| 摘要 |
<p>This object identifier (10) is provided with a data-forming unit (42) and a data-retrieving unit (46). The data-forming unit (42) forms an integral image (101-108) having an image region (100) of the same size as an original image (Im) and an image to be integrated (81-88). The data-retrieving unit (42) obtains compressed data (131-138, 151-158) derived by extracting, from a plurality of pixels (120) constituting the integral image (101-108), at least every other pixel (122) in at least one direction.</p> |
