Forensic verification utilizing halftone boundaries

摘要

A forensic verification system (700) extracts a print signature via print signature extractor 710 from the boundary of a halftone contained in an image. The system (700) compares the print signature to a reference signature stored in a registry via comparator 720 to determine differences between the print signature and the reference signature. The system 700 performs a forensic-level statistical image analysis via forensic analyzer 730 on the print signature and the reference signature based on the comparison to authenticate the printed media.

主权项

1. A non-transitory computer readable medium comprising computer executable instructions that when executed cause a processor to:
extract a boundary of a halftone of an image of printed media, wherein at least a portion of the boundary defines a print signature; and authenticate the printed media based on a forensic-level statistical image analysis, wherein the forensic-level statistical analysis comprises:
accessing a reference signature stored in a registry, wherein the reference signature comprises payload information encoded into a boundary of a reference halftone;comparing the print signature to the reference signature to determine differences between the payload information of the reference signature and the print signature; andverifying whether the printed media is authentic based on the comparison.