The image forming apparatus 2, wherein {HEAD ~ the modification information referring modification unit} compares {TAIL ~ the count value} with a threshold value and, if the count value is smaller than the threshold value, modifies the pixel of interest based on information in the reference area 
compares
The image forming apparatus 2 , wherein { HEAD ~ the modification information referring modification unit } compares { TAIL ~ the count value } with a threshold value and , if the count value is smaller than the threshold value , modifies the pixel of interest based on information in the reference area
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH