Incremental quality delivery and compositing processing

An electronic apparatus comprising:

• one or more hardware circuits configured to:
• encode one or more first spatial objects at one or more first component layers of a composite representation;
• encode a second spatial object at a second component layer over the one or more first component layers of the composite representation, each one of the one or more first spatial object and the second spatial object being encoded independently;
• generate metadata that includes coordinate information indicating a position of the second spatial object and blending information specifying one of a plurality of predetermined blending operations for blending the second spatial object with a bottom layer image derived according to the one or more first spatial objects in the composite representation, wherein the plurality of predetermined blending operations include:
• a normal mode operation corresponding to placing the second spatial object over the bottom layer image without mixing samples of the second spatial object with corresponding samples of the bottom layer image, and
• an addition mode operation corresponding to adding the samples of the second spatial object to the corresponding samples of the bottom layer image;
• and
• assemble the encoded one or more first spatial objects, the encoded second spatial object, and the generated metadata as a data stream for transmission or a data file for storage.

An electronic apparatus comprising:

• one or more hardware circuits configured to:
• receive a data stream or a data file,
• obtain, from the data stream or the data file, one or more first spatial objects at one or more first component layers of a composite representation;
• obtain, from the data stream or the data file, a second spatial object at a second component layer over the one or more first component layers of the composite representation, each one of the one or more first spatial objects and the second spatial object being decoded independently;
• obtain, from the data stream or the data file, metadata that includes coordinate information indicating a position of the second spatial object and blending information specifying one of a plurality of predetermined blending operations for blending the second spatial object with a bottom layer image derived according to the one or more first spatial objects in the composite representation, wherein the plurality of predetermined blending operations include:
• a normal mode operation corresponding to placing the second spatial object over the bottom layer image without mixing samples of the second spatial object with corresponding samples of the bottom layer image, and
• an addition mode operation corresponding to adding the samples of the second spatial object to the corresponding samples of the bottom layer image;
• and
• render the composite representation for output, including performing the operation for blending the second spatial object with the one or more first spatial objects according to the blending information.

A method comprising:

• receiving a data stream or a data file;
• obtaining, from the data stream or the data file, one or more first spatial objects at one or more first component layers of a composite representation;
• obtaining, form the data stream or the data file, a second spatial object at a second component layer over the one or more first component layers of the composite representation, each one of the one or more first spatial objects and the second spatial object being decoded independently;
• obtaining, from the data stream or the data file, metadata that includes coordinate information indicating a position of the second spatial object and blending information specifying one of a plurality of predetermined blending operations for blending the second spatial object with a bottom layer image derived according to the one or more first spatial objects in the composite representation, wherein the plurality of predetermined blending operations include:
• a normal mode operation corresponding to placing the second spatial object over the bottom layer image without mixing samples of the second spatial object with corresponding samples of the bottom layer image, and
• an addition mode operation corresponding to adding the samples of the second spatial object to the corresponding samples of the bottom layer image;
• and
• rendering the composite representation, including performing the operation for blending the second spatial object with the one or more first spatial objects according to the blending information.