| 摘要 |
<p>A motion estimation system, particularly for television applications, comprises a 3D-recursive search block-matching device for generating motion vectors representing the motion of the content of pixel blocks in response to successive fields or frames of video signals. This block-matching device is provided with a motion estimator (2) for generating estimated motion vectors, a spatial prediction memory (3) and/or a temporal prediction memory (4), wherein the estimated motion vectors are stored. The stored motion vectors form a basis for generating further motion vectors for next pixel blocks and/or next images. Between the spatial prediction memory (3) and/or the temporal prediction memory (4) on the one side and the motion estimator (2) on the other side a vector filter (5,6) is provided, which, when a prediction candidate is coming from a location outside a predefined neighborhood, either substitutes the prediction candidate with a safe one or modifies the prediction candidate according to a predefined algorithm. <IMAGE></p> |
