| 摘要 |
A method for selecting a picture prediction mode from a candidate pool of picture prediction modes for video compression takes advantage of similarity in implementation between SKIP and DIRECT modes and one other inter-picture prediction modes, namely, the 16×16 partition mode. The SKIP/DIRECT modes are considered if and only if the final prediction information of the 16×16 partition mode, including motion vector, reference picture index, and prediction direction, is the same as that of the respective SKIP and/or DIRECT modes. The same motion prediction, reference picture index and prediction direction are used for the 16×16 partition mode and the SKIP/DIRECT modes, and therefore, the same interpolation scheme can be used for both SKIP/DIRECT and 16×16 partition modes. |
| 主权项 |
1. A method for prediction mode selection for video compression among a plurality of prediction modes, comprising:
calculating prediction information for each of the prediction modes, including
calculating, by using a 16×16 partition mode, a first motion vector, a first reference picture index, and a first prediction direction; andcalculating, by using a direct mode, a second motion vector, a second reference picture index, and a second prediction direction; comparing calculated prediction information of the 16×16 partition mode to the calculated prediction mode of the direct mode; retaining certain ones of the prediction modes as a function of said compared prediction information; where the retaining further comprises
removing the direct mode if said first motion vector is not equal to said second motion vector; andretaining the direct mode if said first motion vector equals said second motion vector, said first reference picture index equals said second reference picture index, and said first prediction direction equals said second prediction direction; and selecting a prediction mode from the retained prediction modes. |
