Systems and methods for encoding information in documents

Abstract

Systems and methods for operating a system. The methods comprise: obtaining a message in a human readable format; converting the human readable format of the message into a colored dot pattern format; and encoding the message in a printed document or an electronic document by applying colored dots to the printed or electronic document in accordance with the colored dot pattern format and in a manner that minimizes visibility of the colored dots. The converting involves: mapping each character in the message to a mapping character, performing optical character recognition to recognize characters in the electronic document that are the same as the mapping characters in the character mapped message, tagging the recognized characters in the electronic document, detecting an edge of each tagged character, segmenting the detected edge into edge sections, assigning each edge section to a category, and obtaining dot colors and positions for characters of each word.

Dependencies are inferred from the claim text.