FIELD: data coding.
SUBSTANCE: method for restoring a point cloud from an encoded point cloud stream is to obtain the encoded busy codes for nodes in an octree structure for the point cloud from an encoded bit stream for a point cloud. The nodes in the octree structure correspond to three-dimensional sections of point cloud space. The node sizes are associated with the sizes of the corresponding 3D partitions. The busy codes for nodes are decoded from the encoded busy codes. At least a first busy code for a child node of the first node is decoded without waiting for decoding of a second busy code for a second node having the same node size as the first node. The octree structure is restored based on the decoded busy codes for the nodes, and the point cloud is restored based on the octree structure.
EFFECT: increase in the efficiency of encoded point cloud recovery.
18 cl, 18 dwg
