| 摘要 |
The invention relates to a video coding method based on a subband coding scheme applied to a sequence of two-dimensional frames. Said method comprises a subband decomposition step of a current frame (F2), a motion prediction step, carried out with respect to a previous or reference frame (F1), and a coding step. According to the invention, the motion prediction step is based on a redundant decomposition of the reference frame, according to the following procedure: in the approximation subband, the motion is estimated by means of a full search operation applied to each pixel of the current frame, and for the other subbands, the motion is estimated by means of a pel-recursive motion estimation algorithm using for the prediction the reference redundant subband reconstructed from the subsampled subbands. Said pel-recursive motion estimation algorithm itself comprises an initialization sub-step, a determination and updating sub-step, and a decision sub-step. |
