| 摘要 |
<p>A process for coding by transformation for the transmission of an image signal, comprises a stage of breaking down the image into blocks, each block containing a set of matrix-organized digital data and representing part of the picture, said process being characterized in that it comprises, for each block a step of detecting the movement of the block by comparing said block of the current image with the corresponding block of the preceding image, transmitting a non-refreshing code for the block and an identification code for the block in the image if the block is fixed, if a movement is detected in the block, breaking down the block into several subblocks, movement detection in each subblock by comparison with the corresponding subblock of the corresponding block of the preceding picture and transmission of a code which is a function of the movement of the subblock, if the block is moving.</p> |
