公开(公告)号：US11356669B2

公开(公告)日：2022-06-07

申请号：US17000920

申请日：2020-08-24

申请人： Velos Media, LLC

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu ,  Kengo Terada

IPC分类号： H04N19/00 ,  H04N19/139 ,  H04N19/105 ,  H04N19/52 ,  H04N19/503 ,  H04N19/513 ,  H04N19/15 ,  H04N19/593 ,  H04N19/567 ,  H04N19/51 ,  H04N19/44 ,  H04N7/00 ,  H04N19/56 ,  H04N19/137 ,  H04N19/176 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/61 ,  H04N19/172

摘要： A moving picture coding apparatus includes an intra-inter prediction unit which calculates a second motion vector by performing a scaling process on a first motion vector of a temporally neighboring corresponding block, when selectively adding, to a list, a motion vector of each of one or more corresponding blocks each of which is either a block included in a current picture to be coded and spatially neighboring a current block to be coded or a block included in a picture other than the current picture and temporally neighboring the current block, determines whether the second motion vector has a magnitude that is within a predetermined magnitude or not within the predetermined magnitude, and adds the second motion vector to the list when the intra-inter prediction unit determines that the second motion vector has a magnitude that is within the predetermined magnitude range.

公开(公告)号：US11228784B2

公开(公告)日：2022-01-18

申请号：US16668975

申请日：2019-10-30

申请人： Velos Media, LLC

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/61 ,  H04N19/463 ,  H04N19/65 ,  H04N19/577

摘要： An image coding method bitstream includes: determining a maximum number of a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of a current block; deriving a first merging candidate; determining whether or not a total number of the first merging candidate is smaller than the maximum number; deriving a second merging candidate when it is determined that the total number of the first merging candidate is smaller than the maximum number; selecting a merging candidate for use in the coding of the current block from the first merging candidate and the second merging candidate; and coding, using the maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

公开(公告)号：US20210203976A1

公开(公告)日：2021-07-01

申请号：US17202259

申请日：2021-03-15

申请人： Velos Media, LLC

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/107

摘要： A decoding method and apparatus are provided. A first candidate having a first motion vector that has been used to decode a first block, a first prediction direction that corresponds to the first motion vector, and a first reference picture index that identifies a first reference picture is derived. A second candidate having a second motion vector that has been used to decode a second block, a second prediction direction that corresponds to the second motion vector, and a second reference picture index that identifies a second reference picture is derived. When a total number of candidates is less than a maximum number, a third candidate is derived by combining the first motion vector and the first reference picture index for the first prediction direction of the first candidate and the second motion vector and the second reference picture index for the second prediction direction of the second candidate.

公开(公告)号：US10951911B2

公开(公告)日：2021-03-16

申请号：US16553110

申请日：2019-08-27

申请人： Velos Media, LLC

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/107 ,  H04N19/503

摘要： A decoding method and apparatus are provided. A first candidate having a first motion vector that has been used to decode a first block, a first prediction direction that corresponds to the first motion vector, and a first reference picture index that identifies a first reference picture is derived. A second candidate having a second motion vector that has been used to decode a second block, a second prediction direction that corresponds to the second motion vector, and a second reference picture index that identifies a second reference picture is derived. When a total number of candidates is less than a maximum number, a third candidate is derived by combining the first motion vector and the first reference picture index for the first prediction direction of the first candidate and the second motion vector and the second reference picture index for the second prediction direction of the second candidate.

公开(公告)号：US10484708B2

公开(公告)日：2019-11-19

申请号：US16135900

申请日：2018-09-19

申请人： Velos Media, LLC

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/61 ,  H04N19/463 ,  H04N19/65 ,  H04N19/577

摘要： An image coding method bitstream includes: determining a maximum number of a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of a current block; deriving a first merging candidate; determining whether or not a total number of the first merging candidate is smaller than the maximum number; deriving a second merging candidate when it is determined that the total number of the first merging candidate is smaller than the maximum number; selecting a merging candidate for use in the coding of the current block from the first merging candidate and the second merging candidate; and coding, using the maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

公开(公告)号：US11330292B2

公开(公告)日：2022-05-10

申请号：US16524155

申请日：2019-07-28

申请人： Velos Media, LLC

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

IPC分类号： H04N19/513 ,  H04N19/70 ,  H04N19/13 ,  H04N19/436 ,  H04N19/169 ,  H04N19/463 ,  H04N19/91 ,  H04N19/52 ,  H04N19/46 ,  H04N19/17 ,  H04N19/184

摘要： An image coding method includes coding a motion vector difference indicating a difference between the motion vector and a predicted motion vector, wherein the coding includes: coding a first portion that is a part of a first component which is one of a horizontal component and a vertical component of the motion vector difference; coding a second portion that is a part of a second component which is different from the first component and is the other one of the horizontal component and the vertical component; coding a third portion that is a part of the first component and is different from the first portion; coding a fourth portion that is a part of the second component and is different from the second portion; and generating a code string which includes the first portion, the second portion, the third portion, and the fourth portion in the stated order.

公开(公告)号：US10412404B2

公开(公告)日：2019-09-10

申请号：US15867203

申请日：2018-01-10

申请人： Velos Media, LLC

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/107 ,  H04N19/503

摘要： A decoding method and apparatus are provided. A first candidate having a first motion vector that has been used to decode a first block, a first prediction direction that corresponds to the first motion vector, and a first reference picture index that identifies a first reference picture is derived. A second candidate having a second motion vector that has been used to decode a second block, a second prediction direction that corresponds to the second motion vector, and a second reference picture index that identifies a second reference picture is derived. When a total number of candidates is less than a maximum number, a third candidate is derived by combining the first motion vector and the first reference picture index for the first prediction direction of the first candidate and the second motion vector and the second reference picture index for the second prediction direction of the second candidate.

公开(公告)号：US09924202B2

公开(公告)日：2018-03-20

申请号：US15373818

申请日：2016-12-09

申请人： Velos Media, LLC

发明人： Kengo Terada ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toshiyasu Sugio ,  Toru Matsunobu

IPC分类号： H04N7/18 ,  H04N19/91 ,  H04N19/463 ,  H03M7/40 ,  H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/61 ,  H04N19/172

CPC分类号： H04N19/91 ,  H03M7/4006 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/463 ,  H04N19/60 ,  H04N19/61

摘要： An image coding method using arithmetic coding. The method includes: performing arithmetic coding on a first flag that indicates whether or not an absolute value of a target coefficient in a target coefficient block is greater than 1; and performing arithmetic coding on a second flag that indicates whether or not the absolute value is greater than 2. In the arithmetic coding on the first flag and the arithmetic coding on the second flag, it is determined whether or not an immediately-prior coefficient block that has been coded immediately prior to the target coefficient block includes a coefficient having an absolute value greater than a threshold value. Based on a result of the determination, respective contexts to be used in the arithmetic coding on the first and second flags are selected.

公开(公告)号：US10382779B2

公开(公告)日：2019-08-13

申请号：US15498840

申请日：2017-04-27

申请人： Velos Media, LLC

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

IPC分类号： H04N19/52 ,  H04N19/513 ,  H04N19/70 ,  H04N19/13 ,  H04N19/436 ,  H04N19/169 ,  H04N19/46 ,  H04N19/463 ,  H04N19/91 ,  H04N19/17 ,  H04N19/184

摘要： An image coding method includes coding a motion vector difference indicating a difference between the motion vector and a predicted motion vector, wherein the coding includes: coding a first portion that is a part of a first component which is one of a horizontal component and a vertical component of the motion vector difference; coding a second portion that is a part of a second component which is different from the first component and is the other one of the horizontal component and the vertical component; coding a third portion that is a part of the first component and is different from the first portion; coding a fourth portion that is a part of the second component and is different from the second portion; and generating a code string which includes the first portion, the second portion, the third portion, and the fourth portion in the stated order.

公开(公告)号：US10142624B2

公开(公告)日：2018-11-27

申请号：US14509199

申请日：2014-10-08

申请人： Velos Media, LLC

发明人： Kengo Terada ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toshiyasu Sugio ,  Toru Matsunobu

IPC分类号： H04N19/70 ,  H04N19/91 ,  H04N19/20 ,  H04N19/13 ,  H04N19/117 ,  H04N19/82

摘要： The image coding method for coding an input image includes: converting, into a bin string, an offset value used in an offset process to be applied to a pixel value of a reconstructed image corresponding to the input image; and performing bypass arithmetic coding on the bin string using a fixed probability.