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Sub-block based use of transform skip mode

A mode, sub-block technology, applied in the field of skip mode based on sub-block using transformation

Pending Publication Date: 2021-12-28
BEIJING BYTEDANCE NETWORK TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Despite advances in video compression, digital video still accounts for the largest amount of bandwidth used on the Internet and other digital communication networks

Method used

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  • Sub-block based use of transform skip mode
  • Sub-block based use of transform skip mode
  • Sub-block based use of transform skip mode

Examples

Experimental program
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Embodiment Construction

[0044] Embodiments of the disclosed techniques can be applied to existing video codec standards (eg, HEVC, H.265) and future standards to improve compression performance. Section headings are used in this document to improve the readability of the description and in no way limit the discussion or embodiments (and / or implementations) to the corresponding section only.

[0045] 2 Video Codec Introduction

[0046] Video codec methods and techniques are ubiquitous in modern technology due to the increasing demand for higher resolution video. Video codecs generally include electronic circuits or software that compress or decompress digital video, and are constantly being improved to provide higher codec efficiency. A video codec converts uncompressed video to a compressed format and vice versa. Video quality, the amount of data (determined by the bit rate) used to represent the video, the complexity of encoding and decoding algorithms, susceptibility to data loss and errors, ease...

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Abstract

Devices, systems and methods for lossless coding for visual media coding are described. An exemplary method for video processing includes the steps: determining, at a sub-block level of a current video block comprising multiple sub-blocks, whether a coding mode is enabled for representing a corresponding sub-block in a bitstream representation, where, for a given sub-block with the coding mode enabled, the given sub-block is represented in the coded representation without applying a forward transform or the given sub-block is reconstructed from the coded representation without applying an inverse transform, and performing, based on the determining, a conversion between the current video block of a video and the bitstream representation of the video.

Description

[0001] Cross References to Related Applications [0002] This application is duly filed to claim priority and benefit from International Patent Application No. PCT / CN2019 / 087986 filed on May 22, 2019, in accordance with applicable patent law and / or the rules of the Paris Convention. The entire disclosure of the above application is hereby incorporated by reference as part of the disclosure of the present application for all purposes prescribed by law. technical field [0003] This patent document relates to video codec technology, equipment and system. Background technique [0004] Despite advances in video compression, digital video still accounts for the largest amount of bandwidth used on the Internet and other digital communication networks. The bandwidth demand for digital video usage is expected to continue to grow as the number of interconnected user devices capable of receiving and displaying video increases. Contents of the invention [0005] Provided are device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176
CPCH04N19/176H04N19/12H04N19/122H04N19/186H04N19/59H04N19/593H04N19/70H04N19/124H04N19/119H04N19/11
Inventor 张莉张凯刘鸿彬张娜王悦
Owner BEIJING BYTEDANCE NETWORK TECH CO LTD