1. An image processing apparatus that outputs color information to an image forming apparatus that forms a toner image on a sheet using color toner and transparent toner, the color information representing a toner image to be formed on the sheet by the image forming apparatus, comprising: an extracting unit that extracts a characteristic region of a predetermined color and shape, a non-characteristic region that is other than the characteristic region, and a border region that forms a border between the characteristic region and the non-characteristic region, from input image data; a first calculating unit that creates, based on the image data, first color information on a toner image corresponding to the color toner; a second calculating unit that calculates second color information representing a first amount of transparent toner to be applied to the extracted characteristic region, a second amount of transparent toner smaller than the first amount to be applied to the extracted border region, and a third amount of transparent toner smaller than the second amount to be applied to the extracted non-characteristic region.