US 12,452,440 B2
Video decoder, video encoder, method for decoding a video content, method for encoding a video content, computer program and video bitstream
Jan Stegemann, Berlin (DE); Heiner Kirchhoffer, Berlin (DE); Detlev Marpe, Berlin (DE); Heiko Schwarz, 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 Jun. 25, 2024, as Appl. No. 18/753,366.
Application 18/753,366 is a continuation of application No. 17/900,402, filed on Aug. 31, 2022, granted, now 12,058,352.
Application 17/900,402 is a continuation of application No. 17/036,777, filed on Sep. 29, 2020, granted, now 11,457,230, issued on Sep. 27, 2022.
Application 17/036,777 is a continuation of application No. PCT/EP2019/058057, filed on Mar. 29, 2019.
Claims priority of application No. 18165250 (EP), filed on Mar. 29, 2018.
Prior Publication US 2024/0348805 A1, Oct. 17, 2024
Int. Cl. H04N 19/189 (2014.01); H04N 19/119 (2014.01); H04N 19/13 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/189 (2014.11) [H04N 19/119 (2014.11); H04N 19/13 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A video decoder comprising at least one processor, the at least one processor configured to:
decode video content based on arithmetically decoding an encoded representation of a binary sequence;
determine a first source statistic value, at+1, to be equal to:

OG Complex Work Unit Math
wherein xt is a decoded binary value,
at is a previous version of the first source statistic value,
na is a first window size parameter,

OG Complex Work Unit Math
 where
BITSa is a number of bits used to represent the first source statistic value;
determine a second source statistic value, bt+1, to be equal to:

OG Complex Work Unit Math
wherein xt is the decoded binary value,
bt is a previous version of the second source statistic value,
nb is a second window size parameter,

OG Complex Work Unit Math
 where
BITSb is a number of bits used to represent the second source statistic value,
wherein nb≥(na+3) and BITSb>BITSa;
determine a combined source statistic value based on the first source statistic value and the second source statistic value;
determine one or more range values for an interval subdivision based on the combined source statistic value; and
arithmetically decode the encoded representation of the binary sequence using the one or more range values.