Coding method, device, system with merge mode
A decoding and decoding tree technology, applied in digital video signal modification, electrical components, image communication, etc., can solve problems such as the influence of merging estimation, candidate block inspection is no longer accurate and applicable, and decoding performance is degraded by parallel processing.
Active Publication Date: 2021-03-26
HUAWEI TECH CO LTD
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However, in the latest development of general video coding (versatile video coding, VVC), due to the use of new partitioning modes, such as allowing binary-tree (binary-tree, BT) and ternary-tree (triple-tree, TT) partitioning and allowing non- square division, and the check of whether a candidate block belongs to MER is no longer accurately applicable, so those conditions that the merge mode relies on cannot always be satisfied, and the decoding performance especially parallel processing is degraded, and the merge estimation will be seriously affected
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[0089] It should be understood at the outset that, although an exemplary implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of currently known or existing techniques. The present disclosure should not be limited to the exemplary implementations, drawings, and techniques shown below, including the exemplary designs and implementations shown and described herein, but rather be within the scope of the appended claims and their full range of equivalents. make changes within the scope.
[0090] As mentioned before, when the decoding block is no longer divided based on QT as in HEVC, but based on BT or TT as in VVC, because the new encoding blocks generated using BT and / or TT The partition pattern no longer satisfies HEVC conditions that depend on square pattern partitioning of coding blocks, so the HEVC conditions of merge mode may no longer be suitable and / or may no longer be met. In other words, n...
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An apparatus and method for marking availability of a candidate coding block for merge estimation of a current coding block within a coding tree unit, CTU, which includes multiple coding blocks. Initially, the candidate coding block is marked as available. The candidate coding block is marked as unavailable when a predefined location of the candidate coding block is included within an extended merge estimation region, MER. The extended MER includes a current MER in which the current coding block is located and at least a portion of another MER, adjacent to the current MER. The predefined location may be a top-left or bottom-right (pixel) position of a corner of the candidate coding block. Whether the candidate coding block is located within the extended MER is determined in dependence on the positional relation between the predefined location and a position of a corner of the current coding block, with the corner being any of the upper-left, bottom-left, or bottom-right. The coding blocks may be labelled based on a processing order and grouped using a slid window. When the candidate and current coding blocks are in the same group, the candidate coding block is marked as unavailable.
Description
technical field [0001] Embodiments of the present application (disclosure) relate generally to the field of video coding, and more specifically, to the field of inter prediction using merge mode. Background technique [0002] Even describing short videos, the amount of video data required can be substantial, which can create difficulties when streaming or otherwise delivering the data over communication networks with limited bandwidth capacity. Therefore, video data is often compressed before being transmitted over modern telecommunications networks. Because storage resources may be limited, the size of the video may also be an issue when the video is stored on a storage device. Prior to transmission or storage, video data is typically encoded at the source by video compression equipment using software and / or hardware, thereby reducing the amount of data required to represent a digital video image. The compressed data is then received at the destination by a video decompre...
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IPC IPC(8): H04N19/70
CPCH04N19/70H04N19/52H04N19/513H04N19/105H04N19/176H04N19/96H04N19/436H04N19/119H04N19/56
Inventor 塞米赫·艾森力克高晗陈建乐阿南德·梅赫·科特拉王彪
Owner HUAWEI TECH CO LTD