Methods for transmitting and rendering a 3D scene, method for generating patches, and corresponding devices and computer programs

A method for generating a 3D scene at a server, the method comprising:

• transmitting a manifest, wherein the manifest includes;
• a reference to at least one first data stream, the at least one first data stream comprising a central patch content of the 3D scene, the central patch content comprising parts of the scene visible from a central viewpoint;
• a reference to a plurality of second data streams, the plurality of second data streams comprising parallax patch content of the 3D scene, wherein the parallax patch content comprises parts of the 3D scene visible from a secondary non-central viewpoint;
• and
• an association of each of the second data streams to a range of depths;
• receiving a request for at least one available first data stream;
• receiving a request for a subset of available second data streams selected based at least on a range of depths associated with the at least one available second data stream;
• and
• transmitting the at least one available first data stream and subset of available second data streams to enable rendering of a 3D scene.

A terminal comprising:

• a receiver;
• a transmitter;
• and
• a processor;
• wherein the receiver is configured to receive a manifest, wherein the manifest includes:
• a reference to at least one first data stream available from a server, the at least one first data stream comprising a central patch content of a 3D scene, the central patch content comprising parts of the 3D scene visible from a central viewpoint;
• a reference to a plurality of second data streams available from the server, the plurality of second data streams comprising parallax patch content of the 3D scene, wherein the parallax patch content comprises parts of the 3D scene visible from a secondary non-central viewpoint;
• and
• an association of each of the second data streams to a range of depths;
• wherein the transmitter is configured to request, from the server, at least one available first data stream;
• wherein the transmitter is further configured to request, from the server, a subset of available second data streams selected based at least on a range of depths associated with the at least one available second data stream;
• and
• wherein the processor is configured to render the 3D scene using the central patch content from the requested first data streams and parallax patch content from the requested selected subset of available second data streams.