Error concealment apparatus for video signal processors.

摘要

Error concealment apparatus for correcting errors in signals representing video images includes means (31,22,32) for detecting image gradients in an area surrounding a lost block of image data. Circuitry (34) responsive to these image gradients generates a plurality of blocks of directionally interpolated pixel values. The pixel values in the respective blocks of directionally interpolated pixel values are sorted according to amplitude, and then pixel values from mutually exclusive positions in the respective blocks are selected (36) to form a block of pixel values for error concealment.