Image encoding method and apparatus, and image decoding method and apparatus
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United States of America Patent
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Jul 19, 2022
Grant Date -
Dec 31, 2020
app pub date -
Sep 10, 2020
filing date -
Feb 6, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit; generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.
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