H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/50 (2006.01) G06T 5/20 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01) H04N 5/21 (2006.01)
Patent
CA 2178961
The visibility of mosquito and blocking artifacts in a video compression system are effectively suppressed by calculating a post- processed pixel intensity (300). A post-processed pixel intensity is determined using a predetermined noise variance (304), a predetermined autocorrelation coefficient (306), and a local neighbourhood of pixels (308) that includes a plurality of previously post-processed pixel intensities and a plurality of original pixel intensities. This eliminates the dependency on local signal and noise power estimates.
La visibilité des artefacts de type moustiques et de blocs dans un système de compression vidéo est éliminée efficacement par le calcul d'une intensité de pixels post-traitée (300). Une intensité de pixels post-traitée se détermine avec une variance de bruit prédéterminée (304), un coefficient d'autocorrélation prédéterminé (306) et une proximité locale de pixels (308) qui comprend plusieurs intensités de pixels post-traitées préalable ainsi que plusieurs intensités de pixels d'origine. Cela élimine la dépendance vis-à-vis des estimations de puissance de signaux et de bruits locaux.
Gowling Lafleur Henderson Llp
Motorola Inc.
LandOfFree
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