US 12,425,634 B2
Image decoding method and image decoding apparatus using candidate motion vectors
Toshiyasu Sugio, Osaka (JP); Takahiro Nishi, Nara (JP); Youji Shibahara, Osaka (JP); Kyoko Tanikawa, Osaka (JP); Hisao Sasai, 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. 27, 2024, as Appl. No. 18/588,871.
Application 18/588,871 is a continuation of application No. 17/844,673, filed on Jun. 20, 2022, granted, now 11,949,903.
Application 17/844,673 is a continuation of application No. 17/202,259, filed on Mar. 15, 2021, granted, now 11,368,710, issued on Jun. 21, 2022.
Application 17/202,259 is a continuation of application No. 16/553,110, filed on Aug. 27, 2019, granted, now 10,951,911, issued on Mar. 16, 2021.
Application 16/553,110 is a continuation of application No. 15/867,203, filed on Jan. 10, 2018, granted, now 10,412,404, issued on Sep. 10, 2019.
Application 15/867,203 is a continuation of application No. 15/379,993, filed on Dec. 15, 2016, granted, now 9,900,613, issued on Feb. 20, 2018.
Application 15/379,993 is a continuation of application No. 14/587,126, filed on Dec. 31, 2014, granted, now 9,560,373, issued on Jan. 31, 2017.
Application 14/587,126 is a continuation of application No. 13/482,411, filed on May 29, 2012, granted, now 8,953,689, issued on Feb. 10, 2015.
Claims priority of provisional application 61/491,549, filed on May 31, 2011.
Prior Publication US 2024/0259582 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/513 (2014.01); H04N 19/105 (2014.01); H04N 19/107 (2014.01); H04N 19/52 (2014.01); H04N 19/56 (2014.01); H04N 19/503 (2014.01)
CPC H04N 19/513 (2014.11) [H04N 19/105 (2014.11); H04N 19/107 (2014.11); H04N 19/52 (2014.11); H04N 19/56 (2014.11); H04N 19/503 (2014.11)] 1 Claim
OG exemplary drawing
 
1. An image coding method for coding a current block, the image coding method comprising:
encoding information in a slice header indicative of a maximum number of merging candidates, when the maximum number of merging candidates is two or more,
wherein, when the maximum number of merging candidates is three or more, the image coding method further comprises:
deriving a first candidate having a first motion vector that has been used to code a first block;
deriving a second candidate having a second motion vector that has been used to code a second block, the second block being different from the first block;
determining whether or not a total number of candidates having the first candidate and the second candidate is less than a maximum candidate number;
deriving a third candidate having a third motion vector and a fourth motion vector when the total number of candidates having the first candidate and the second candidate is less than the maximum candidate number,
the third motion vector being identical to the first motion vector,
the fourth motion vector being identical to the second motion vector;
coding an index corresponding to a candidate having a motion vector; and
generating a bitstream having the coded index,
wherein the maximum candidate number is used to code the index,
wherein the motion vector is used to code the current block, and
wherein the candidate is one of a plurality of candidates having the first candidate, the second candidate, and the third candidate.