US 12,423,871 B2
Point cloud data transmission device, point cloud data transmission method, point cloud data reception device, and point cloud data reception method
Hyejung Hur, Seoul (KR); and Sejin Oh, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 18/020,828
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Aug. 31, 2021, PCT No. PCT/KR2021/011635
§ 371(c)(1), (2) Date Feb. 10, 2023,
PCT Pub. No. WO2022/050650, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 10-2020-0112146 (KR), filed on Sep. 3, 2020.
Prior Publication US 2023/0290006 A1, Sep. 14, 2023
Int. Cl. H04N 7/12 (2006.01); G06T 9/00 (2006.01); H04N 19/513 (2014.01); H04N 19/573 (2014.01); H04N 19/577 (2014.01); H04N 19/96 (2014.01)
CPC G06T 9/00 (2013.01) [H04N 19/521 (2014.11); H04N 19/573 (2014.11); H04N 19/577 (2014.11); H04N 19/96 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of encoding point cloud data, the method comprising:
encoding geometry data of point cloud data based on an inter-prediction,
wherein the geometry data is encoded based on a reference frame for the inter-prediction,
wherein the reference frame is generated based on global motion information,
wherein a value related to the geometry data is applied to a point in the reference frame;
encoding attribute data of the point cloud data; and
transmitting a bitstream containing the point cloud data,
wherein the bitstream includes parameter information related to a value for the inter-prediction,
wherein the encoding the geometry data includes:
generating an error correction value based on a difference in occupied bits between a first octree node of a current frame and a second octree node of the reference frame, and generating the predicted point based on the error correction value.