Attribute coding of duplicate points for point cloud coding

A computer system for point cloud coding, the computer system comprising:

• one or more computer-readable non-transitory storage media configured to store computer program code;
• and
• one or more processors configured to access the computer program code and operate as instructed by the computer program code, said computer program code including:
• receiving code configured to cause the one or more processors to receive, from a bitstream, data corresponding to a point cloud;
• first reconstructing code configured to cause the one or more processors to reconstruct, based on the data, a first attribute value of a first duplicate point from among a plurality of duplicate points corresponding to a single geometry position;
• obtaining code configured to cause the one or more processors to obtain at least one prediction residual corresponding to at least one remaining attribute value of at least one remaining duplicate point from among the plurality of duplicate points;
• second reconstructing code configured to cause the one or more processors to reconstruct the at least one remaining attribute value based on the reconstructed first attribute and the at least one prediction residual;
• and
• decoding code configured to cause the one or more processors to decode the data corresponding to the point cloud based on the reconstructed first attribute value and the reconstructed at least one remaining attribute value.

A non-transitory computer readable medium having stored thereon a computer program for point cloud coding, the computer program configured to cause one or more computer processors to:

• receive, from a bitstream, data corresponding to a point cloud;
• reconstruct, based on the data, a first attribute value of a first duplicate point from among a plurality of duplicate points corresponding to a single geometry position;
• obtain at least one prediction residual corresponding to at least one remaining attribute value of at least one remaining duplicate point from among the plurality of duplicate points;
• reconstruct the at least one remaining attribute value based on the reconstructed first attribute and the at least one prediction residual;
• and
• decode the data corresponding to the point cloud based on the reconstructed first attribute value and the reconstructed at least one remaining attribute value.