Patent ID: 8134557

Claim:
An image processing apparatus, comprising: a production section configured to determine a predetermined number of polygons juxtaposed in a first direction as an object block, in an order in which the polygons are juxtaposed in a second direction perpendicular to the first direction, and produce apex data of the polygons composing the object block in a unit of an object block; a conversion section configured to convert the produced apex data into first pixel data; a temporary storage section configured to store second pixel data temporarily in a unit of a data block composed of a plurality of pixel data; and a comparison section configured to compare the first pixel data resulting from the conversion by the conversion section with the second pixel data stored in the temporary storage section, wherein the number of polygons which compose the object block and are juxtaposed in a first direction is determined so that the second pixel data, corresponding to the polygons which are positioned in a boundary position of an immediately preceding object block to the object block, is stored into the temporary storage section.