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Method and apparatus for constructing reference picture lists for scalable video coding svc.

A reference image list and reference image technology, applied in image communication, digital video signal modification, television, etc.

Active Publication Date: 2009-01-28
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, hierarchical B-frame structures are not required, but decoders MUST support all Group of Pictures (GOP) structures

Method used

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  • Method and apparatus for constructing reference picture lists for scalable video coding svc.
  • Method and apparatus for constructing reference picture lists for scalable video coding svc.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The following example (compared to figure 1 ) first shows the conventional encoding / decoding method. The base layer frame rate is 15Hz, and the enhancement layer frame rate is 30Hz. The group of picture (GOP) size is equal to 16.

[0013] base layer

decoding order

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image serial number

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[0014] Table 1: Base layer frames

[0015] enhancement layer

decoding order

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2...

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Abstract

In video coding, prediction of P- and B-frames is based on reference frames, which are indicated by reference picture lists. Scalable video coding (SVC) requires this for both, base-layer and enhancement-layer. The invention describes a decoding process for reference picture list construction for spatial enhancement layer. With just one flag of syntax modification, it provides simpler and direct reference lists construction process. By using this, complicated RPLR and other syntaxes can be skipped, and the RPLR process for spatial enhancement layer can also be avoided. The process also can be used as for error concealment when the spatial enhancement layer slice is lost.

Description

technical field [0001] The present invention relates to a method and apparatus for constructing a reference picture list for a spatial enhancement layer of scalable video. Background technique [0002] In video coding, pictures can be intra-coded (I-frames), predicted (P-frames) or bi-directionally predicted (B-frames). P frames and B frames are predicted based on pre-encoded / decoded reference frames, so a list of reference images must be provided. P frames have one list (list0), and B frames have two lists (list0, list1). Since the reference picture is used to decode other pictures, the reference picture itself is decoded and then stored. Scalable Video Coding (SVC) provides a reference picture list reordering (reference picture list reordering, RPLR) function. Spatial scalable video coding (scalable video coding, SVC) has a base layer (base layer, BL) and one or more enhancement layers (enhancement layer, EL). Currently, the UPDATE of the enhancement layer has just been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/68H04N19/895
CPCH04N7/26351H04N19/00884H04N19/00939H04N19/00266H04N19/00715H04N19/00024H04N19/0043H04N19/00545H04N19/00436H04N19/105H04N19/172H04N19/31H04N19/33H04N19/46H04N19/573H04N19/70H04N19/895
Inventor 陈颖爱德华·弗朗索瓦谢凯
Owner INTERDIGITAL CE PATENT HLDG
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