US 12,307,726 B2
Point cloud data transmission device, point cloud data transmission method, point cloud data reception device, and point cloud data reception method, where the octree includes a direct node having a single position of one point
Hyunmook Oh, Seoul (KR); and Sejin Oh, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 18/008,347
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jun. 18, 2021, PCT No. PCT/KR2021/007649
§ 371(c)(1), (2) Date Dec. 5, 2022,
PCT Pub. No. WO2021/256885, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 10-2020-0074005 (KR), filed on Jun. 18, 2020.
Prior Publication US 2023/0281878 A1, Sep. 7, 2023
Int. Cl. H04N 19/119 (2014.01); G06T 9/00 (2006.01); G06T 9/40 (2006.01); H04N 19/30 (2014.01); H04N 19/597 (2014.01); H04N 19/70 (2014.01); H04N 19/96 (2014.01)
CPC G06T 9/001 (2013.01) [G06T 9/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of transmitting point cloud data, the method comprising:
encoding geometry data of point cloud data based on an octree,
wherein the octree represents points of the geometry data as a tree including nodes,
wherein the octree includes a direct node having a single position of one point;
encoding attribute data of the point cloud data based on levels of detail (LODs) including levels including the points; and
transmitting a bitstream containing the point cloud data,
wherein the direct node is encoded without subsequent points for the direct node,
wherein the direct node is added in the LODs with occupied nodes of the octree.