US 12,423,877 B2
Point cloud data transmission device, point cloud data transmission method, point cloud data reception device, and point cloud data reception method
Sooyeon Lee, Seoul (KR); Hyunmook Oh, Seoul (KR); Hyejung Hur, Seoul (KR); and Yousun Park, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 18/287,839
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Apr. 20, 2022, PCT No. PCT/KR2022/005668
§ 371(c)(1), (2) Date Oct. 20, 2023,
PCT Pub. No. WO2022/225333, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 10-2021-0051458 (KR), filed on Apr. 21, 2021.
Prior Publication US 2024/0185467 A1, Jun. 6, 2024
Int. Cl. G06T 9/00 (2006.01)
CPC G06T 9/001 (2013.01) 13 Claims
OG exemplary drawing
 
1. A method of transmitting point cloud data, the method comprising:
encoding geometry data containing positions of points of the point cloud data;
encoding attribute data containing attribute values of the points of the point cloud data based on the geometry data; and
transmitting the encoded geometry data, the encoded attribute data, and signaling information,
wherein the encoding of the geometry data comprises compressing the geometry data by performing motion estimation based on points selected in a search window of a reference frame and points selected in a prediction unit to be encoded of a current frame,
wherein the signaling information includes geometry compression related information, and
wherein the geometry compression related information includes at least motion vector information or information for point selection.