Video coding method and device, video decoding method and device, computer-readable medium, and electronic device

By adjusting the filter coefficients using a compensation value, the method addresses the decreased prediction effect in EIP mode, enhancing intra-prediction accuracy and coding/decoding efficiency in video processing.

KR1020260113281APending Publication Date: 2026-07-21TENCENT TECHNOLOGY (SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
KR · KR
Patent Type
Applications
Current Assignee / Owner
TENCENT TECHNOLOGY (SHENZHEN) CO LTD
Filing Date
2025-08-08
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The accuracy of intra-prediction and coding/decoding efficiency are compromised in extrapolation filter-based intra prediction (EIP) mode due to the decrease in prediction effect as pixels within the current block move further away from the reference region, affecting the filter coefficients.

Method used

Adjusting the filter coefficients of the reference region corresponding to the current block using a compensation value to optimize the filter coefficients, thereby improving the accuracy of intra-prediction and enhancing video coding and decoding efficiency.

Benefits of technology

The proposed method improves the accuracy of intra-prediction and enhances the efficiency of video coding and decoding by optimizing the filter coefficients in the extrapolation filter-based intra prediction mode.

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Abstract

Embodiments of the present application provide a video coding method and apparatus, a video decoding method and apparatus, a computer-readable medium, and an electronic device. A video decoding method comprises: acquiring a coded video code stream; acquiring filter coefficients of a current block—filter coefficients used for an extrapolation filter-based intra-prediction mode—; decoding a compensation value for the filter coefficients from the video code stream; generating an adjusted filter coefficient based on the compensation value and the filter coefficients; and predicting the current block using the adjusted filter coefficients. The technical solutions of the embodiments of the present application can improve the accuracy of intra-prediction and video coding and decoding efficiency by optimizing the filter coefficients of the current blocks.
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