Method and apparatus for video coding using adaptive tile sizes

A device for encoding video data, comprising:

• a memory unit having a database, the database having a plurality of tile size partitions, each tile size partition of the plurality of tile size partitions being associated with a corresponding picture parameter set identifier (PPSID);
• and
• at least one processor configured to:
• determine a tile size partition for a frame of video data,
• compare the tile size partition for the frame of video data with the plurality of tile size partitions stored in the database to determine whether the tile size partition for the frame of video data is equivalent to one of the plurality of tile size partitions,
• in response to determining that the tile size partition for the frame of video data is not equivalent to any one of the plurality of tile size partitions stored in the database:
• signal a picture parameter set (PPS) including the tile size partition for the frame of video data, and
• store the tile size partition for the frame of video data in the database, and
• in response to determining that the tile size partition for the frame of video data is equivalent to one of the plurality of tile size partitions stored in the database:
• retrieve the corresponding PPSID associated with the one of the plurality of tile size partitions stored in the database that is equivalent to the tile size partition for the frame of video data, and
• signal the corresponding PPSID in a slice header.

An apparatus for encoding video data, comprising:

• a storage means configured to store a plurality of tile size partitions, each tile size partition of the plurality of tile size partitions being associated with a corresponding picture parameter set identifier (PPSID);
• a determining means configured to determine a tile size partition for a frame of video data;
• a signaling means configured to transmit a picture parameter set (PPS);
• a comparing means configured to compare the tile size partition for the frame of video data with the plurality of tile size partitions stored by the storage means to determine whether the tile size partition for the frame of video data is equivalent to one of the plurality of tile size partitions;
• in response to the determining means determining that the tile size partition for the frame of video data is not equivalent to any one of the plurality of tile size partitions stored by the storage means:
• the signaling means is further configured to signal a PPS including the tile size partition for the frame of video data;
• and
• the storage means is further configured to store the tile size partition for the frame of video data;
• and
• in response to the determining means determining that the tile size partition for the frame of video data is equivalent to one of the plurality of tile size partitions stored by the storage means:
• the comparing means is further configured to retrieve the corresponding PPSID associated with the one of the plurality of tile size partitions stored by the storage means that is equivalent to the tile size partition for the frame of video data;
• and
• the signaling means is further configured to signal the corresponding PPSID in a slice header.

A method of encoding video data, comprising:

• selecting a first size partition based on a computation complexity of a first frame of video data;
• signaling in syntax information a picture parameter set (PPS) indicating the first tile size partition for the frame of video data;
• storing the first tile size partition in a database, the database configured to store a plurality of tile size partitions, each tile size partition of the plurality of tile size partitions being associated with a corresponding PPS identifier (PSSID);
• determining a second tile size partition for a second frame of video data;
• and
• in response to determining that the second tile size partition is the same as the first tile size partition:
• retrieving the first tile size partition from the database;
• and
• signaling the PPSID associated with the first tile size partition in a slice header;
• in response to determining that the second tile size partition differs from the plurality of tile size partitions stored in the database:
• signaling in syntax information a second PPS indicating the second tile size partition for the second frame of video data;
• and
• storing the second tile size partition in the database.