Coding format for optimized encoding of volumetric video

A device for encoding a volumetric scene and comprising a memory associated with a processor configured for:

• obtaining a list of atlas tiles, an atlas tile packing patches clustered according to a criterion based on similarity and continuity;
• generating metadata comprising:
• an indication on whether the volumetric scene is formatted as a list of atlas tiles;
• information indicating a number of atlas tiles in the list of atlas tiles;
• and
• for each atlas tile of the list:
• a size;
• and
• a location within the atlas tile for each patch packed in the atlas tile;
• and
• encoding the list of atlas tiles and generated metadata in a data stream.

A method for decoding a volumetric scene from a data stream;

• the method comprising:
• decoding metadata from the data stream, the metadata comprising:
• an indication whether the volumetric scene is formatted as a list of atlas tiles;
• information indicating a number of atlas tiles in the list of atlas tiles;
• and
• for each atlas tile of the list:
• a size;
• and
• a location within the atlas tile for each patch packed in the atlas tile;
• and
• decoding the list of atlas tiles from the data stream according to the metadata.

A device for decoding a volumetric scene from a data stream and comprising a memory associated with a processor configured for:

• decoding metadata from the data stream, the metadata comprising:
• an indication whether the volumetric scene is formatted as a list of atlas tiles;
• information indicating a number of atlas tiles in the list of atlas tiles;
• and
• for each atlas tile of the list:
• a size;
• and
• a location within the atlas tile for each patch packed in the atlas tile;
• and
• decoding the list of atlas tiles from the data stream according to the metadata.

A non-transitory readable medium carrying data representative of a volumetric scene and comprising:

• metadata comprising:
• an indication whether the volumetric scene is formatted as a list of atlas tiles;
• a number of atlas tiles in the list of atlas tiles;
• and
• for each atlas tile of the list:
• a size;
• a location within the atlas tile for each patch packed in the atlas tile;
• and
• the list of atlas tiles.