| 摘要 |
In, for example, a motion compensated video standards converter (Figure 1) wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving a plurality of motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame; firstly (30, 31, 38 in Figure 38) a respective motion vector is derived, from the plurality of motion vectors, for each pixel in each block of each input field or frame by luminance matching each pixel in an input field or frame with the pixel pointed to by the respective motion vectors in the previous and following input fields or frames, and secondly (49, 52 in Figure 39), a respective motion vector is derived for each pixel in each block of each output field or frame by comparing the motion vectors so derived for the two input field or frames which are temporally nearest to the output field or frame. |
