a hardcopy print of the original document, the hardcopy print containing a user marking; extracting one or more embedded objects in the image of the hardcopy print to create a second list of objects embedded in the image of the hardcopy print, the embedded objects being separable content that includes at least one of text, graphics, pictures, plots, user markings, and line art; comparing the first list to the second list in order to identify differences between the original image and the image of the hardcopy print; extracting the identified differences from the image of the hardcopy print to produce a difference image; analyzing the difference image to identify a print defect; removing the print defect from the difference image to retrieve the user marking; and generating an object identification record comprising a plurality of data fields containing information about the user marking and information which enables the identified differences to be associated with a particular location within a given page of the original document.