Patent ID: 11935270
Assignee: QUALCOMM INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 33:
34. A computer-readable storage medium storing instructions that, when executed, cause one or more processors of a point cloud encoding device to:
select, from a plurality of predefined prediction modes, a prediction mode for performing predictive geometry coding of a position of a current predictive tree node of the point cloud, wherein the plurality of prediction modes includes at least: a zero prediction mode, and a delta prediction mode;
determine a radius of a parent node of the current predictive tree node, an azimuth of the parent node of the current predictive tree node, and a laser index of the parent node of the current predictive tree node; and
where the selected prediction mode is zero prediction mode:
infer an azimuth and a laser index of a predicted position of the current predictive tree node as the azimuth and the laser index of the parent node;
infer a radius of the predicted position to be a minimum radius value, wherein the minimum radius value is different than the radius of the parent node; and
determine, based on the predicted position of the current predictive tree node, the position of the current predictive tree node.