US 11,924,428 B2
Scale factor for quantization parameter values in geometry-based point cloud compression
Adarsh Krishnan Ramasubramonian, Irvine, CA (US); Louis Joseph Kerofsky, San Diego, CA (US); Bappaditya Ray, San Diego, CA (US); Geert Van der Auwera, Del Mar, 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. 23, 2021, as Appl. No. 17/355,904.
Claims priority of provisional application 63/043,666, filed on Jun. 24, 2020.
Prior Publication US 2021/0409714 A1, Dec. 30, 2021
Int. Cl. H04N 19/124 (2014.01); H04N 19/187 (2014.01); H04N 19/20 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/124 (2014.11) [H04N 19/187 (2014.11); H04N 19/20 (2014.11); H04N 19/70 (2014.11)] 36 Claims
OG exemplary drawing
 
1. An apparatus configured to encode a point cloud, the apparatus comprising:
a memory configured to store the point cloud; and
one or more processors implemented in circuitry and in communication with the memory, the one or more processors configured to:
determine a quantization parameter (QP) value based on a parameter value k, wherein the parameter value k specifies a number of QP points per doubling of a scaling step size to be used at a decoder;
encode the point, cloud using the QP value;
encode one or more syntax elements that indicate the QP value; and
encode a syntax element that indicates the parameter value k, wherein the parameter value k is an integer that ranges from 0 to a maximum parameter value K, wherein the maximum parameter value K indicates a maximum precision of the QP value.