| 摘要 |
PROBLEM TO BE SOLVED: To make it easy to transmit data through a network by lightening the load by reducing the amount of data to be stored among two-dimensional CG image data for generating a three-dimensional CG image. SOLUTION: A system is equipped with a CG image difference data extracting means 18 which regards as reference CG images one or more images among two or more two-dimensional CG images generated by a two-dimensional CG image generating means 1 as images observed from different directions and extracts differences between the reference CG images and other generated CG images, a data compressing means 19 which compresses data, a compressed data unfreezing means 48 which restores compressed data, and a two-dimensional CG image data restoring means 49 which restores at least two or more two-dimensional CG image data generated as the images observed from the different directions according to the unfrozen CG image data and CG image difference data.
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