VORRICHTUNG ZUR HIERARCHISCHEN BEWEGUNGSSCHÄTZUNG IN BILDSEQUENZEN

摘要

PCT No. PCT/FR93/01241 Sec. 371 Date Dec. 18, 1995 Sec. 102(e) Date Dec. 18, 1995 PCT Filed Dec. 14, 1993 PCT Pub. No. WO94/15436 PCT Pub. Date Jul. 7, 1994The device includes a set of processing macromodules connected in cascade and organized in accordance with hierarchical levels. Each macromodule is structured so as to partition the current image into macroblocks of a determined size corresponding to its hierarchical level so as to transmit a motion vector field to the block which follows it, and includes first circuits for calculating the displaced inter-image differences DFDi and the gradients on the basis of the values of luminance of the pixels of the video image and of the displacement vectors of each image preceding or following the current image; second circuits for performing blockwise the summations of the displaced inter-image differences and third circuits for performing corrections of the displacement vectors of the image.