US 12,143,634 B2
Three-dimensional data encoding method, three-dimensional data decoding method, three-dimensional data encoding device, and three-dimensional data decoding device
Noritaka Iguchi, Osaka (JP); and Toshiyasu Sugio, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Dec. 1, 2021, as Appl. No. 17/539,751.
Application 17/539,751 is a continuation of application No. PCT/JP2020/023205, filed on Jun. 12, 2020.
Claims priority of provisional application 62/861,663, filed on Jun. 14, 2019.
Prior Publication US 2022/0094982 A1, Mar. 24, 2022
Int. Cl. H04N 19/597 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/597 (2014.11) [H04N 19/70 (2014.11)] 16 Claims
OG exemplary drawing
 
1. A three-dimensional data encoding method, comprising:
setting a hierarchical structure for items of geometry information of three-dimensional points included in point cloud data, the hierarchical structure having first layers and second layers, each of the second layers having one or more of the first layers;
encoding the items of geometry information on a per first layer basis to generate items of first encoded data each for a different one of the first layers; and
generating a bitstream including items of second encoded data which are items of encoded data for respective second layers, the items of second encoded data each including one or more items of first encoded data of one or more first layers included in a second layer corresponding to the item of second encoded data,
wherein the bitstream includes an item of second information indicating a total number of first layers included in each of the second layers, and
each of the items of first encoded data includes an occupancy code.