Patent ID: 11943457
Assignee: SONY GROUP CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 15:
16. An information processing apparatus comprising:
a generation unit configured to generate information indicating a hierarchical structure of positional information about a point cloud representing a three-dimensional object;
an inverse hierarchization unit configured to inversely hierarchize attribute information about the point cloud, to associate a hierarchical structure of the attribute information with the hierarchical structure of the positional information, on a basis of the information generated by the generation unit; and
an inverse quantization unit configured to inversely quantize a difference value between the attribute information and a predicted value of each point of each hierarchical level of a plurality of hierarchical levels, using a quantization weight for each hierarchical level, the difference value having been quantized,
wherein the inverse quantization unit is further configured to inversely quantize the quantized difference value, using the quantization weight for each hierarchical level, the quantization weight for a respective hierarchical level of the plurality of hierarchical levels being set to a value greater than the quantization weight for hierarchical levels of the plurality of hierarchical levels lower than the respective hierarchical level, and
wherein the generation unit, the inverse hierarchization unit, and the inverse quantization unit are each implemented via at least one processor.