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Coding dependency indication in scalable video coding

A video decoder and scaling technology, applied in the direction of digital video signal modification, TV, electrical components, etc., can solve the problems of end-to-end delay increase, achieve small end-to-end delay, avoid decoding and caching, reduce computing load and The effect of memory consumption

Inactive Publication Date: 2008-07-02
NOKIA CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, this increases end-to-end latency, which is unacceptable for real-time vision applications

Method used

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  • Coding dependency indication in scalable video coding
  • Coding dependency indication in scalable video coding
  • Coding dependency indication in scalable video coding

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Embodiment Construction

[0027] The present invention is applicable to all video coding methods using scalable video coding. Video coding standards include ITU-T H.261, ISO / IEC MPEG-1 Visual, ITU-T H.262 or ISO / IEC MPEG-2 Visual, ITU-T H.263, ISO / IEC MPEG-4 Visual and ITU -T H.264 (also known as ISO / IEC MPEG-4 AVC). In addition, efforts are underway for new video coding standards. One of these is the Scalable Video Coding (SVC) standard which will become the scalable extension of H.264 / AVC. The SVC standard is currently being developed under the JVT, a joint video team formed by ITU-T VCEG and ISO / IEC MPEG. The second effort is the development of Chinese video coding standards organized by the Chinese Audio Video Coding Standard Working Group (AVS).

[0028] The following is an exemplary description of the present invention by taking H.264 video coding as an example. H.264 encoding will be described with a level of detail deemed sufficient for an understanding of the invention and its preferred em...

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Abstract

A method of encoding and decoding a scalable video data stream comprising a base layer and at least one enhancement layer. encoding a scalable data stream, wherein the data stream comprises at least one non-essential picture at a temporal position of a layer, wherein the non-essential picture is not required for decoding a picture in an upper layer at said temporal position and following said temporal position in decoding order pictures; and signaling information of at least one non-essential picture in the scalable video data stream. In the decoding stage, the signaled information is decoded, and the time position and the layers above the non-essential picture are detected at the time position and following the time position in decoding order without decoding the non-essential picture. Picture decoding.

Description

technical field [0001] The present invention relates to scalable video coding and in particular to indicating coding dependencies in scalable video coding. Background technique [0002] Some video coding systems utilize scalable coding where some units or groups of units of a video sequence can be removed without affecting the reconstruction of other parts of the video sequence. Scalable video coding is a desirable feature for many multimedia applications and services used in systems utilizing decoders with a wide range of processing capabilities. Scalable bitstreams can eg be used for rate adaptation of precoded unicast streams in streaming servers and for sending a single bitstream to terminals with different capabilities and / or with different network conditions. [0003] Scalability is typically implemented by grouping image frames into hierarchical layers. The image frames encoded into the base layer image frames basically include only image frames necessary for decodi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26
CPCH04N19/132H04N19/159H04N19/172H04N19/34H04N19/44H04N19/46H04N19/61H04N19/70
Inventor 王业奎鲍亦亮
Owner NOKIA CORP
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