| 摘要 |
<p>A method and system for compressing motion image information, which can compress, with a high compression ratio and at a high speed, data or image information that can be subjected to predictive encoding and which at the same time can improve image quality. According to a first aspect of the present invention, an image within a frame is divided into blocks before an inter-frame compression procedure begins, and each block is approximated (substituted) with a single plane represented by at least three components for pixels within each block. According to a second aspect of the present invention, pixels between the original image and the image expanded after compressed are compared outputting the resulting difference information for pixels, and when a pixel that causes greater difference than a given parameter (threshold) to occur exists, intra-frame compression is performed using a smaller block size. According to a third aspect of the present invention, when the respective I blocks, which are spatially divided, are dispersed between each frame along the temporal axis, no I block is inserted into any block within the frame that has been updated due to difference between frames being greater than parameter (threshold) P during a designated period of time. <IMAGE></p> |
