Patent ID: 7706619

Claim:
An image processing device comprising: an inputting section that inputs a substantially rectangular source image configured of a plurality of pixels arranged in a first direction and in a second direction substantially perpendicular to the first direction, the plurality of pixels having respective pixel values; and a reducing section that reduces the source image for obtaining a substantially rectangular output image configured of a plurality of pixels arranged in the first direction and in the second direction, the reducing section comprising: a reduction-ratio acquiring section that acquires a reduction ratio for reducing the source image into the output image; a division-number determining section that determines a division number nDev for dividing each pixel constituting the source image into (nDev×nDev) division blocks, where nDev is an integer that is greater than or equal to two, and (nDev×nDev) is a square of the division number nDev; a process-block-number calculating section that calculates, based on the reduction ratio, a number of division blocks corresponding to a single pixel in the output image; an average-pixel-value calculating section that calculates, for the single pixel, an average pixel value based on pixel values of the division blocks, the pixel values of the division blocks being pixels values of corresponding pixels in the source image; and a repeating section that allows the process-block-number calculating section and the average-pixel-value calculating section to repeat same processes for each of the plurality of pixels in the output image, thereby obtaining an entire output image.