Patent ID: 7426303

Claim:
An image expanding apparatus, comprising: coding parameter detecting means for detecting coding parameters from an image code, said image code including a plurality of layout objects, each layout object of said plurality of layout objects including a plurality of tiles, said coding parameters including a number of layout objects of the plurality of layout objects that are in a particular page; expanding parameter designating means for designating expanding parameters, said expanding parameters including a number of particular layout objects to be displayed in an expanded image; extracting parameter calculating means for calculating extracting parameters based on the coding parameters and the expanding parameters, said extracting parameters including (i) one or more certain layout objects of the plurality of layout objects that are necessary for providing the expanded image and (ii) for each layout object of the one or more certain layout objects, one or more particular tiles of the plurality of tiles of the layout object that are to be used to provide the expanded image; and code extracting means for extracting a code necessary for obtaining the expanded image designated by the expanding parameters from the image code with reference to the extracting parameters; wherein the coding parameters further include vertical and horizontal sizes in pixels of a page image and a size of a tile, wherein the expanding parameters further include an expanded image size proportional to a resolution of the expanded image and an image display area for each of the particular layout objects, and wherein the extracting parameter calculating means is configured to further calculate as the extracting parameters a resolution level necessary for expanding an image based on the coding parameters and the expanding parameters.