US 12,034,974 B2
Encoder, decoder, encoding method, and decoding method
Hai Wei Sun, Singapore (SG); Chong Soon Lim, Singapore (SG); Han Boon Teo, Singapore (SG); Jing Ya Li, Singapore (SG); Che Wei Kuo, Singapore (SG); Chu Tong Wang, Singapore (SG); Kiyofumi Abe, Osaka (JP); Takahiro Nishi, Nara (JP); and Tadamasa Toma, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Aug. 11, 2022, as Appl. No. 17/885,740.
Application 17/885,740 is a continuation of application No. PCT/JP2021/007195, filed on Feb. 25, 2021.
Claims priority of provisional application 62/981,222, filed on Feb. 25, 2020.
Prior Publication US 2022/0394303 A1, Dec. 8, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/124 (2014.01); H04N 19/132 (2014.01); H04N 19/186 (2014.01); H04N 19/80 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/124 (2014.11); H04N 19/132 (2014.11); H04N 19/186 (2014.11); H04N 19/80 (2014.11)] 2 Claims
OG exemplary drawing
 
1. An encoder comprising:
circuitry; and
memory coupled to the circuitry, wherein
in operation, the circuitry:
stores a first parameter into a bitstream, the first parameter indicating whether a syntax element related to a chroma tool offset is present in the bitstream;
when the first parameter indicates that the syntax element is present in the bitstream, (i) stores, in the bitstream, one or more second parameters that are used in deblocking filtering for a chroma sample of a current image, in addition to the syntax element, (ii) performs the deblocking filtering using the one or more second parameters, and (iii) encodes the current image; and
when the first parameter indicates that the syntax element is not present in the bitstream, encodes the current image without storing the one or more second parameters into the bitstream.