Image processing apparatus and image processing method

An image processing method, comprising:

• determining, using a processor, 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;
• producing, using the processor, apex data of the polygons composing the object block in a unit of an object block;
• converting, in a conversion section, the produced apex data into first pixel data;
• storing, in a temporarily storing section, second pixel data temporarily in a unit of a data block composed of a plurality of pixel data;
• and
• comparing, in a comparing section, the first pixel data resulting from the conversion with the stored second pixel data,
• 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 temporarily stored.

A non-transitory computer-readable storage medium including computer executable instructions, wherein the instructions, when executed by a computer, cause the computer to perform a method for image processing, the method comprising:

• determining 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;
• producing apex data of the polygons composing the object block in a unit of an object block;
• converting the produced apex data into first pixel data;
• storing second pixel data temporarily in a unit of a data block composed of a plurality of pixel data;
• and
• comparing the first pixel data resulting from the conversion with the stored second pixel data,
• 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 temporarily stored.