| 摘要 |
Provided are an image prediction method and related device, the method comprising: determining motion vectors of W control points in a current image block; calculating and obtaining, using a motion model and the motion vectors of the W control points, motion vectors of P pixel units in the current image block, wherein resolution of the determined motion vectors of the W control points is 1/n of pixel resolution, resolution of the calculated motion vectors of each pixel unit in the P pixel units is 1/N of the pixel resolution, the P pixel units are a part or all of the pixel units in the current image block, and N is greater than n; and performing interpolation filtering, using an interpolation filter having a phase number of Q, on pixels of reference pixel units in a reference image corresponding to all the pixel units in the P pixel units, so as to obtain pixel prediction values of all the pixel units in the P pixel units, where in Q is greater than n. An embodiment of the present invention provides a technical solution facilitating a reduction in computational complexity in an image prediction process. |
