Patent ID: 8310732

Claim:
An image processing device comprising: a displaying unit that reads an image that was scanned from an original and forms the image of the original on the displaying unit; a base color region designator that interacts with a user to select a base color region of the image displayed on the displaying unit; a non-base color region designator that interacts with a user to select a non-base color region of the image displayed on the displaying unit; and a base eliminator that executes a base elimination of the image based on the base color region selected by the base color region designator and the non-base color region selected by the non-base color region designator, wherein the base eliminator comprises a non-base judging equation deriving unit that uses a judging equation to judge whether or not a predetermined pixel is a non-base pixel, the non-base judging equation deriving unit derives the judging equation based on color information of all of the pixels not outside the non-base color region.