公开(公告)号：US20220377365A1

公开(公告)日：2022-11-24

申请号：US17882902

申请日：2022-08-08

申请人： Sun Patent Trust

发明人： Chong Soon LIM ,  Sue Mon Thet NAING ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/513 ,  H04N19/176 ,  H04N19/103 ,  H04N19/52 ,  H04N19/70 ,  H04N19/44

摘要： A method of performing motion vector prediction for a current block in a picture is provided which includes: deriving a candidate for a motion vector predictor to code a current motion vector of the current block, from a first motion vector of a first block that is spatially adjacent or temporally adjacent to the current block; adding the derived candidate to a list of candidates; and deriving at least one motion vector predictor based on a selected candidate from the list of candidates, wherein the deriving of the candidate includes determining whether to derive the candidate from the first motion vector, based on a type of a current reference picture and a type of a first reference picture, the current reference picture being referred to from the current block using the current motion vector, the first reference picture being referred to from the first block using the first motion vector.

公开(公告)号：US20210243448A1

公开(公告)日：2021-08-05

申请号：US17234974

申请日：2021-04-20

申请人： Sun Patent Trust

发明人： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Hai Wei SUN ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/134 ,  H04N19/573 ,  H04N19/58 ,  H04N19/44 ,  H04N19/105 ,  H04N19/70 ,  H04N19/172 ,  H04N19/174 ,  H04N19/42 ,  H04N19/115 ,  H04N19/119 ,  H04N19/136 ,  H04N19/423

摘要： An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; writing, into the sequence parameter set, reference list description defining information for defining a plurality of reference list descriptions corresponding to the buffer descriptions; and writing, into a first header of each processing unit which is included in a coded bitstream, buffer description selecting information for specifying a selected buffer description.

公开(公告)号：US20210144396A1

公开(公告)日：2021-05-13

申请号：US17152042

申请日：2021-01-19

申请人： Sun Patent Trust

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/51 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46 ,  H04N19/90

摘要： A moving picture coding method includes: making a determination as to whether or not to code all blocks in a current picture in the skip mode; setting, based on a result of the determination, a first flag indicating whether or not a temporally neighboring block is to be referenced, a value of a parameter for determining a total number of merging candidates, and a second flag for each block included in the current picture, the second flag indicating whether or not the block is to be coded in the skip mode; calculating, as a merging candidate, a neighboring block usable for merging; and coding an index which indicates a merging candidate to be used for coding of the current block and attaching the coded index to a bitstream.

公开(公告)号：US20210099714A1

公开(公告)日：2021-04-01

申请号：US17122447

申请日：2020-12-15

申请人： Sun Patent Trust

发明人： Kengo TERADA ,  Takahiro NISHI ,  Hisao SASAI ,  Satoshi YOSHIKAWA

IPC分类号： H04N19/146 ,  H04N19/132 ,  H04N19/156 ,  H04N19/187 ,  H04N19/31 ,  H04N19/30 ,  H04N19/105 ,  H04N19/154 ,  H04N19/184

摘要： A video encoding method of performing scalable encoding on input video includes: determining a total number of layers of the scalable encoding to be less than or equal to a maximum layer count determined according to a frame rate; and performing the scalable encoding on the input video to generate a bitstream, using the determined total number of layers.

公开(公告)号：US20210092440A1

公开(公告)日：2021-03-25

申请号：US17116338

申请日：2020-12-09

申请人： Sun Patent Trust

发明人： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Hai Wei SUN ,  Toshiyasu SUGIO ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/56 ,  H04N19/52 ,  H04N19/51 ,  H04N19/58 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176

摘要： An image coding method includes: deriving a candidate for a motion vector predictor from a co-located motion vector; adding the candidate to a list; selecting the motion vector predictor from the list; and coding a current block and coding a current motion vector, wherein the deriving includes: deriving the candidate by a first derivation scheme in the case of determining that each of a current reference picture and a co-located reference picture is a long-term reference picture; and deriving the candidate by a second derivation scheme in the case of determining that each of the current reference picture and the co-located reference picture is a short-term reference picture.

公开(公告)号：US20200288148A1

公开(公告)日：2020-09-10

申请号：US16880199

申请日：2020-05-21

申请人： Sun Patent Trust

发明人： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/174 ,  H04N19/70 ,  H04N19/117 ,  H04N19/463 ,  H04N19/127 ,  H04N19/44 ,  H04N19/436

摘要： An image encoding method including: a constraint information generating step of generating tile constraint information indicating whether or not there is a constraint in filtering on boundaries between adjacent tiles among a plurality of tiles obtained by dividing a picture, and storing the tile constraint information into a sequence parameter set; and a filter information generating step of generating, for each of the boundaries, one of a plurality of filter information items respectively indicating whether or not filtering is executed on the boundaries, and storing the plurality of filter information items into a plurality of picture parameter sets, wherein, in the filter information generating step, the plurality of filter information items which indicate identical content are generated when the tile constraint information indicates that there is the constraint in the filtering.

公开(公告)号：US20200154133A1

公开(公告)日：2020-05-14

申请号：US16738322

申请日：2020-01-09

申请人： Sun Patent Trust

发明人： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Hai Wei SUN ,  Toshiyasu SUGIO ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/56 ,  H04N19/52 ,  H04N19/51 ,  H04N19/58 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176

摘要： An image coding method includes: deriving a candidate for a motion vector predictor from a co-located motion vector; adding the candidate to a list; selecting the motion vector predictor from the list; and coding a current block and coding a current motion vector, wherein the deriving includes: deriving the candidate by a first derivation scheme in the case of determining that each of a current reference picture and a co-located reference picture is a long-term reference picture; and deriving the candidate by a second derivation scheme in the case of determining that each of the current reference picture and the co-located reference picture is a short-term reference picture.

公开(公告)号：US20190230351A1

公开(公告)日：2019-07-25

申请号：US16375127

申请日：2019-04-04

申请人： Sun Patent Trust

发明人： Hisao SASAI ,  Kengo TERADA ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Toshiyasu SUGIO ,  Toru MATSUNOBU

IPC分类号： H04N19/105 ,  H04N19/463 ,  H04N19/91 ,  H04N19/132 ,  H04N19/70

摘要： A moving picture coding method includes: performing context adaptive binary arithmetic coding in which a variable probability value is used, on first information among multiple types of sample adaptive offset (SAO) information used for SAO that is a process of assigning an offset value to a pixel value of a pixel included in an image generated by coding the input image; and continuously performing bypass arithmetic coding in which a fixed probability value is used, on second information and third information among the multiple types of the SAO information, wherein the coded second and third information are placed after the coded first information in the bit stream.

公开(公告)号：US20190158864A1

公开(公告)日：2019-05-23

申请号：US16253672

申请日：2019-01-22

申请人： Sun Patent Trust

发明人： Hisao SASAI ,  Kengo TERADA

IPC分类号： H04N19/46 ,  H04N19/70

摘要： Image coding and decoding methods are provided. A first flag indicates whether a predetermined extension standard of a predetermined image coding standard is used. When the first flag indicates that the extension standard is used, a second flag indicates whether a first scheme is used for coding and decoding a current block included in an image. The first scheme is included in the extension standard. When the first flag indicates that the extension standard is used, a third flag indicates whether a third scheme is used for coding and decoding the image. The third scheme is included in the extension standard. The second flag and the third flag are included in headers of different layers, with the first flag corresponding to each of the second flag and the third flag being included in each of the headers.

公开(公告)号：US20190075300A1

公开(公告)日：2019-03-07

申请号：US16183241

申请日：2018-11-07

申请人： Sun Patent Trust

发明人： Tadamasa TOMA ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC分类号： H04N19/15 ,  H04N19/132 ,  H04N19/46 ,  G06T9/00 ,  H04N19/70 ,  H04N19/176 ,  H04N19/13 ,  H04N19/423

摘要： An encoding method of encoding units included in a picture is provided. The encoding method generates a first flag indicating whether a removal time of encoded data from a buffer by a hypothetical decoder is set per unit. When the removal time is set per unit, a second flag is generated which indicates whether an interval between removal times of the units is constant. When the second flag indicates that the interval is constant, common-interval information is generated which is distinct from the second flag and indicates a constant time interval between the removal times of the units. A bitstream including the encoded data, the first flag, the second flag, and the common-interval information is generated. The first flag is included in video usability information of the bitstream. The second flag and the common-interval information are included in control information of the bitstream.