	US 12,088,827 B2
	Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus
Kengo Terada, Osaka (JP); Takahiro Nishi, Nara (JP); Youji Shibahara, Osaka (JP); Kyoko Tanikawa, Osaka (JP); Hisao Sasai, Osaka (JP); Toshiyasu Sugio, Osaka (JP); and Toru Matsunobu, Osaka (JP)
Assigned to SUN PATENT TRUST, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Feb. 28, 2022, as Appl. No. 17/682,124.
Application 17/682,124 is a continuation of application No. 16/656,751, filed on Oct. 18, 2019, granted, now 11,297,333.
Application 16/656,751 is a continuation of application No. 15/895,251, filed on Feb. 13, 2018, granted, now 10,491,908, issued on Nov. 26, 2019.
Application 15/895,251 is a continuation of application No. 15/488,891, filed on Apr. 17, 2017, granted, now 9,930,347, issued on Mar. 27, 2018.
Application 15/488,891 is a continuation of application No. 14/707,200, filed on May 8, 2015, granted, now 9,661,330, issued on May 23, 2017.
Application 14/707,200 is a continuation of application No. 14/686,838, filed on Apr. 15, 2015, granted, now 9,615,099, issued on Apr. 4, 2017.
Application 14/686,838 is a continuation of application No. 13/959,897, filed on Aug. 6, 2013, granted, now 9,036,927, issued on May 19, 2015.
Application 13/959,897 is a continuation of application No. 13/628,143, filed on Sep. 27, 2012, granted, now 9,025,891, issued on May 5, 2015.
Claims priority of provisional application 61/540,048, filed on Sep. 28, 2011.
Prior Publication US 2022/0191516 A1, Jun. 16, 2022
Int. Cl. H04N 19/176 (2014.01); G06T 9/00 (2006.01); H04N 19/122 (2014.01); H04N 19/136 (2014.01); H04N 19/186 (2014.01); H04N 19/44 (2014.01); H04N 19/60 (2014.01); H04N 19/70 (2014.01)

CPC H04N 19/176 (2014.11) [G06T 9/007 (2013.01); H04N 19/122 (2014.11); H04N 19/136 (2014.11); H04N 19/186 (2014.11); H04N 19/44 (2014.11); H04N 19/60 (2014.11); H04N 19/70 (2014.11)]

2 Claims

1. An image coding apparatus, comprising:

one or more memories; and

circuitry that executes operations comprising:

performing transformation on luminance data and chrominance data of each of plurality of transform units;

arranging, for each of the plurality of transform units, transformed luminance data and transformed chrominance data into a set; and

coding, into a bitstream on a per coding unit basis, the sets arranged for the plurality of transform units, the sets being coded into the bitstream in order,

wherein coding units include a coding unit having a first transform unit and a second transform unit,

wherein, in the coding of the coding unit having the first transform unit and the second transform unit, the set of the transformed luminance data and the transformed chrominance data arranged for the first transform unit is coded into the bitstream before the set of the transformed luminance data and the transformed chrominance data arranged for the second transform unit is coded into the bitstream,

wherein the coding units are included in a slice of an image,

wherein the performing transformation on the luminance data and the chrominance data of each of the plurality of transform units includes

combining chrominance data of transform units included in the coding unit and performing transformation on the combined chrominance data, when the transform unit is smaller than a predetermined size; and

performing transformation on the chrominance data without combining the chrominance data, when the transform unit is larger than or equal to the predetermined size,

wherein, for at least one of the transform units included in the coding unit, the transformed luminance data is arranged with the transformed combined chrominance data into the set, when the transform unit is smaller than the predetermined size, and

wherein, for each of the transform units included in the coding unit, the transformed luminance data is arranged with the transformed uncombined chrominance data into the set, when the transform unit is larger than or equal to the predetermined size.