Patent ID: 8537410
Filing Date: 2013-09-17
Classification: G03G,G06T,H04N

Abstract:
1. A non-transitory computer-readable storage medium for recording a tint block image generation program that causes a computer to execute a tint block image generation step of generating tint block image data including a latent image portion and a background portion which have different output densities to be reproduced by copying, the tint block image generation step comprising: a camouflage pattern registration step of accepting an input of multi-grayscale camouflage pattern data for representing a camouflage pattern that has more than two grayscale values and storing in a memory the multi-grayscale camouflage pattern data, which has been input; a correcting step of correcting grayscale values of the multi-grayscale camouflage pattern data based on input grayscale values of the latent image portion and background portion so as to generate corrected camouflage pattern data; and a tint block image data generation step of generating a latent image portion image data for the latent image portion based on a latent image portion screen for an area corresponding to the latent image portion within the camouflage pattern represented by the corrected camouflage pattern data, and generating a background portion image data for the background portion based on a background portion screen for an area corresponding to the background portion within the camouflage pattern represented by the corrected camouflage pattern data, from grayscale values of the corrected camouflage pattern data.