Device and method for determining color of output image in image forming apparatus

摘要

In a case where image processing, in which a ratio of the number of color pixels greatly fluctuates, is executed after performing charging determination, an output result might not match a result of the charging determination. There is provided a device for determining a color of an output image in a case where an image to be printed is printed with an additional image attached thereto, the device including: a unit configured to divide the image to be printed into blocks of a predetermined size; a unit configured to calculate an average value of color components of pixels included in the block; a correction value calculation unit configured to correct a calculated average value using a correction value corresponding to the additional image; and a color/monochrome determination processing unit configured to determine, based on the corrected average value, whether the block is a color block or a monochrome block.