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Scalable video coding encoder with adaptive reference fgs and fgs motion refinement mechanism and method thereof

An encoding method and an encoder technology, which are applied in the field of scalable video encoding, can solve the problems that the ARFGS technology does not work properly, and achieve the effect of improving encoding efficiency

Inactive Publication Date: 2010-03-10
ELECTRONICS & TELECOMM RES INST +1
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Problems solved by technology

However, when AR FGS and FGS motion refinement techniques are used together, because according to the FGS motion refinement technique, the FGS layer is not predicted from the base layer (i.e. base quality layer or lower FGS layer) block corresponding to the FGS layer block block's residual signal, so the AR FGS technique does not work properly

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  • Scalable video coding encoder with adaptive reference fgs and fgs motion refinement mechanism and method thereof
  • Scalable video coding encoder with adaptive reference fgs and fgs motion refinement mechanism and method thereof
  • Scalable video coding encoder with adaptive reference fgs and fgs motion refinement mechanism and method thereof

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[0040]The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are presented so that this disclosure will be thorough and complete, and will convey to those skilled in the art Person fully conveys the concept of the present invention. Like reference numerals refer to like elements throughout the drawings.

[0041] SVC is an important technique for video communication in heterogeneous environments. The SVC technique allows truncation of an original video bitstream to provide an output bitstream corresponding to a different presentation of the original content, under the constraints of a terminal or network. The scalability of SVC video is supported in the following three dimensions, namely, space, time, and SNR....

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Abstract

Provided are alternatives for improving coding efficiency when an AR-FGS technique and an FGS motion refinement technique are applied to scalable video coding. When prediction of a residual signal anFGS layer is not performed, a ' prediction signal of a block related to the FGS layer is predicted in the same manner as the manner of predicting a prediction signal of a base quality layer. A scalingfactor is allowed to have a non-zero value if required, and the residual signal of the FGS layer is used to determine a scaling factor of a higher FGS layer. The AR-FGS and FGS motion refinement techniques are restricted from being simultaneously used for key pictures.

Description

technical field [0001] The present invention relates to scalable video coding (SVC) using fine-grained SNR scalability (FGS) motion refinement (motion refinement) technology and adaptive reference (AR, adaptive reference) FGS technology. Background technique [0002] In scalable video coding (SVC), FGS is an important feature for finely controlling video quality in the SNR dimension. When the FGS layer is removed, picture quality degradation due to the inter prediction structure of the SVC video signal may be propagated to subsequent pictures. [0003] Image degradation propagation can be controlled by Adaptive Reference (AR) FGS technique for improving coding efficiency. Furthermore, the FGS motion refinement technique used to set the motion vectors in each FGS layer can be used to improve the coding efficiency of the FGS layer. However, when AR FGS and FGS motion refinement techniques are used together, because according to the FGS motion refinement technique, the FGS la...

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Application Information

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IPC IPC(8): H04N7/24
Inventor 姜晶媛崔海哲金在坤洪镇佑鲁勇满张供党裵泰眠
Owner ELECTRONICS & TELECOMM RES INST
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