Patent Document ID: 20080259366
Application ID: 11948682
Patent Status: 0

Claim One:
1. An image forming apparatus comprising: an area setting unit configured to set a reference area around a pixel of interest in an image to be processed; a determination unit configured to determine whether a pixel not to be referred exists in the reference area; a transformation unit configured to, if the pixel not to be referred exists, transform the shape of the reference area based on the pixel; a decision unit configured to decide a trapping color for the pixel of interest based on, a first peripheral pixel having a color component that is not included in the pixel of interest among peripheral pixels around the pixel of interest included in the reference area with the transformed shape; a density calculation unit configured to calculate a density of the trapping color based on the peripheral pixels; a correction unit configured to correct a pixel value of the pixel of interest using the trapping color having the calculated density in the image to be processed; and an image forming unit configured to form an image having pixels corrected by said correction unit.