Patent ID: 11861868
Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A three-dimensional data decoding device comprising:
a processor; and
memory,
wherein using the memory, the processor:
determines whether a first valid node count is greater than or equal to a first threshold value predetermined, the first valid node count being a total number of valid nodes that are nodes each including a three-dimensional point, the valid nodes being included in first nodes belonging to a layer higher than a layer of a current node in an N-ary tree structure of three-dimensional points included in point cloud data, N being an integer greater than or equal to 2;
when the first valid node count is greater than or equal to the first threshold value, performs first decoding on attribute information of the current node, the first decoding including a prediction process in which second nodes are used, the second nodes including a parent node of the current node and belonging to a same layer as the parent node; and
when the first valid node count is less than the first threshold value, performs second decoding on attribute information of the current node, the second decoding not including the prediction process in which the second nodes are used.