INSERTION OF MESSAGES IN DIGITAL DATA

摘要

PROBLEM TO BE SOLVED: To provide a method and device that inserts a message to a subset of digital data while making it possible to comply with the compromise between the invisibility of the inserted message and the robustness of the insertion. SOLUTION: The method of inserting a message in a subset of digital data representing physical quantities includes the steps of estimating (E4) a capacity to receive a message for the subset, selecting (E5) a message with a size less than or equal to the estimated capacity in a set of a message, and inserting (E6) the selected message in the subset of digital data. The method applies particularly to an object in a digital image.