Patent ID: 8035861
Filing Date: 2011-10-11
Classification: G06K,H04N

Abstract:
1. A method for obtaining parameters, comprising the steps of: irradiating with invisible light to which an invisible ink reacts a sample print obtained by printing on a physical medium invisible information to be extracted by a device having an image-pickup function, together with visible information, including at least four patterns capable of being distinctly extracted as different patterns, of (1) the physical medium itself, (2) at least one color of visible ink printed on the physical medium, (3) at least one color of the invisible ink printed on the physical medium, and (4) the invisible ink overprinted on the visible ink printed on the physical medium; picking up an image of the sample print in an irradiated state; obtaining (1) color data on a physical medium itself, (2) color data on at least one color of visible ink printed on the physical medium; (3) color data on at least one color of invisible ink printed on the physical medium; and (4) color data on the invisible ink overprinted on the visible ink printed on the physical medium; computing accuracy in invisible information extraction by using the color data on the physical medium itself, color data on the at least one color of visible ink printed on the physical medium, color data on the at least one color of invisible ink printed on the physical medium, and color data on the invisible ink overprinted on the visible ink printed on the physical medium, the visible information layout data and the invisible information layout data; and generating data for displaying information from the invisible information layout data when the accuracy satisfies a predetermined condition.