Abstract: |
The invention belongs to video coding field in signal processing, relating to a fast sub-pixel motion estimating method based on prediction direction correction/statistic prediction, mainly in sub-pixel motion estimations of 1/2, 1/4, 1/8, etc, using the result of the preceding stage search precision motion estimation as well as the statistic information at current precision to predict the current stage motion vector and introducing a search cut-off criterion. At the same time of keeping the coding rate distortion characteristics of existing techniques, it extremely reduces operating complexity of sub-pixel motion estimation in hardware and software. It is not limited to H.264 international standard, but able to expanded to other applications to international standard and non-international standard video coding. |