Patent ID: 7764403
Filing Date: 2010-07-27
Classification: H04N

Abstract:
1. A method for providing a watermark in an image, thereby transforming the image into a watermarked image, the method comprising: augmenting an available customary subtractive primary colorant set with at least one additional extended set colorant, thereby providing an augmented colorant set; receiving color designation information regarding an element of the image; determining, by an iso-color locus determiner, an iso-color locus of colorant recipes for rendering a color described in the color designation information wherein at least one of the colorant recipes in the locus of colorant recipes calls for a non-zero amount of at least one of the at least one additional colorant; selecting at least two of the determined iso-color colorant recipes, wherein at least one of the selected determined iso-color colorant recipes specifies a non-zero amount of at least one of the at least one additional colorant; associating the at least two selected recipes with at least two respective encoded information states, thereby establishing an address for each selected recipe; receiving state information to be encoded in a printed version of the element of the image; and preparing to print a representation of the color described in the color designation information of the element of the image according to the colorant recipe addressed by the received state information, wherein the color designation information of the element of the image is transformed into an element of the watermarked image printable by an associated printer using the augmented colorant set as the printed version of the element of the image.