US 12,483,692 B2
Encoder and decoder, encoding method and decoding method for reference picture resampling extensions
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)
Filed by FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
Filed on Jan. 8, 2024, as Appl. No. 18/406,308.
Application 18/406,308 is a continuation of application No. 17/763,508, granted, now 11,909,957, previously published as PCT/EP2020/076690, filed on Sep. 24, 2020.
Claims priority of application No. 19199304 (EP), filed on Sep. 24, 2019.
Prior Publication US 2024/0155108 A1, May 9, 2024
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/172 (2014.01); H04N 19/30 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/172 (2014.11); H04N 19/30 (2014.11); H04N 19/46 (2014.11)] 10 Claims
OG exemplary drawing
 
1. A video decoder for decoding an encoded video signal comprising encoded picture data to decode a plurality of pictures of a video sequence of a video, the video decoder comprising:
at least one memory;
at least one processor comprising processor circuitry communicatively coupled to the at least one memory, the at least one processor, individually and/or collectively configured to read instructions from the at least one memory to perform operations comprising:
receiving the encoded video signal comprising the encoded picture data and a sequence parameter set (SPS) that includes an indication that a sample aspect ratio (SAR) is changeable within a coded video sequence (CVS);
receiving a first supplemental enhancement information (SEI) message within the encoded video signal, the first SEI message comprising a first SAR value for a first group of one or more of the plurality of pictures within the CVS;
receiving a second SEI message within the encoded video signal, the second SEI message comprising a second SAR value for a second group of one or more of the plurality of pictures within the CVS, wherein the second SAR value is different than the first SAR value, and wherein the second group is different than the first group;
decoding the encoded picture data corresponding to the first group and the second group of one or more of the plurality of pictures to obtain a plurality of decoded pictures; and
outputting the plurality of decoded pictures, wherein one or more of the plurality of decoded pictures have a different SAR than one or more other pictures of the plurality of decoded pictures,
wherein the first group of the one or more of the plurality of pictures of the CVS comprises the one or more of the plurality of pictures of the CVS that are encoded in the encoded picture data that is received after the first SEI message comprising the first SAR value is received and before the second SEI message comprising the second SAR value is received, and
wherein the second group of the one or more of the plurality of pictures of the CVS comprises the one or more of the plurality of pictures of the CVS that are encoded in the encoded picture data that is received after the second SEI message comprising the second SAR value is received.