US 11,943,446 B2
Method for signaling of reference picture resampling with resampling picture size indication in video bitstream
Byeongdoo Choi, Palo Alto, CA (US); Stephan Wenger, Hillsborough, 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 Mar. 16, 2023, as Appl. No. 18/122,158.
Application 18/122,158 is a continuation of application No. 17/697,402, filed on Mar. 17, 2022, granted, now 11,641,472.
Application 17/697,402 is a continuation of application No. 17/022,727, filed on Sep. 16, 2020, granted, now 11,317,093, issued on Apr. 26, 2022.
Claims priority of provisional application 62/905,319, filed on Sep. 24, 2019.
Prior Publication US 2023/0239476 A1, Jul. 27, 2023
Int. Cl. H04N 19/132 (2014.01); H04N 19/146 (2014.01); H04N 19/172 (2014.01); H04N 19/184 (2014.01); H04N 19/196 (2014.01)
CPC H04N 19/132 (2014.11) [H04N 19/146 (2014.11); H04N 19/172 (2014.11); H04N 19/184 (2014.11); H04N 19/196 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method of generating an encoded video bitstream using at least one processor, the method comprising:
generating the encoded video bitstream that comprises (i) a flag indicating whether a conformance window is used for a reference picture resampling and (ii) a reference picture resampling parameter,
wherein the flag indicates that the conformance window is not used for reference picture resampling,
wherein based on a determination that the conformance window is not used for the reference picture resampling and a determination that the reference picture resampling parameter is to be signaled, the reference picture resampling parameter comprises a plurality of reference region parameters to be used to calculate scaling for the reference picture resampling, the plurality of reference region parameters comprising at least a reference region left offset and a reference region top offset,
wherein a current picture is encoded using the reference picture resampling parameter comprising the plurality of reference region parameters.