IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM USING AN ELIMINATION COLOR TO DETERMINE COLOR PROCESSING FOR A DOCUMENT IMAGE

An image processing apparatus includes an image information acquisition unit, an elimination color setting unit, and a processing unit. The image information acquisition unit acquires image information of a document image in which multiple colors that are different from a predetermined document color are added to an image which is rendered in the predetermined document color. The elimination color setting unit sets a color which is defined as an elimination color from among the multiple colors. The processing unit performs predetermined processing for a color among the multiple colors that is different from the elimination color set by the elimination color setting unit.