US 12,149,751 B2
Transform-based image coding method and apparatus therefor
Hyejung Hur, Seoul (KR); and Sejin Oh, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/793,140
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Dec. 15, 2020, PCT No. PCT/KR2020/018325
§ 371(c)(1), (2) Date Jul. 15, 2022,
PCT Pub. No. WO2021/145573, PCT Pub. Date Jul. 22, 2021.
Claims priority of provisional application 62/962,139, filed on Jan. 16, 2020.
Prior Publication US 2023/0059625 A1, Feb. 23, 2023
Int. Cl. H04N 19/96 (2014.01); G06T 9/40 (2006.01); H04N 19/91 (2014.01)
CPC H04N 19/96 (2014.11) [G06T 9/40 (2013.01); H04N 19/91 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of transmitting point cloud data by an apparatus, the method comprising:
encoding a geometry representing a position of one or more points of the point cloud data;
encoding an attribute of the one or more points of the point cloud data; and
transmitting a bitstream including the geometry and the attribute,
wherein the encoding the attribute includes generating level of details of the one or more points, wherein the one or more points are sorted based on Morton codes,
wherein the encoding the attribute further includes generating neighbor points for the one or more points,
wherein a position of a point in a level of the level of details is shifted.