US 12,192,311 B2
Attribute residual coding in G-PCC
Bappaditya Ray, San Diego, CA (US); Geert Van der Auwera, Del Mar, CA (US); Adarsh Krishnan Ramasubramonian, Irvine, CA (US); Louis Joseph Kerofsky, 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 Jun. 8, 2021, as Appl. No. 17/342,249.
Claims priority of provisional application 63/153,187, filed on Feb. 24, 2021.
Claims priority of provisional application 63/036,878, filed on Jun. 9, 2020.
Prior Publication US 2021/0385303 A1, Dec. 9, 2021
Int. Cl. G06T 9/00 (2006.01); H04L 47/12 (2022.01); H04L 65/70 (2022.01); H04L 69/04 (2022.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01)
CPC H04L 69/04 (2013.01) [H04L 47/12 (2013.01); H04L 65/70 (2022.05)] 50 Claims
OG exemplary drawing
 
1. A method of encoding a point cloud, the method comprising:
determining respective residual values for each component of a plurality of components of one attribute of one point in the point cloud, wherein each respective residual value is based on a difference between a respective value of each component and a respective predictor for each component;
in a condition where the residual values for all components of the plurality of components of the one attribute of the one point in the point cloud except one component of the plurality of components of the one attribute are equal to zero, determining a value for the one component that is equal to a magnitude of a residual value of the one component of the one attribute minus an offset;
encoding the value of the one component; and
signaling the encoded value in a bitstream.