US 12,125,250 B2
Decoding of patch temporal alignment for mesh compression
Jun Tian, Belle Mead, NJ (US); Xiang Zhang, Sunnyvale, CA (US); Xiaozhong Xu, State College, PA (US); Chao Huang, Palo Alto, CA (US); and Shan Liu, San Jose, CA (US)
Assigned to Tencent America LLC, Palo Alto, CA (US)
Filed by Tencent America LLC, Palo Alto, CA (US)
Filed on Sep. 28, 2022, as Appl. No. 17/954,961.
Claims priority of provisional application 63/264,417, filed on Nov. 22, 2021.
Prior Publication US 2023/0162404 A1, May 25, 2023
Int. Cl. G06T 9/00 (2006.01); G06T 15/04 (2011.01); G06T 17/20 (2006.01)
CPC G06T 9/001 (2013.01) [G06T 15/04 (2013.01); G06T 17/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for mesh decompression, comprising;
decoding a texture map in two dimension (2D) from a bitstream carrying a three dimensional (3D) mesh frame, the 3D mesh frame representing a surface of an object with polygons and been partitioned into patches, the texture map comprising transformed patches with transformed UV coordinates that are transformed from original UV coordinates of the patches according to remap transform parameters, the remap transform parameters indicating transformation operations that have been performed to generate the transformed patches;
decoding the remap transform parameters associated with the patches from the bitstream;
generating a recovered texture map from the texture map according to the remap transform parameters, at least a first recovered pixel in the recovered texture map being assigned with a texture value at a first transformed position in the texture map, the first transformed position in the texture map being determined according to a pixel position of the first recovered pixel and first remap transform parameters associated with a first patch that the first recovered pixel belongs to; and
reconstructing the 3D mesh frame according to the recovered texture map.