Cross component based side information for adaptive loop filter in video coding

By integrating cross-component side information into loop filters and bitstream signaling, the solution addresses suboptimal filtering in video coding, improving video quality and reducing bandwidth usage.

WO2026061398A1PCT designated stage Publication Date: 2026-03-26DOUYIN VISION CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-09-17
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Existing video coding technologies face challenges in efficiently utilizing cross-component side information for improved filtering, particularly in chroma components, leading to suboptimal video quality and increased bandwidth usage.

Method used

Employing cross-component based side information as input into loop filters, including chroma-related information at various coding stages, to enhance filtering processes in video coding, such as ALF and CCALF, and incorporating this information into bitstream signaling for adaptive filtering.

Benefits of technology

Improves video quality by optimizing filtering across chroma components, reducing bandwidth requirements, and enhancing the efficiency of video coding processes.

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Abstract

A mechanism for processing video data is disclosed. The mechanism includes determining to employ cross-component based side information as input into a loop filter. A conversion is performed between a visual media data and a bitstream based on the loop filter.
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Citation Information

Patent Citations

  • Mixed-model cross-component prediction mode

    US20240015279A1

  • Method and device for processing video signal

    WO2021194223A1

  • Methods and devices for adaptive loop filtering and cross-component adaptive loop filter

    WO2024073145A1

  • Side information preparation for adaptive loop filter in video coding

    WO2024149325A1