FIELD: video encoding.
SUBSTANCE: invention is related specifically to mechanisms for dividing images into groups of tiles to support increased compression in video encoding. According to the invention, a video encoding method includes dividing an image into a plurality of tiles, wherein a number of tiles are included in a tile group. A flag is encoded into a set of bitstream parameters. The flag is set to the first value when the tile group is a raster tile group, and to the second value when the tile group is a rectangular tile group. Tiles are encoded into a bitstream based on a group of tiles. The bit stream is stored for interaction with the decoder.
EFFECT: increase of coding efficiency, reduction of the amount of memory and processing resources used when encoding and decoding images.
20 cl, 11 dwg
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