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Enhanced temporal motion vector prediction for scalable video coding

A technology of motion vector prediction and spatial motion vector, applied in digital video signal modification, image communication, electrical components, etc., can solve low efficiency and other problems

Active Publication Date: 2015-12-02
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the process performance of known scalable video coding systems, such as generation of temporal motion vector predictors and / or reference list selection exhibits inefficiencies

Method used

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  • Enhanced temporal motion vector prediction for scalable video coding
  • Enhanced temporal motion vector prediction for scalable video coding
  • Enhanced temporal motion vector prediction for scalable video coding

Examples

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Embodiment Construction

[0037] figure 1 An example scalable video coding inter-layer prediction (ILP) mechanism including a base layer (BL) and an enhancement layer (EL) is described. As used herein, a BL may include the lowest layer of a video stream, a layer lower than an enhancement layer, and / or the like. The base layer and enhancement layer can represent two adjacent spatially scalable layers with different resolutions. The base layer may include pictures with a lower resolution than pictures in the enhancement layer. This inter-layer prediction mechanism can improve the efficiency of scalable video coding systems. This mechanism can be applied to multiple layers of the scalable video coding architecture. In one or both of the base layer or the enhancement layer, motion-compensated prediction and / or intra-prediction can be utilized (by figure 1 The dotted line in ) represents, for example, as in the standard H.264 encoder. Inter-layer prediction may exploit base layer information, such as s...

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Abstract

In enhancement layer (EL) coding, the temporal candidate(s) may be derived the merge mode and the non-merge mode. Selection of the reference index of a current prediction unit (PU) and of the reference list of a co-located PU may be considered jointly when constructing the temporal candidate of EL for the merge mode. The selection^) may be made such that a motion vector (MV) scaling operation may be avoided. A selected motion vector prediction candidate may be added to a merging candidate list in a position before that of a spatial motion vector prediction candidate. A selected motion vector prediction candidate may be added to the merging candidate list in place of a spatial motion vector prediction candidate.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 807,639, filed April 2, 2013, the contents of which are incorporated herein by reference. Background technique [0003] Video coding systems are commonly used to compress digital video signals to, for example, reduce consumed storage space and / or reduce transmission bandwidth consumption associated with these signals. For example, block-based hybrid video coding systems are widely deployed and frequently used. [0004] Scalability can be achieved in scalable video coding systems, such as High Efficiency Video Coding (HEVC). Scalability may enable transmission and / or decoding of one or more partial bitstreams and may provide video services with lower temporal and / or spatial resolution, and / or with reduced fidelity, while maintaining relative High reconstruction quality at bitstream rates. [0005] However, the process performance of known s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/31H04N19/70H04N19/33H04N19/51H04N19/583H04N19/59H04N19/587H04N19/46
CPCH04N19/587H04N19/31H04N19/33H04N19/46H04N19/52H04N19/58H04N19/59H04N19/172H04N19/513
Inventor 修晓宇贺玉文叶琰Y·何
Owner INTERDIGITAL CE PATENT HLDG
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