Prediction encoding method, prediction decoding method, and terminal

By determining the symbol string in the index table based on the encoding information of the block to be encoded, the problem of bit waste in predictive encoding is solved, and more efficient encoding and decoding are achieved.

CN116614623BActive Publication Date: 2026-07-14VIVO MOBILE COMM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VIVO MOBILE COMM CO LTD
Filing Date
2022-02-09
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, the binary symbol string in the index table is determined based on the selection probability of each prediction mode set manually during the predictive coding process, which leads to bit waste and an increase in the storage space occupied by the encoded bit stream.

Method used

By determining the index table based on the encoding information of the block to be encoded, the symbol string is determined based on the selection probability of each prediction mode, which conforms to the actual encoding situation of the block to be encoded, so as to avoid bit waste.

Benefits of technology

It reduces the storage space occupied by the bitstream during the encoding process and improves encoding efficiency.

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Abstract

The application discloses a prediction encoding method, a prediction decoding method and a terminal, and belongs to the technical field of encoding and decoding. The prediction encoding method of the application comprises the following steps: an encoding end obtains encoding information of a to-be-encoded block; the encoding end determines a first index table corresponding to the to-be-encoded block based on the encoding information; the first index table is used for representing a mapping relationship between a prediction mode and a symbol string; and the encoding end performs prediction encoding on the to-be-encoded block according to the first index table.
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