Video encoding method, video decoding method, encoder, decoder, and storage medium
By adaptively selecting the clamp array and clamp value to process the filter input values during the filtering process, the filter performance of ALF and CCALF is optimized, and the encoding and decoding efficiency is improved.
WO2026129252A1PCT designated stage Publication Date: 2026-06-25GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
- Filing Date
- 2024-12-19
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Existing adaptive loop filters (ALF) and cross-component adaptive loop filters (CCALF) have low performance in the encoding and decoding process, which affects the encoding and decoding efficiency.
Method used
During the filtering process, each filter adaptively selects a clamping array and, based on the selected clamping array, adaptively selects a clamping value to clamp the filter input value, thereby optimizing filter performance.
Benefits of technology
It improves encoding and decoding performance and alleviates the problem of filter performance degradation when solving high-frequency and low-frequency samples to be filtered simultaneously.
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Smart Images
Figure CN2024140651_25062026_PF_FP_ABST
Abstract
Embodiments of the present application disclose a video encoding method, a video decoding method, an encoder, a decoder, and a storage medium. The decoding method comprises: parsing a bitstream, and determining a parameter set index; on the basis of the parameter set index, determining a filtering parameter, the filtering parameter comprising at least a filter coefficient used by a current coding tree unit; determining a first clipping array of a filter from among one or more clipping arrays; determining, from the first clipping array, a clipping value corresponding to the filter coefficient; and filtering a reconstructed value of the current coding tree unit on the basis of the filter coefficient and the clipping value corresponding to the filter coefficient, so as to obtain a filtered reconstructed value of the current coding tree unit.
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