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Context coding for matrix-based intra prediction

An intra-frame prediction and context technology, which is used in image communication, digital video signal modification, electrical components, etc., and can solve the problem of digital video occupying the maximum bandwidth.

Pending Publication Date: 2021-11-30
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 remains the largest bandwidth user on the Internet and other digital communication networks

Method used

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  • Context coding for matrix-based intra prediction
  • Context coding for matrix-based intra prediction
  • Context coding for matrix-based intra prediction

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Embodiment Construction

[0043]Due to the growing demand for high-resolution video, video coding methods and techniques are ubiquitous in modern technology. A video codec typically includes electronic circuitry or software that compresses or decompresses digital video, and is continually improved to provide high coding efficiency. A video codec converts uncompressed video to a compressed format and vice versa. In terms of video quality, the amount of data used to represent video (determined by the bit rate), the complexity of encoding and decoding algorithms, susceptibility to data loss and errors, ease of editing, random access, and end-to-end delay (latency ) are complex relationships. Compression formats typically conform to standard video compression specifications such as the High Efficiency Video Coding (HEVC) standard (also known as H.265 or MPEG-H Part 2), the still-to-be-finalized Versatile Video Coding (VVC) standard, or other current and / or future video encoding standards.

[0044] Embod...

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Abstract

Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes encoding a current video block of a video using a matrix intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation; and adding, to a coded representation of the current video block, a syntax element indicative of applicability of the MIP mode to the current video block using arithmetic coding in which a context for the syntax element is derived based on a rule.

Description

[0001] Cross References to Related Applications [0002] This application promptly claims priority and benefit from International Patent Application No. PCT / CN2019 / 085399 filed on May 1, 2019, under applicable patent law and / or pursuant to the rules of the Paris Convention. The entire disclosure of the above application is incorporated by reference as part of the disclosure of this application for all purposes of law. technical field [0003] This patent document relates to video coding technology, apparatus and system. Background technique [0004] Despite advances in video compression, digital video remains the largest bandwidth user on the Internet and other digital communication networks. The demand for bandwidth used by digital video is expected to continue to grow as the number of connected user devices capable of receiving and displaying video increases. Contents of the invention [0005] Devices, systems and methods related to digital video coding are described, ...

Claims

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Application Information

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IPC IPC(8): H04N19/593H04N19/132H04N19/59
CPCH04N19/593H04N19/59H04N19/132H04N19/82H04N19/117H04N19/176H04N19/186H04N19/70H04N19/91H04N19/463
Inventor 邓智玭张凯张莉刘鸿彬许继征
Owner BEIJING BYTEDANCE NETWORK TECH CO LTD