US 12,439,036 B2
Methods and apparatuses of loop filter parameter signaling in image or video processing system
Chia-Ming Tsai, Hsinchu (TW); Chih-Wei Hsu, Hsinchu (TW); and Shih-Ta Hsiang, Hsinchu (TW)
Assigned to HFI INNOVATION INC., Zhubei (TW)
Appl. No. 17/904,882
Filed by HFI Innovation Inc., Zhubei (TW)
PCT Filed Feb. 25, 2021, PCT No. PCT/CN2021/077862
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/170036, PCT Pub. Date Sep. 2, 2021.
Claims priority of provisional application 62/981,583, filed on Feb. 26, 2020.
Prior Publication US 2023/0087875 A1, Mar. 23, 2023
Int. Cl. H04N 19/117 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01); H04N 19/86 (2014.01)
CPC H04N 19/117 (2014.11) [H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11); H04N 19/86 (2014.11)] 5 Claims
OG exemplary drawing
 
1. An image or video processing method in an image or video coding system, comprising:
receiving input data associated with a current picture or receiving input data associated with a current slice in the current picture;
determining that the current picture is not a monochrome picture;
determining a syntax element used to indicate derivation of chrominance (chroma) deblocking parameters for the current picture or current slice;
implicitly inferring the chroma deblocking parameters for the current picture or current slice from luma deblocking parameters according to a value of the syntax element;
applying a deblocking filter operation to chroma components of the current picture or the current slice according to the chroma deblocking parameters, the applying based on signaling or parsing the chroma deblocking parameters for the current picture or the current slice and further based on the determining that the current picture is not a monochrome picture; and
encoding or decoding the current picture or the current slice of the current picture.