Blockübereinstimmungsbewegungsauswertung mit einer gewichteten Funktion

摘要

A blocking matching motion estimation apparatus estimates a displacement of a search block in a current frame with respect to each of candidate blocks in a previous frame to produce motion vectors and error functions representing the similarity between the search block and a candidate block. The motion estimating apparatus employs a weight function to weight a number of error functions based on a MSE measurement and selects a weighted error function entailing a minimum error to produce a motion vector corresponding thereto. The weight function includes a local variance for a localized subblock defined in the search block. Another embodiment of the weight function includes a gradient of pixels in the search block filtered by a 2-dimensional gradient filter. <IMAGE>