Method and apparatus for removing visible artefacts in video images

摘要

A method and apparatus are provided for removing regularly occurring visible artefacts in decompressed video images. Firstly a decompressed video signal is received. This is filtered frame by frame to extract data related to the artefacts. The thus extracted data is then processed in a neural network processor which has been trained to identify the artefacts in order to produce data identifying their locations. The video signal is then corrected to reduce the effect of the thus identified artefacts.