Decoding device, encoding device, storage medium, and device for transmitting image data

By combining the low-frequency non-separable transform of the wide-angle intra-frame prediction mode, the modified intra-frame prediction mode is determined and the inverse non-separable transform matrix is ​​selected. This solves the problem of processing efficiency for high spatial resolution video signals, improves prediction accuracy, and reduces the complexity of the transform matrix.

CN116546199BActive Publication Date: 2026-05-26LG ELECTRONICS INC
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LG ELECTRONICS INC
Filing Date
2019-08-12
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies struggle to effectively process video signals with high spatial resolution, high frame rates, and high-dimensional scene representation, leading to a dramatic increase in memory storage and processing capabilities. This necessitates an efficient transformation technique to support higher-precision prediction modes.

Method used

By combining the low-frequency inseparable transform of the wide-angle intra-prediction mode, the modified intra-prediction mode of the current block is determined, and the corresponding inverse inseparable transform matrix is ​​selected and applied to image signal processing.

Benefits of technology

It improves prediction accuracy, reduces the design complexity of the transformation matrix, and achieves more efficient image signal processing.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116546199B_ABST
    Figure CN116546199B_ABST
Patent Text Reader

Abstract

A decoding apparatus, an encoding apparatus, a storage medium, and an apparatus for transmitting image data. A method for decoding an image signal according to an embodiment of the present invention includes the following steps: for a current block whose width and height are different from each other, determining a modified intra-prediction mode based on the ratio between the width and height of the current block and an intra-prediction mode; determining an inverse inseparable transform set based on the modified intra-prediction mode; and applying an inverse inseparable transform matrix selected from the inverse inseparable transform set relative to the upper left region determined according to the width and height of the current block.
Need to check novelty before this filing date? Find Prior Art