Patent ID: 8422071

Claim:
An information conversion method for adding textures to areas of an image where the areas have colors lying on a color confusion line, the method comprising: deciding a first auxiliary line passing through a first position on the color confusion line and intersecting perpendicularly with the color confusion line and a second auxiliary line passing through a second position which is different from the first position on the color confusion line and intersecting perpendicularly with the color confusion line, with respect to the areas of the image having the colors lying on the color confusion line, wherein one of the first auxiliary line and the second auxiliary line is decided into a maximum and the other of the first auxiliary line and the second auxiliary line is decided into a minimum; generating textures with different conditions according to a relative position on the color confusion line between the first auxiliary line and the second auxiliary line; approximating an average color in each of the areas in which the textures are added to corresponding original colors; and adding the textures such that the average colors are approximated to the corresponding original colors of the image.