US 12,456,316 B2
Methods and systems for document authentication using ink satellites
Varun Sambhy, Pittsford, NY (US); Eliud Robles Flores, Rochester, NY (US); and Guo-Yau Lin, The Woodlands, TX (US)
Assigned to Xerox Corporation, Norwalk, CT (US)
Filed by Xerox Corporation, Norwalk, CT (US)
Filed on Aug. 7, 2023, as Appl. No. 18/366,615.
Prior Publication US 2025/0054323 A1, Feb. 13, 2025
Int. Cl. G06V 20/80 (2022.01); G06V 20/00 (2022.01)
CPC G06V 20/80 (2022.01) [G06V 20/95 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A method for verifying authenticity of a printed document, the method comprising, by a processor:
receiving an identification of a portion of the printed document, the portion including a document signature;
receiving, from a data store, a document signature corresponding to the printed document, the document signature comprising images of one or more first satellite droplet patterns (SDPs) each of the one or more first SDPs comprising a plurality of ink satellite droplets that were randomly formed during printing of a print image on the printed document;
receiving an image of the portion of the printed document;
analyzing the image to identify one or more second SDPs in the printed document; and
authenticating the printed document by determining whether at least a subset of the one or more first SDPs match a corresponding subset of the one or more second SDPs.