Image signal encoding / decoding method and apparatus therefor

By dividing video pictures into tiles and determining slice structures, the method addresses the inefficiencies in existing video compression standards, enhancing encoding/decoding efficiency and improving compression performance.

JP7700785B2Active Publication Date: 2025-07-01KONINKLIJKE PHILIPS NV
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Patent Information

Application Number
JP2022515792
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-12-31
Filing Date
2020-09-10
Publication Date
2025-07-01
Estimated Expiration
2040-09-10

AI Technical Summary

Technical Problem

The increasing demand for high-quality video services has led to a significant increase in data volume, and existing video compression standards like HEVC are nearing their performance limits, necessitating more efficient encoding and decoding methods.

Method used

A method for dividing a picture into tiles and determining a slice division structure based on a tile division structure during video signal encoding and decoding, including parsing specific information about tile and slice numbers to improve encoding/decoding efficiency.

Benefits of technology

This approach enhances encoding/decoding efficiency by allowing pictures to be divided into tiles and sub-pictures, improving the overall compression performance of video signals.

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Abstract

The video decoding method according to the present disclosure includes a step of parsing tile column number information indicating a value obtained by subtracting 1 from the number of tile columns included in the i-th slice; a step of parsing tile row number information indicating a value obtained by subtracting 1 from the number of tile rows included in the i-th slice; and, if the tile column number information and the tile row number information are both 0, a step of further parsing count information regarding the number of slices for which height information within a tile including the i-th slice is explicitly signaled.
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Citation Information

Patent Citations

  • Image / video coding method and apparatus

    WO2021107622A1

  • Method and device for signaling information related to slice in image / video encoding / decoding system

    WO2021107626A1