US 11,657,542 B2
Techniques and apparatus for alphabet-partition coding of transform coefficients for point cloud compression
Sehoon Yea, Palo Alto, CA (US); Stephan Wenger, Palo Alto, CA (US); and Shan Liu, Palo Alto, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed on Nov. 29, 2022, as Appl. No. 18/71,315.
Application 18/071,315 is a continuation of application No. 17/585,826, filed on Jan. 27, 2022, granted, now 11,544,819.
Application 17/585,826 is a continuation of application No. 17/110,691, filed on Dec. 3, 2020, granted, now 11,373,276, issued on Jun. 28, 2022.
Claims priority of provisional application 62/958,846, filed on Jan. 9, 2020.
Claims priority of provisional application 62/958,839, filed on Jan. 9, 2020.
Prior Publication US 2023/0090878 A1, Mar. 23, 2023
Int. Cl. G06T 3/40 (2006.01); G06T 9/40 (2006.01); G06T 17/00 (2006.01); G06F 18/21 (2023.01)
CPC G06T 3/4084 (2013.01) [G06F 18/2163 (2023.01); G06T 9/40 (2013.01); G06T 17/00 (2013.01); G06T 2210/56 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of point cloud coefficient decoding, the method being performed by at least one processor, comprising:
partitioning transform coefficients associated with compressed point cloud data into one or more sets;
determining set-index values of the partitioned transform coefficients, wherein the determining comprises determining the set-index values from an aggregated super-symbol;
determining symbol-index values of the partitioned transform coefficients; and
generating decompressed point cloud data based on the set-index values and the symbol-index values.