| 摘要 |
<P>PROBLEM TO BE SOLVED: To make it possible to not only reduce the data volume of an image but also easily present an area high in the degree of importance with high image quality. <P>SOLUTION: An area setting part 21 sets a plurality of layer areas different in area sizes to an image having resolution higher than a preset resolution by hierarchizing them. An image date extraction part 22 extracts image data from image data DVin on a layer area basis. An image data conversion part 23 down-converts image data DWa extracted on a layer area basis to the preset resolution. An encoding process and the like of the image data on a layer area basis after the down-converting are executed to be output from an output part 30. Since the image data are down-converted to the predetermined resolution, the data volume is reduced. When the images in the respective layer areas are displayed by superposing them on one another, the area high in the degree of importance can be presented with high image quality. <P>COPYRIGHT: (C)2009,JPO&INPIT |
