FIELD: information technology.
SUBSTANCE: moving image encoding device has a unit for dividing an image into macroblock images of two or more blocks and dividing each of the macroblock images into a block image of one or more blocks in accordance with an encoding mode; and an intra-prediction unit for the block image; a motion-compensated prediction unit for carrying out an image motion-compensated prediction for a block; a transformation and quantisation unit for a prediction difference signal which is generated by subtracting the prediction image from the block image to generate compressed data; a variable length encoding unit for entropy-encoding said compressed data to multiplex said compressed data into a bitstream; and an encoding control unit for selecting a certain transformation block size from a set of transformation block sizes to report said transformation block size to said transformation/quantisation unit, wherein said transformation/quantisation unit divides said prediction difference signal into blocks having said transformation block size and carries out a transformation and quantisation process for each of the blocks to generate compressed data.
EFFECT: high encoding efficiency.
7 cl, 16 dwg
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Authors
Dates
2014-07-20—Published
2011-03-31—Filed