| 摘要 |
In one embodiment, a method determines one or more luma interpolation filters for interpolating sub-pel pixel values for a luma component. The one or more luma interpolation filters have a first number of coefficients. Then, the method determines one or more chroma interpolation filters for interpolating sub-pel pixel values for a chroma component. The one or more chroma interpolation filters have a second number of coefficients where the second number of coefficients is less than the first number of coefficients. When the one or more chroma interpolation filters should be used to interpolate a sub-pel pixel value for the luma component, the method uses a chroma interpolation filter to interpolate a sub-pixel value for the luma component by applying coefficients of the chroma interpolation filter to corresponding pixel values for the luma component. |
