Chroma predictor correction method and apparatus based on cross-component variation
By establishing a correlation model between luminance and chrominance changes and correcting the chrominance predictor, the problem of the unconsidered correlation between luminance and chrominance changes is solved, thus improving the efficiency and quality of video coding.
CN122423219APending Publication Date: 2026-07-17HYUNDAI MOTOR CO LTD +2
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HYUNDAI MOTOR CO LTD
- Filing Date
- 2024-11-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing video coding technologies fail to effectively consider the correlation between luminance and chrominance components when processing luminance and chrominance variations, resulting in inaccurate chrominance predictor correction and affecting video coding efficiency and quality.
Method used
By calculating the correlation between the luminance and chrominance changes between the current block and the reference block, the chrominance predictor is corrected using compensation values, and a model is established between the luminance and chrominance changes.
Benefits of technology
It improves the objective efficiency and subjective quality of video coding, enhances the accuracy of chroma prediction, and improves the overall performance of video coding.
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Figure CN122423219A_ABST
Abstract
本实施方式提供了一种基于跨分量变化的色度预测器校正的方法和设备。在本实施方式中，视频解码设备基于当前色度块的对应亮度区域获得当前块的块矢量。其中，当前块包括当前亮度块和当前色度块。视频解码设备将由块矢量指示的区域配置为参考块，并将参考色度块配置为当前色度块的色度预测器。其中，参考块包括参考亮度块和参考色度块。视频解码设备估计表示当前块的模板和参考块的模板之间的亮度变化量和色度变化量之间的相关性的参数。视频解码设备基于估计的参数计算补偿值，并基于补偿值校正色度预测器。
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