Intra prediction based image coding method using mpm list and apparatus therefor

By constructing an MPM list based on intra-frame prediction and optimizing the intra-frame prediction mode using neighbor block information, the problem of efficient compression of high-resolution images and videos is solved, and more efficient image and video transmission and storage are achieved.

CN117221529BActive Publication Date: 2026-07-21LG ELECTRONICS INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LG ELECTRONICS INC
Filing Date
2019-10-08
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies suffer from problems such as large information volume and high transmission and storage costs when transmitting and storing high-resolution, high-quality images and videos, especially immersive media such as virtual reality and holograms, requiring efficient image and video compression technologies.

Method used

By constructing an MPM list based on intra-frame prediction, intra-frame prediction modes are derived using information from neighboring blocks of the current block, prediction samples are generated, and MPM candidates are optimized through 64-modulus arithmetic operations, thereby improving the accuracy and efficiency of intra-frame prediction.

Benefits of technology

It improves image and video compression efficiency, reduces computational complexity, and enhances overall compilation efficiency and prediction performance.

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Abstract

The present disclosure relates to an intra prediction based image coding method using MPM list and apparatus thereof. The image decoding method according to the present document includes the steps of deriving a first intra prediction mode candidate based on a first neighboring block located at a left side of a current block, deriving a second intra prediction mode candidate based on a second neighboring block located at an upper side of the current block, configuring a most probable mode (MPM) list for the current block based on the first intra prediction mode candidate and the second intra prediction mode candidate, deriving an intra prediction mode for the current block based on the MPM list, generating prediction samples by performing prediction on the current block based on the intra prediction mode, and generating a reconstructed picture of the current block based on the prediction samples.
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