METHOD FOR FORMING HOLOGRAM IMAGE HAVING ARBITRARY GRATING PATTERN ON THREE-DIMENSIONAL COMPUTER GRAPHICS, METHOD FOR SIMULATING THE HOLOGRAM HAVING ARBITRARY GRATING PATTERN, HOLOGRAM, AND AUTHENTICATION METHOD AND AUTHENTICATION DEVICE OF THE HOLOGRAM

摘要

PROBLEM TO BE SOLVED: To solve conventional problems in conventional three-dimensional computer graphics (3DCG) wherein input operation is complicated and adjustment is difficult, and there are limitations on resolution of a grating pattern, an amount of reading, fixation of size, and images simultaneously usable by performing processing using texture mapping function on 3DCG. SOLUTION: The method comprises a pattern acquisition step for mapping at least one grating pattern or a grating pattern having an authentication image formed thereon on 3DCG; an adjustment step for adjusting the layout of the pattern; an RGB value extraction step for extracting the period, direction and luminance value (RGB value) of the grating pattern after mapping; a computing step for determining a wavelength of diffracted light; an RGB color component conversion step for converting the wavelength to RGB color components; a display step for displaying the pattern on a display; and a rendering step for expressing the displayed pattern as a diffracted light of an optimum grating. COPYRIGHT: (C)2008,JPO&INPIT