US 12,328,448 B2
Residual coding for geometry point cloud compression
Adarsh Krishnan Ramasubramonian, Irvine, CA (US); Luong Pham Van, San Diego, CA (US); Bappaditya Ray, San Diego, CA (US); Louis Joseph Kerofsky, San Diego, CA (US); Geert Van der Auwera, 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 May 24, 2024, as Appl. No. 18/674,330.
Application 18/674,330 is a continuation of application No. 17/657,867, filed on Apr. 4, 2022, granted, now 12,003,768.
Claims priority of provisional application 63/170,999, filed on Apr. 5, 2021.
Prior Publication US 2024/0314358 A1, Sep. 19, 2024
Int. Cl. H04N 19/597 (2014.01); H04N 19/105 (2014.01); H04N 19/124 (2014.01); H04N 19/136 (2014.01); H04N 19/156 (2014.01); H04N 19/184 (2014.01); H04N 19/30 (2014.01)
CPC H04N 19/597 (2014.11) [H04N 19/105 (2014.11); H04N 19/124 (2014.11); H04N 19/136 (2014.11); H04N 19/156 (2014.11); H04N 19/184 (2014.11); H04N 19/30 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of decoding point cloud data, the method comprising:
obtaining a bitstream that is encoded to comply with one or more constraints; and
decoding the bitstream, wherein decoding the bitstream comprises:
determining, based on data signaled in the bitstream, a residual value of a first component of an attribute of a point of the point cloud data;
generating a predicted value of a second component of the attribute of the point; and
determining, based on the data signaled in the bitstream, a delta scaling value for the predicted value of the second component of the attribute, wherein the one or more constraints limit the delta scaling value to be in a range of a first value to a second value, inclusive; and
determining a scale factor based on a predicted coefficient and the delta scaling value;
reconstructing the second component of the attribute based on a sum of the predicted value of the second component of the attribute and a multiplication product of the scale factor and the residual value for the first component.