The invention concerns a method of inserting a message in an image, characterized in that it comprises the steps of: selecting a set of points in the image as a function of predetermined criteria, so as to form a coordinate system in the image, calculating (S21) an affine transformation...http://www.google.ca/patents/US7330560?utm_source=gb-gplus-sharePatent US7330560 - Insertion and extraction of a message in an image
