FIELD: physics.
SUBSTANCE: invention relates to image encoding and decoding. Disclosed is a method which involves parsing a bit stream to obtain a flag from the header of the picture of the bit stream, wherein the flag indicates whether the current picture is an I-picture. When the flag indicates that the current picture is an I-picture, the syntax element intended for external prediction is logically output as a default value; or, when the flag indicates that the current picture is a P or B picture, obtaining a syntax element intended for external prediction from the picture header.
EFFECT: high efficiency of encoding and decoding.
21 cl, 19 dwg
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