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

Claim 6:
7. An information processing method comprising:
performing hierarchization of attribute information about a point cloud representing a three-dimensional object by recursively repeating, on a reference point, a process of classifying points of the point cloud into a prediction point that is a point at which a difference value between the attribute information and a predicted value is left, and the reference point that is a point at which the attribute information is referred to during derivation of the predicted value;
selecting, during the hierarchization, the prediction point in such a manner that a point also exists in a voxel of a hierarchical level one level higher than a hierarchical level to which voxels containing points of a current hierarchical level belong;
quantizing the difference value of each point of each hierarchical level of a plurality of hierarchical levels, using a quantization weight for each hierarchical level; and
quantizing the 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.