US 12,425,616 B2
Scaled intra reference picture
Xiaozhong Xu, State College, PA (US); Xin Zhao, San Jose, 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 Oct. 3, 2023, as Appl. No. 18/376,333.
Claims priority of provisional application 63/425,557, filed on Nov. 15, 2022.
Prior Publication US 2024/0163463 A1, May 16, 2024
Int. Cl. H04N 19/33 (2014.01); H04N 19/105 (2014.01); H04N 19/119 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/33 (2014.11) [H04N 19/105 (2014.11); H04N 19/119 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method for video decoding, comprising:
receiving a bitstream including a first sub-bitstream that corresponds to a scaled version of a current picture having a first spatial resolution and a second sub-bitstream that corresponds to the current picture in a full scale having a second spatial resolution that is higher than the first spatial resolution;
reconstructing the scaled version of the current picture from the first sub-bitstream; and
reconstructing a second block in the current picture in the full scale having the second spatial resolution based on (i) partitioning information of one or more first blocks in the scaled version of the current picture having the first spatial resolution or (ii) intra prediction information of the one or more first blocks in the scaled version of the current picture having the first spatial resolution, wherein
a first region in the scaled version of the current picture is collocated with the second block in the current picture in the full scale, and the first region overlaps with the one or more first blocks in the scaled version of the current picture.