| 摘要 |
FIELD: physics.SUBSTANCE: method comprises obtaining an intraframe prediction mode of a current intraframe encoding unit from a predefined set of prediction modes; obtaining reference prediction modes of the current intraframe encoding unit, wherein the reference prediction modes are intraframe prediction modes of available adjacent units relative to the current intraframe encoding unit or prediction modes in a preset reserved set of reference modes; recording a first flag bit into a code stream according to the reference prediction modes and the intraframe prediction mode; obtaining prediction mode encoding values according to the size relationship between the intraframe prediction mode value and reference prediction mode values and encoding the prediction mode encoding values. Use of the encoding method disclosed herein can provide saving on determination logic at the encoding side, thereby improving encoding efficiency.EFFECT: high encoding and decoding efficiency.28 cl, 5 dwg, 1 tbl |
