ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,482,289, issued on Nov. 25, was assigned to PAYPAL INC. (San Jose, Calif.).
"Detection of physical tampering on documents" was invented by Jiazheng Zhang (Singapore), Yuzhen Zhuo (Singapore) and Jiyi Zhang (Singapore).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems are presented for detecting physical tampering on a document based on analyzing an image of the document. When the image of the document is obtained, multiple contours are identified in the image based on pixel characteristics of the image. Dimension attributes of the contours are determined. Contours that are determined to correspond to borders or texts of the documents bas...