1. An image processing apparatus for correcting data of each pixel in an edge area, comprising: a first judgment unit for judging whether a target pixel is in a first edge area; a second judgment unit for judging whether the target pixel is in a second edge area having a lower intensity variation level than the first edge area; a first correction unit for conducting first correction processing on data of each pixel that is judged by the first judgment unit to be in the first edge area; and a second correction unit for conducting second correction processing on data of each pixel that is judged by the second judgment unit to be in the second edge area.