US 12,132,930 B2
Image coding method, image decoding method, image coding apparatus, and image decoding apparatus
Viktor Wahadaniah, Singapore (SG); Chong Soon Lim, Singapore (SG); Sue Mon Thet Naing, San Jose, CA (US); Hai Wei Sun, Singapore (SG); Toshiyasu Sugio, Osaka (JP); Takahiro Nishi, Nara (JP); Hisao Sasai, Kanagawa (JP); Youji Shibahara, Osaka (JP); Kyoko Tanikawa, Tokyo (JP); Toru Matsunobu, Osaka (JP); and Kengo Terada, Osaka (JP)
Assigned to SUN PATENT TRUST, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Aug. 30, 2023, as Appl. No. 18/239,947.
Application 18/239,947 is a continuation of application No. 17/728,050, filed on Apr. 25, 2022, granted, now 11,831,907.
Application 17/728,050 is a continuation of application No. 17/116,338, filed on Dec. 9, 2020, granted, now 11,356,696, issued on Jun. 7, 2022.
Application 17/116,338 is a continuation of application No. 16/738,322, filed on Jan. 9, 2020, granted, now 10,893,293, issued on Jan. 12, 2021.
Application 16/738,322 is a continuation of application No. 16/027,589, filed on Jul. 5, 2018, granted, now 10,567,792, issued on Feb. 18, 2020.
Application 16/027,589 is a continuation of application No. 15/878,604, filed on Jan. 24, 2018, granted, now 10,045,047, issued on Aug. 7, 2018.
Application 15/878,604 is a continuation of application No. 15/606,615, filed on May 26, 2017, granted, now 9,912,962, issued on Mar. 6, 2018.
Application 15/606,615 is a continuation of application No. 15/140,673, filed on Apr. 28, 2016, granted, now 9,699,474, issued on Jul. 4, 2017.
Application 15/140,673 is a continuation of application No. 14/674,182, filed on Mar. 31, 2015, granted, now 9,357,227, issued on May 31, 2016.
Application 14/674,182 is a continuation of application No. 14/317,171, filed on Jun. 27, 2014, granted, now 9,191,679, issued on Nov. 17, 2015.
Application 14/317,171 is a continuation of application No. 13/660,507, filed on Oct. 25, 2012, granted, now 8,861,606, issued on Oct. 14, 2014.
Claims priority of provisional application 61/552,863, filed on Oct. 28, 2011.
Prior Publication US 2023/0412835 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/56 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01); H04N 19/51 (2014.01); H04N 19/513 (2014.01); H04N 19/52 (2014.01); H04N 19/58 (2014.01); H04N 19/61 (2014.01)
CPC H04N 19/56 (2014.11) [H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/51 (2014.11); H04N 19/513 (2014.11); H04N 19/52 (2014.11); H04N 19/58 (2014.11); H04N 19/61 (2014.11)] 1 Claim
OG exemplary drawing
 
1. An encoding method of encoding each block among blocks of pictures, the encoding method comprising:
selecting a first picture, the first picture being different from a picture that includes a current block to be encoded;
selecting a first block in the first picture in accordance with a predetermined sequence;
deriving a candidate for a motion vector predictor to be used in encoding of a motion vector for the current block, from a first motion vector used by encoding of the first block;
adding the derived candidate to a list of candidates;
selecting one motion vector predictor from the list of candidates; and
encoding the motion vector of the current block using the selected motion vector predictor, and encoding the current block using the motion vector and a reference picture of the current block,
wherein the reference picture of the current block is different from the first picture, and wherein the deriving includes:
determining whether the reference picture of the current block is a long-term reference picture or a short-term reference picture, and whether a first reference picture of the first block is a long-term reference picture or a short-term reference picture;
deriving the candidate from the first motion vector without scaling based on a temporal distance in the case of determining that each of the reference picture of the current block and the first reference picture of the first block is a long-term reference picture; and
deriving the candidate from the first motion vector by scaling based on a temporal distance in the case of determining that each of the reference picture of the current block and the first reference picture of the first block is a short-term reference picture.