Methods and apparatuses of video processing for bi-directional prediction with motion refinement in video coding systems

A bidirectional prediction, video encoding and decoding technology, which is used in digital video signal modification, electrical components, image communication, etc.

Active Publication Date: 2021-10-19
HFI INNOVATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The computational complexity of BDOF is much higher than that of traditional bidirectional prediction

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  • Methods and apparatuses of video processing for bi-directional prediction with motion refinement in video coding systems
  • Methods and apparatuses of video processing for bi-directional prediction with motion refinement in video coding systems
  • Methods and apparatuses of video processing for bi-directional prediction with motion refinement in video coding systems

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Embodiment Construction

[0059] It will be readily understood that the components of the invention may be arranged and designed in a variety of different configurations, as generally described and illustrated in the drawings herein. Accordingly, the following more detailed description of embodiments of the system and method of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention, as shown in the accompanying drawings. In this disclosure, systems and methods are described for processing bi-predictive blocks using motion fine-tuning codec tools, where each or combination of the methods can be implemented in a video encoder or video decoder. Respectively Figure 12 and Figure 13 An exemplary video encoder and decoder implementing a combination of one or more methods is shown in . Various embodiments in the present disclosure reduce the computational complexity of implementing motion fine-tuning codec...

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Abstract

Exemplary video processing methods and apparatuses for encoding or decoding a current block by bi-directional prediction are disclosed. L0 and L1 reference blocks are determined for the current block, and a motion vector refinement is applied to refine the L0 and L1 reference blocks using a motion estimation search performed on each processing unit in the current block. A bi-directional optical flow operation is early terminated according to a cost of each processing unit in the current block. The processing units for cost calculation in the motion vector refinement and the bi-directional optical flow early termination are unified. The bi-directional optical flow operation is applied to the current block to further refine the L0 and L1 reference blocks if the bi-directional optical flow operation is not early terminated. A final inter predictor is derived from the refined L0 and L1 reference blocks for encoding or decoding the current block.

Description

[0001] 【cross reference】 [0002] The present invention claims the priority of the U.S. Provisional Patent Application No. 62 / 813,806 filed on March 5, 2019, entitled "Alignment of DMVR and BDOF process". The content of this US Provisional Patent Application is incorporated herein by reference. 【Technical field】 [0003] The invention relates to a video processing method and device in a video encoding and decoding system. In particular, the present invention relates to encoding or decoding video data by bidirectional prediction in inter picture prediction. 【Background technique】 [0004] The High Efficiency Video Codec (HEVC) standard is the latest video codec standard developed by the Video Coding Expert Group of the Joint Collaborative Team on Video Coding (JCT-VC) of the ITU-T Study Group. The HEVC standard improves the video compression performance of its ongoing standard H.264 / AVC to meet the demand for higher picture resolution, higher frame rate and better video qua...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04N19/51H04N19/00
CPCH04N19/577H04N19/56H04N19/523H04N19/61H04N19/105H04N19/132H04N19/159H04N19/176H04N19/513
Inventor陈庆晔庄子德
OwnerHFI INNOVATION INC