Interpolation filter support for sub-pixel resolution in...

H - Electricity – 04 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04N 7/50 (2006.01)

Patent

CA 2719388

This disclosure describes filtering tech-niques applied by an encoder and a decoder during the prediction stage of a video encoding and/or decoding pro-cess. The filtering techniques may enhance the accuracy of predictive data used during fractional interpolation, and may improve predictive data of integer blocks of pixels. There are several aspects to this disclosure, including a useful twelve-pixel filter support that may be used for in-terpolation, techniques that use coefficient symmetry and pixel symmetry to reduce the amount of data needed to be sent between an encoder and a decoder to configure the fil-ter support for interpolation, and techniques for filtering data at integer pixel locations in a manner that is similar to sub-pixel interpolation. Other aspects of this disclosure concern techniques for encoding information in the bit-stream to convey the type of filter used, and possibly the filter coefficients used. Predictive coding of filter coeffi-cients is also described.

La présente invention concerne des techniques de filtrage appliquées par un codeur et un décodeur au cours de létape de prédiction dun processus de codage et / ou de décodage vidéo. Les techniques de filtrage sont susceptibles daméliorer la précision des données prédictives utilisées lors dune interpolation fractionnaire, et daméliorer les données prédictives de blocs entiers de pixels. Entre autres aspects de linvention, on décrit un support de filtre sur douze pixels susceptible dêtre utilisé avantageusement pour linterpolation, des techniques qui utilisent la symétrie des coefficients et la symétrie des pixels pour réduire la quantité de données quil est nécessaire denvoyer entre un codeur et un décodeur en vue de configurer le support de filtre pour linterpolation, et des techniques visant à filtrer les données à des emplacements de pixels entiers dune manière similaire à linterpolation sous-pixel. Dautres aspects de la présente invention concernent des techniques de codage dinformations dans le flux binaire afin dacheminer le type de filtre utilisé, et éventuellement les coefficients de filtrage utilisés. On décrit également le codage prédictif des coefficients de filtrage.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Interpolation filter support for sub-pixel resolution in... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interpolation filter support for sub-pixel resolution in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interpolation filter support for sub-pixel resolution in... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1469755

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.