Combined intra-frame and intra-block copy prediction for video encoding and decoding

By combining intra-frame and intra-block copy prediction methods with nested multi-type tree structures and multiple intra-frame prediction modes, the efficiency and quality deficiencies of existing video coding and decoding standards in combining intra-frame and inter-frame prediction are solved, achieving more efficient video coding and decoding results.

CN113924783BActive Publication Date: 2026-05-26DOUYIN VISION CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DOUYIN VISION CO LTD
Filing Date
2020-06-03
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing video codec standards struggle to effectively utilize a combination of intra-frame and inter-frame prediction when processing video blocks, resulting in insufficient codec efficiency and quality.

Method used

A combined intra-frame and intra-frame block copy prediction method is adopted. By dividing the video block into multiple sub-blocks and using a combination of intra-frame block copy mode and other prediction modes for prediction, the prediction accuracy and efficiency are improved by combining nested multi-type tree structures and multiple intra-frame prediction modes.

Benefits of technology

It improves the quality and efficiency of video encoding and decoding, especially in the processing of complex video content, reducing bit rate requirements and improving the quality of reconstructed images.

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Abstract

A combined intra-frame and intra-block copy prediction method for video encoding and decoding is disclosed. A video processing method includes: generating a prediction of a block using a combined method for a conversion between a block of video and a bitstream representation of that block, the combined method using intra-frame block copy (IBC) prediction and intra-frame prediction in a combined manner; and performing a conversion based on the prediction.
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