Methods, apparatuses, and media for decoding a video signal

By utilizing the cross-component relationship between luminance and chrominance components in video encoding and decoding, the chrominance encoding and decoding is improved, solving the problem of low efficiency in high-definition video data encoding and decoding, and achieving more efficient video data compression.

CN116366859BActive Publication Date: 2026-07-14BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
Filing Date
2021-07-28
Publication Date
2026-07-14

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Abstract

A method, apparatus, and medium for decoding a video signal are disclosed. The method for decoding a video signal includes receiving a video signal including a first component and a second component; receiving a plurality of offsets associated with the second component; obtaining a class index associated with the second component using a sample value of the first component; selecting an offset for the second component from the plurality of offsets based on the class index; and modifying the second component based on the selected offset, wherein the first component is a luma component and the second component is a chroma component, and wherein obtaining the class index associated with the second component using the sample value of the first component includes obtaining a first variable using a first sample value of the first component; obtaining a second variable using a second sample value of the first component; and obtaining the class index based on the first variable and the second variable.
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