US 12,273,548 B2
Decoded picture buffer operation for resolution changes
Ye-Kui Wang, San Diego, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 22, 2022, as Appl. No. 17/701,382.
Application 17/701,382 is a continuation of application No. PCT/US2020/051314, filed on Sep. 17, 2020.
Claims priority of provisional application 62/905,236, filed on Sep. 24, 2019.
Prior Publication US 2022/0217388 A1, Jul. 7, 2022
Int. Cl. H04N 19/46 (2014.01); H04N 19/102 (2014.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/30 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/102 (2014.11); H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/188 (2014.11); H04N 19/30 (2014.11); H04N 19/70 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method implemented by a decoder, the method comprising:
receiving, by a receiver of the decoder, a bitstream comprising a plurality of pictures;
at least one of:
setting, by a processor of the decoder, a value of a no output of prior pictures flag (NoOutputOfPriorPicsFlag) when a value of maximum picture width in luma samples (PicWidthMaxInSamplesY) for a current access unit (AU) is different from a value of PicWidthMaxInSamplesY for a preceding AU in decoding order; and
setting, by the processor, the value of the NoOutputOfPriorPicsFlag when a value of maximum picture height in luma samples (PicHeightMaxInSamplesY) for the current AU is different from a value of PicHeightMaxInSamplesY for the preceding AU in decoding order;
emptying a decoded picture buffer (DPB) without output of contained pictures based on the value of the NoOutputOfPriorPicsFlag;
decoding, by the processor, a current picture; and
storing, by the DPB, the current picture.