Methods and apparatuses for encoding, extracting and decoding video using tiles coding scheme

摘要

State-of-the-art video coding schemes supports splitting a picture into smaller rectangular units called tiles units. Each tile units can be independently encoded and decoded by separate encoders and decoders, respectively. The primary purpose of tiles units is to allow parallel processing of the picture to reduce implementation cost and complexity. The present disclosure provides additional functionality to define flexible partitioned tile regions and to allow partial decoding and reconstruction of tile regions.

主权项

1. An encoding method for encoding a picture, the encoding method comprising:
splitting the picture into a plurality of tiles, each of the plurality of tiles being characterized by a width parameter and a height parameter; writing a plurality of parameters into a header of a bitstream, the plurality of parameters specifying a constraint on motion prediction for a current tile that is one of the plurality of tiles; writing the width parameter and the height parameter of each of the plurality of tiles into the header of the bitstream; encoding the current tile independently of remaining plurality of tiles included in the picture, without spatial dependency with the remaining plurality of tiles; and writing the encoded current tile into the bitstream in an order based on a position of the current tile in raster scan order within the picture.