Video coding method and apparatus using block vectors with adaptive spatial resolution

Adaptive signaling of block vector spatial resolution and differences addresses the inefficiencies in conventional video encoding for screen content, particularly in super high-definition scenarios, by enabling sub-pixel unit representation and improving encoding efficiency.

JP7863794B2Active Publication Date: 2026-05-22HYUNDAI MOTOR CO LTD +2
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
HYUNDAI MOTOR CO LTD
Filing Date
2022-03-28
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Conventional video encoding methods for screen content, such as HEVC and VVC, fail to efficiently encode super high-definition content due to the lack of consideration for sub-pixel units in block vector representation, leading to reduced encoding efficiency.

Method used

A method for adaptively signaling the spatial resolution of block vectors and the sign of block vector differences, allowing for sub-pixel unit representation, by generating and combining block vector predictors and differences to improve encoding efficiency.

Benefits of technology

Improves coding efficiency by adaptively signaling the spatial resolution of block vectors, enhancing encoding performance for super high-definition screen content.

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Abstract

A video coding method and apparatus using block vectors with adaptive spatial resolution is provided. [Solution] The video coding method and apparatus of the present invention adaptively signals the spatial resolution of a block vector (BV) representing the position of a reference block, or adaptively signals the sign of a block vector difference value, in order to improve coding efficiency when applying Intra Block Copy (IBC) to a current block.
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