Patent ID: 7805018
Filing Date: 2010-09-28
Classification: H04N

Abstract:
1. A method of processing a sequence of digital images, intended to detect a grid (SG, RG) corresponding to blocking artifacts within said sequence of digital images using a circuit suitably programmed to perform the steps of: detecting a spatial grid (SG) within a portion of the image, determining a current reference grid (RG(t)) from a current spatial grid (SG(t)) and a preceding reference grid (RG(t- determining corrected blocking artifacts in said current reference grid (RG(t)) based on artefacts within said current spatial grid SG(t) and artefacts within said preceding reference grid RG(t- assigning said corrected blocking artefacts to said current reference grid RG(t); and outputting said current reference grid RG(t), wherein said grid (SG, RG) comprises sets of at least one block artefact within each row and, wherein an indicator of the current reference grid (RG(t)) is updated from the corresponding indicator of the preceding reference grid (RG(t-