Abstract
This article provides an overview of H.263, the new ITU-T Recommendation for low-bit-rate video communication. H.263 specifies a coded representation for compressing the moving picture component of audio-visual signals at low bit rates. The basic structure of the video source coding algorithm is taken from ITU-T Recommendation H.261 and is a hybrid of interpicture prediction to reduce temporal redundancy and transform coding of the prediction residual to reduce spatial redundancy. The source coder can operate on five standardized picture formats: sub-QCIF, QCIF, CIF, 4CIF, and 16CIF. The decoder has motion compensation capability with half-pixel precision, in contrast to H.261 which uses full-pixel precision and employs a loop filter. H.263 includes four negotiable coding options which provide improved coding efficiency: unrestricted motion vectors, syntax-based arithmetic coding, advanced prediction, and PB-frames.
Keywords
Computer scienceMotion compensationCoding (social sciences)Coding tree unitResidualComputer hardwareReal-time computingArtificial intelligenceDecoding methodsAlgorithm
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Publication Info
- Year
- 1996
- Type
- article
- Volume
- 34
- Issue
- 12
- Pages
- 42-45
- Citations
- 1044
- Access
- Closed
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Cite This
Karel Rijkse
(1996).
H.263: video coding for low-bit-rate communication.
IEEE Communications Magazine
, 34
(12)
, 42-45.
https://doi.org/10.1109/35.556485
Identifiers
- DOI
- 10.1109/35.556485