US 11,758,132 B2
Encoder and decoder, encoding method and decoding method with complexity handling for flexibly sized picture partitions
Robert Philipp Skupin, Einsteinufer (DE); Yago Sánchez De La Fuente, Einsteinufer (DE); Cornelius Hellge, Einsteinufer (DE); Thomas Schierl, Einsteinufer (DE); Karsten Sühring, Einsteinufer (DE); and Thomas Wiegand, Einsteinufer (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Munich (DE)
Filed on Jan. 30, 2020, as Appl. No. 16/777,180.
Claims priority of application No. 8248303 (EP), filed on Dec. 28, 2018.
Prior Publication US 2021/0006783 A1, Jan. 7, 2021
Int. Cl. H04N 19/119 (2014.01); H04N 19/105 (2014.01); H04N 19/156 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/105 (2014.11); H04N 19/156 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11)] 6 Claims
OG exemplary drawing
 
2. A video decoder comprising at least one processor and memory, the memory comprising instructions which, when executed by the at least one processor, cause the video decoder to:
decode a first flag for a segment of a current picture from a data stream, the segment encoded into the data stream, wherein the first flag equal to one indicates that blocks of the segment are intra-predicted only, meaning that the blocks of the segment are predicted based on reconstructed samples of the current picture only;
determine to decode a second flag from the data stream based on the first flag being equal to one;
decode the second flag from the data stream that indicates whether or not a current block of the segment is encoded using intra block copy (IBC), wherein when the current block is encoded using IBC, the current block is predicted by copying samples from a reference block of reconstructed samples of the current picture;
based on the second flag indicating that the current block is encoded using IBC, determine a prediction of the current block by copying samples from the reference block of reconstructed samples of the current picture; and
reconstruct the current block based on the prediction of the current block and a prediction residual decoded from the data stream.