An image processing apparatus includes an estimating unit and a hiding unit. The estimating unit extracts a subject specifying mark image corresponding to a specifying mark from a recording area image corresponding to a recording area in which an image is recorded, plural predetermined types of specifying marks having predetermined attributes different from an attribute of the image of the recording area and being used for specifying a region within the recording area by using different specifying methods, at least one of the plural predetermined types of specifying marks being recorded in the recording area. The estimating unit estimates the type of specifying mark corresponding to the extracted subject specifying mark image. The hiding unit hides the region specified by the type of specifying mark estimated by the estimating unit by using a hiding method which is uniquely determined for the estimated type of specifying mark.