Selective video frame rate upconversion

H - Electricity – 04 – N

Patent

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Details

H04N 7/01 (2006.01) H04N 7/46 (2006.01)

Patent

CA 2646198

This disclosure is directed to techniques for selective video frame rate upconversion (FRUC) in a video decoder. A video decoder selectively enables or disables FRUC based on one or more adaptive criteria. The adaptive criteria may be selected to indicate whether FRUC is likely to introduce spatial artifacts. Adaptive criteria may include a motion activity threshold, a mode decision threshold, or both. The criteria are adaptive, rather than fixed. When the criteria indicate that a frame includes excessive motion or new content, the decoder disables FRUC.

L'invention concerne des techniques permettant une conversion optimisée de vitesse de trame vidéo sélective (FRUC) dans un décodeur vidéo. Un décodeur vidéo active ou désactive FRUC de façon sélective sur la base d'un ou plusieurs critères adaptatifs. Les critères adaptatifs peuvent être sélectionnés pour indiquer si FRUC est susceptible d'introduire des artefacts spatiaux. Les critères adaptatifs peuvent comprendre un seuil d'activité de mouvement, un seuil de décision de mode ou les deux. Les critères sont adaptatifs plutôt que fixes. Lorsque les critères indiquent qu'un cadre comprend un mouvement excessif ou un nouveau contenu, le décodeur désactive FRUC.

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