An image forming apparatus comprises an identifying section configured to analyze image information and identify object information and detect the size of the object information and a concentration difference between the object information and the background information, an image processing section configured to perform image processing based on at least one of the size of the object information and a concentration difference relative to the background information, and a printer section configured to form an image based on image information on which the image processing is performed. By doing so, it is possible to effect proper image correction while giving consideration to a color "area" effect.