Patent ID: 8514240

Claim:
A non-transitory computer-readable medium storing a computer program for authenticating an individual by using a biometric feature of a living body, the computer program causing a computer to perform a procedure comprising: generating, from an photographed image of the living body, photographed image data including a monochromatic palette formed by arranging indexed colors to which monochromatic colors are assigned in order of density; generating display data by replacing the monochromatic palette included in the photographed image data with a color palette in which one of arrangements formed by dividing the arrangement of the indexed colors by a predetermined background boundary threshold value is set as a background display arrangement of indexed colors to which a background color is assigned, and the other of the arrangements is set as a living body display arrangement of indexed colors to which a specific color is assigned in order of density; and displaying the living body using the display data, wherein the order of density of the indexed colors arranged in the monochromatic palette, and the order of density of the indexed colors arranged in the living body display arrangement are opposite in direction to each other; and wherein a range of density of the indexed colors arranged in the living body display arrangement is smaller than a range of density of the indexed colors arranged in the monochromatic palette.