US 12,445,645 B2
Inter prediction coding for geometry point cloud compression
Adarsh Krishnan Ramasubramonian, Irvine, CA (US); Geert Van der Auwera, San Diego, CA (US); Luong Pham Van, San Diego, CA (US); and Marta Karczewicz, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Apr. 19, 2023, as Appl. No. 18/303,390.
Claims priority of provisional application 63/363,552, filed on Apr. 25, 2022.
Claims priority of provisional application 63/363,306, filed on Apr. 20, 2022.
Prior Publication US 2023/0345045 A1, Oct. 26, 2023
Int. Cl. H04N 19/597 (2014.01); G06T 19/00 (2011.01)
CPC H04N 19/597 (2014.11) [G06T 19/006 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A device for processing point cloud data, the device comprising:
a memory configured to store the point cloud data; and
one or more processors, implemented in circuitry, and configured to, responsive to a determination to predict a current point in a current frame using an inter prediction mode:
identify a reference frame;
derive one or more motion compensated reference points from the reference frame;
selectively resample points in the reference frame based on the one or more motion compensated reference points to generate a resampled reference frame wherein the selectively resample points in the reference frame includes:
select a particular point in the reference frame;
determine whether or not to resample the particular point;
responsive to a determination to resample the particular point:
determine a first set of points in the reference frame that are associated with the particular point, wherein the first set of points includes at least one of the one or more motion compensated reference points;
derive, based on the first set of points, a derived radius value; and
update, based on the derived radius value, a radius value of the particular point; and
inter predict the current point in the current frame based on the resampled reference frame.