| 摘要 |
The method involves performing a correlation between the luminance values of the current pixels and those of a preceding or following image. The luminance values which are used for the comparison are those relating to pixels marked at the average value of luminance in a region defined about each corresponding pixel. The correlation is effected by calculating the displaced frame difference (DFD) with respect to the luminance values. This includes dividing the video image into image blocks and a correlation between the blocks of successive images is effected in a search window. The correlation may be performed by calculating the average absolute error (EMA) which is the sum for the block of the relative luminance errors of the pixels in the current block. |
