| 摘要 |
One document image is divided according to attributes such as a character, a graphic, a table, etc., and the divided partial images are stored as one file. For example, each of the partial images is stored by being assigned with a priority, reduced in stages, and compressed with a compression method suitable for each of the attributes. If a user, etc. issues the instruction for making more of a desired portion visible and easy to view when he or she displays the document image, the user can freely make an easy-to-view display that the user desires according to the contents of the instruction. For example, the document image can be displayed by making an empty space between partial images smaller, a partial image with a higher priority can be displayed earlier, a specified partial image can be displayed larger, etc.
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