| 摘要 |
The workability for performing moving image processing and generating moving images in real time is alleviated and a desired quality of such moving image is realized without using the LOD technique. When an object image being displayed on a display monitor is enlarged or reduced, parts images are added or deleted according to the order of significance value of the respective parts images set in advance based on the distance from the viewpoint thereof. Specifically, when an object image is to be enlarged, parts images with a low significance value and which are non-display targets in the current display status will be added. Meanwhile, when an object image is to be reduced, among the parts images currently being displayed, those with the lowest significance value are deleted, in order, to become non-display targets according to the distance from the viewpoint.
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