| 摘要 |
<p>A spatial prediction method for video encoding is provided, which belongs to the field of video image process. The method includes the following steps: A. according to the prediction encoding mode, the encoder uses the mode selection based on the boundary direction, the mode selection based on the context model and the mode selection based on the encoding mode of the block in the same position of the previous frame image respectively, to determine several available candidate prediction encoding modes; B. the encoder executes the prediction encoding according to the candidate prediction encoding modes, and calculates the Lagrangian cost function value of each candidate prediction encoding mode; C. the encoder compares the Lagrangian cost function values of the candidate prediction encoding modes, and selects the candidate prediction encoding mode which makes the Lagrangian cost function value the minimum as the optimum prediction encoding mode. Using the method above, the high judging accuracy is ensured, at the same time the calculating complexity is reduced, and the calculating quantity is reduced.</p> |
