使用二次变换的视频信号处理方法及装置
By introducing a quadratic transform technique into video signal processing, particularly the low-frequency non-separable transform (LFNST) and the upper-right diagonal scanning sequence, the problem of insufficient coding efficiency in existing video signal processing is solved, and more efficient video signal coding is achieved.
CN115967811BActive Publication Date: 2026-07-17SAMSUNG ELECTRONICS CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SAMSUNG ELECTRONICS CO LTD
- Filing Date
- 2020-06-25
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing video signal processing methods are inefficient in terms of coding efficiency, and more efficient video signal processing methods and devices are needed.
Method used
The video signal is processed using a two-stage transformation technique, which involves low-frequency non-separable transformation (LFNST). This includes vertical and horizontal transformation of the transform blocks, and the application of a right-top diagonal scanning sequence under specific conditions to improve coding efficiency.
Benefits of technology
It improves the encoding efficiency of video signals, optimizes the encoding process under specific conditions through secondary transformation technology, and enhances the processing capability of the encoding device.
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Abstract
本公开涉及使用二次变换的视频信号处理方法及装置。一种视频信号解码装置，包括处理器，其中，该处理器被配置成：当满足一个或多个预设条件时，从视频信号的比特流中解析与编译单元的二次变换有关的语法元素；基于解析的语法元素，检查是否二次变换被应用于编译单元中包括的变换块；当二次变换被应用于变换块时，通过基于作为构成变换块的一个或多个子块之一的第一子块的一个或多个系数执行逆二次变换来获得用于第一子块的一个或多个逆变换系数；以及通过基于一个或多个逆变换系数执行逆初次变换来获得变换块的残差样本。
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