Video-signal decoder and method for removing interferences in a video image

Abstract

The invention relates to a video signal decoder for generating a video image that consists of cumulative image data blocks, of a differential image comprising differential image data blocks and motion vectors, and of a down-sampling device (28) that down-samples the cumulative image data blocks for producing reduced reference image data blocks. The video signal decoder further comprises a reference image data memory (30) for intermediate storage of the reduced reference data blocks, an up-sampling devices that up-samples the reduced reference image data blocks that are read out from the reference image data memory and that are motion-compensated by means of the motion vectors, thereby producing reference image data blocks. A reconstruction filter (36) filters the reference image data blocks produced by up-sampling and produces predecessor image data blocks, said reference image data blocks being filtered by interpolation within the data block limits. A summation circuit (12) produces a sum of the produced predecessor image data blocks and the differential image data blocks to produce the cumulative image data blocks.

Dependencies are inferred from the claim text.