Partial decoding and reconstruction of a video-based point cloud compression bitstream

A decoding device for point cloud decoding, the decoding device comprising:

• a communication interface configured to receive a bitstream;
• and
• a processor operably coupled to the communication interface, the processor configured to:
• identify, from the bitstream, messages and one or more sub-bitstreams representing a three-dimensional (3D) point cloud, wherein a sub-bitstream of the one or more sub-bitstreams includes independently encoded tiles,
• identify a query label indicating an object of the 3D point cloud for decoding,
• in response to determining that the query label corresponds to a label included in the messages, identify a 3D scene object associated with the query label based on the label,
• identify a 2D tile that correspond to the 3D scene object, wherein the 2D tile is one of the independently encoded tiles, and
• determine to decode, based on an identification of the 2D tile from the sub-bitstream, a portion of the sub-bitstream corresponding to the 2D tile to generate a portion of a video frame representing a portion of the 3D scene object.