Planar and direct mode signaling in G-PCC

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

• parsing from a bitstream at least one of:
• a first syntax element indicating that planar mode is disabled for a current node when angular mode is enabled;
• or
• a second syntax element indicating that the angular mode is enabled for the current node;
• bypassing parsing of values for a planar mode for the current node in response to the first syntax element indicating that the planar mode is disabled for the current node when the angular mode is enabled, or in response to the second syntax element indicating that the angular mode is enabled for the current node;
• and
• decoding the current node in a mode other than the planar mode.

A device for encoding point cloud data, the device comprising:

• memory configured to store the point cloud data;
• and
• processing circuitry coupled to the memory and configured to:
• signal at least one of:
• a first syntax element indicating that planar mode is disabled for a current node when angular mode is enabled;
• or
• a second syntax element indicating that the angular mode is enabled for the current node;
• bypass signaling of values for a planar mode for the current node in a condition where the first syntax element indicates that the planar mode is disabled for the current node when the angular mode is enabled, or in a condition where the second syntax element indicates that the angular mode is enabled for the current node;
• and
• encode the current node in a mode other than the planar mode.

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

• memory configured to store the point cloud data;
• and
• processing circuitry coupled to the memory and configured to:
• parse from a bitstream at least one of:
• a first syntax element indicating that planar mode is disabled for a current node when angular mode is enabled;
• or
• a second syntax element indicating that the angular mode is enabled for the current node;
• bypass parsing of values for a planar mode for the current node in response to the first syntax element indicating that the planar mode is disabled for the current node when the angular mode is enabled, or in response to the second syntax element indicating that the angular mode is enabled for the current node;
• and
• decode the current node in a mode other than the planar mode.