US 12,219,127 B2
Video encoding and decoding based on resampling chroma signals
Je Won Kang, Seoul (KR); Seung Wook Park, Yongin-si (KR); and Wha Pyeong Lim, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and EWHA UNIVERSITY—INDUSTRY COLLABORATION FOUNDATION, Seoul (KR)
Appl. No. 17/797,255
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and EWHA UNIVERSITY—INDUSTRY COLLABORATION FOUNDATION, Seoul (KR)
PCT Filed Feb. 17, 2021, PCT No. PCT/KR2021/002011
§ 371(c)(1), (2) Date Aug. 3, 2022,
PCT Pub. No. WO2021/167340, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10-2020-0018864 (KR), filed on Feb. 17, 2020; application No. 10-2020-0025838 (KR), filed on Mar. 2, 2020; and application No. 10-2021-0021015 (KR), filed on Feb. 17, 2021.
Prior Publication US 2023/0058283 A1, Feb. 23, 2023
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/46 (2014.11)] 6 Claims
OG exemplary drawing
 
1. A method of decoding a video sequence of pictures for allowing the pictures in the video sequence to have different chroma formats, the method comprising:
decoding, from a bitstream, chroma format information for the video sequence, and a flag indicating whether spatial resolutions of the pictures in the video sequence is capable of being changed;
decoding, from the bitstream, at least one first syntax element for specifying a size of a luma picture, which comprises luma samples of a current picture belonging to the video sequence, to thereby determine the size of the luma picture; and
determining a size of a chroma picture, which comprises chroma samples of the current picture, based on the flag,
wherein, when the flag indicates that the spatial resolutions of the pictures in the video sequence is capable of being changed, the size of the chroma picture is set based on at least one second syntax element included in the bitstream for specifying the size of the chroma picture, and
wherein, when the flag indicates that the spatial resolutions of the pictures in the video sequence is not capable of being changed, the size of the chroma picture is set equal to a size defined by the size of the luma picture and the chroma format information for the video sequence.