US 12,108,088 B2
Usage of access unit delimiters and adaptation parameter sets
Yago Sánchez De La Fuente, Berlin (DE); Karsten Sühring, Berlin (DE); Cornelius Hellge, Berlin (DE); Thomas Schierl, Berlin (DE); Robert Skupin, Berlin (DE); and Thomas Wiegand, Berlin (DE)
Assigned to FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
Appl. No. 17/636,564
Filed by FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
PCT Filed Aug. 18, 2020, PCT No. PCT/EP2020/073117
§ 371(c)(1), (2) Date Feb. 18, 2022,
PCT Pub. No. WO2021/032747, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 19192413 (EP), filed on Aug. 19, 2019.
Prior Publication US 2022/0303582 A1, Sep. 22, 2022
Int. Cl. H04N 19/80 (2014.01); H04N 19/117 (2014.01); H04N 19/169 (2014.01); H04N 19/44 (2014.01)
CPC H04N 19/80 (2014.11) [H04N 19/117 (2014.11); H04N 19/188 (2014.11); H04N 19/44 (2014.11)] 8 Claims
OG exemplary drawing
 
1. A video decoding apparatus comprising a processor and a memory, the processor, working together with the memory, configured to:
read one or more video coding layer (VCL) network abstraction layer (NAL) units representing one or more slices in a video data stream, wherein a VCL NAL unit of the one or more VCL NAL units includes an alf_ctb_flag that specifies whether an adaptive loop filter (ALF) is applied to a coding tree block (CTB) of the VCL NAL unit;
generate a reconstructed version of a decoded picture from the one or more VCL NAL units; and
perform adaptive loop filtering on the reconstructed version of the decoded picture in a manner depending on one or more ALF coefficients of a non-VCL NAL unit corresponding to a previous picture, wherein the non-VCL NAL unit has a suffix adaptive parameter set (APS) NAL unit type indicating that the non-VCL NAL unit follows after all VCL NAL units of an AU.