| 摘要 |
In a prior art method for estimating motion between consecutive television pictures, a picture is divided into blocks, i.e. picture areas, and by using block matching, a matching block is searched from the search area of a subsequent picture, the contents whereof being equivalent to the contents of the reference block of the preceding picture, whereby from a displacement of the matching block relative to the reference block a motion vector for the reference block is obtained. According to the invention, a search area consists of several concentric, interlaced, preferably circular, areas, in each of which the best matching is searched. The x and y coordinates thereof are stored in the memory in the form of vector components of a motion vector candidate. For the x components and the y components of the search areas of the reference block and of the respective search areas of the adjacent blocks thereof a median operation is accomplished, and thereafter, from the medians of the x components and from the medians of the y components of the search areas, medians are again calculated, whereby the motion vector of the reference block is obtained. <IMAGE> |
