Point cloud data transmission device, point cloud data transmission method, point cloud data reception device, and point cloud data reception method

A device for transmitting point cloud data, comprising:

• a geometry encoder configured to encode geometry data of the point cloud data;
• an attribute encoder configured to encode attribute data of the point cloud data based on the geometry data;
• and
• a transmitter configured to transmit the encoded geometry data, the encoded attribute data, and signaling data,
• wherein the geometry encoder partitions the geometry data into one or more prediction units based on block size information,
• wherein the signaling data comprises the block size information.

A method of receiving point cloud data, the method comprising:

• receiving geometry data, attribute data, and signaling data;
• decoding the geometry data based on the signaling data;
• decoding the attribute data based on the signaling data and the decoded geometry data;
• and
• rendering point cloud data reconstructed based on the decoded geometry data and the decoded attribute data,
• wherein the decoding of the geometry data comprises:
• partitioning reference data of the geometry data into one or more prediction units based on block size information,
• wherein the signaling data comprises the block size information.