| 摘要 |
A method is disclosed for transmitting video images over a data communication network, in which method the video image is encoded at the sending end, transmitted, and decoded at the receiving end. The first frame is compressed and transmitted to the receiving end where it is stored in image memory. A copy of the first frame is retained at the transmitting end and divided into blocks. The next frame is also divided into blocks. The blocks of the first frame and the blocks of the next frame are compared to determine a block difference for each block. For each block, the difference between successive blocks is compressed and transmitted if the block difference for the block exceeds a predetermined threshold. |
