Image encoding device and image decoding device using triangular prediction mode, and image encoding method and image decoding method performed by same

By adopting the triangle prediction mode in image encoding and decoding, the information redundancy problem caused by improper prediction mode setting in the prior art is solved, and more efficient image encoding and decoding processing is achieved.

CN119402648APending Publication Date: 2025-02-07SAMSUNG ELECTRONICS CO LTD
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Patent Information

Application Number
CN202411848782.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2018-12-21
Filing Date
2019-12-20
Publication Date
2025-02-07

AI Technical Summary

Technical Problem

In the existing image encoding and decoding methods, effective prediction mode settings are lacking, resulting in unnecessary information being included in the bitstream, and the encoding and decoding processes are complex.

Method used

By encoding and decoding the image using the triangle prediction mode, the specific steps include obtaining information related to the triangle prediction mode from the bitstream, dividing the current block into two triangle partitions, generating a merged list for the triangle prediction mode, and based on the selected The motion vector obtains the predicted block from the reference image to reconstruct the current block.

Benefits of technology

The prediction mode is effectively limited, unnecessary information is avoided to be included in the bitstream, and the encoding and decoding processing of the image is simplified.

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Abstract

Disclosed in one embodiment is an image decoding method comprising the steps of: acquiring information related to a triangular prediction mode for a current block from a bitstream; dividing the current block into two triangular partitions according to the information related to the triangular prediction mode; constructing a merge list for the triangular prediction mode according to a merge list construction method in a conventional merge mode; selecting a motion vector for the two triangular partitions according to information indicating a motion vector among the motion vectors included in the merge list; obtaining prediction blocks corresponding to the two triangular partitions from a reference image based on the motion vector; and reconstructing the current block based on the final prediction block.
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