公开(公告)号：US20180306076A1

公开(公告)日：2018-10-25

申请号：US15991330

申请日：2018-05-29

Applicant: Sun Patent Trust

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

IPC: F01M13/04 ,  B01D45/08 ,  B01D36/00 ,  B29C65/00

CPC classification number: F01M13/04 ,  B01D36/001 ,  B01D45/08 ,  B29C65/00 ,  F01M2013/0433 ,  F01M2013/0438 ,  H04N19/10 ,  H04N19/105 ,  H04N19/174 ,  H04N19/70

Abstract: A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description.

公开(公告)号：US20180278935A1

公开(公告)日：2018-09-27

申请号：US15991061

申请日：2018-05-29

Applicant: Sun Patent Trust

Inventor： Daisaku KOMIYA ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC: H04N19/124 ,  H04N19/172 ,  H04N19/436 ,  G06T9/00 ,  H04N19/60 ,  H04N19/70 ,  H04N19/134 ,  H04N19/51 ,  H04N19/593 ,  H04N19/17 ,  H04N19/46 ,  H04N19/13 ,  H04N19/176 ,  H04N19/174 ,  H04N19/503

CPC classification number: H04N19/124 ,  G06T9/00 ,  G06T9/005 ,  G06T9/007 ,  G06T9/008 ,  H04N19/13 ,  H04N19/134 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/436 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/593 ,  H04N19/60 ,  H04N19/70

Abstract: A non-transitory recording medium including a program is provided. The program causes a processor to divide a picture into tiles. The tiles are coded to generate pieces of coded data, each of which corresponds to a different one of the tiles. In this regard, a first tile of the tiles is coded with reference to coding information of an already-coded tile neighboring the first tile when a boundary between the first tile and the already-coded tile is a first boundary. The first tile is coded without reference to the coding information of the already-coded tile when the boundary between the first tile and the already-coded tile is a second boundary. A bitstream including the pieces of coded data is generated. The bitstream includes tile boundary independence information which indicates whether each boundary between the tiles is one of the first boundary and the second boundary.

公开(公告)号：US20180176605A1

公开(公告)日：2018-06-21

申请号：US15897399

申请日：2018-02-15

Applicant: Sun Patent Trust

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

IPC: H04N19/91 ,  H04N19/136 ,  H04N19/436 ,  H04N19/13 ,  H04N19/70 ,  H04N19/174

CPC classification number: H04N19/91 ,  H04N19/13 ,  H04N19/136 ,  H04N19/174 ,  H04N19/436 ,  H04N19/70

Abstract: An image decoding method of decoding, on a per-block basis, a coded image included in a bitstream, includes: performing arithmetic decoding on a current block to be decoded; determining whether or not the current block is at the end of a slice; determining, when it is determined that the current block is not at the end of the slice, whether or not the current block is at the end of a sub-stream which is a structural unit of the image that is different from the slice; and performing arithmetic decoding on a sub-last bit and performing arithmetic decoding termination, when it is determined that the current block is at the end of the sub-stream.

公开(公告)号：US20180176580A1

公开(公告)日：2018-06-21

申请号：US15895251

申请日：2018-02-13

Applicant: Sun Patent Trust

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

IPC: H04N19/176 ,  H04N19/186 ,  H04N19/60

CPC classification number: H04N19/176 ,  G06T9/007 ,  H04N19/122 ,  H04N19/136 ,  H04N19/186 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

Abstract: An image coding method of coding an image on a per coding unit basis, the method comprising: applying a frequency transform to luminance data and chrominance data of transform units in the coding unit including predetermined blocks each corresponding to one or more of the transform units; and coding the luminance data and the chrominance data to which the frequency transform has been applied to generate a bitstream in which the luminance data and the chrominance data are grouped on a per predetermined block basis.

公开(公告)号：US20180176571A1

公开(公告)日：2018-06-21

申请号：US15895283

申请日：2018-02-13

Applicant: Sun Patent Trust

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO

IPC: H04N19/13 ,  H04N19/196 ,  H04N19/167 ,  H03M7/40 ,  H04N19/157 ,  H04N19/44

CPC classification number: H04N19/10 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/157 ,  H04N19/167 ,  H04N19/197 ,  H04N19/44

Abstract: An arithmetic decoding method is a method in which a context variable specifying a probability of a possible value of each of elements included in a binary string corresponding to a value of a given variable is initialized and arithmetic decoding is performed, using the context variable. The method includes: determining, from among a plurality of initialization methods as a method of initializing the context variable, an initialization method corresponding to the given variable or a group which includes the given variable; and initializing the context variable using the determined initialization method.

公开(公告)号：US20180131958A1

公开(公告)日：2018-05-10

申请号：US15867203

申请日：2018-01-10

Applicant: Sun Patent Trust

Inventor： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC: H04N19/513 ,  H04N19/56 ,  H04N19/52 ,  H04N19/105 ,  H04N19/107 ,  H04N19/503

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/107 ,  H04N19/503 ,  H04N19/52 ,  H04N19/56

Abstract: 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：US20180124424A1

公开(公告)日：2018-05-03

申请号：US15861222

申请日：2018-01-03

Applicant: Sun Patent Trust

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC: H04N19/52 ,  H04N19/13 ,  H04N19/46 ,  H04N19/122 ,  H04N19/184 ,  H04N19/176

Abstract: The image coding method includes: determining a context for a current block to be processed, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “mvd_l0” and “mvd_l1”.

公开(公告)号：US20180103256A1

公开(公告)日：2018-04-12

申请号：US15837477

申请日：2017-12-11

Applicant: Sun Patent Trust

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

IPC: H04N19/15 ,  H04N19/46 ,  H04N19/70 ,  H04N19/132

CPC classification number: H04N19/15 ,  G06T9/00 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/70

Abstract: An encoding apparatus of encoding units included in a picture is provided. The encoding apparatus 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, with the common-interval information being included in control information of the bitstream.

公开(公告)号：US20170374376A1

公开(公告)日：2017-12-28

申请号：US15698955

申请日：2017-09-08

Applicant: Sun Patent Trust

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

IPC: H04N19/44 ,  H04N19/90 ,  H04N19/70 ,  H04N19/13 ,  H04N19/18 ,  H04N19/176 ,  H04N19/167 ,  H04N19/91 ,  H04N19/60 ,  H04N19/61

CPC classification number: H04N19/44 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/90 ,  H04N19/91

Abstract: An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block.

公开(公告)号：US20170374371A1

公开(公告)日：2017-12-28

申请号：US15697652

申请日：2017-09-07

Applicant: Sun Patent Trust

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC: H04N19/176 ,  H04N19/593 ,  H04N19/463 ,  H04N19/196 ,  H04N19/124 ,  H04N19/159 ,  H04N19/157 ,  H04N19/13 ,  H04N19/61 ,  H04N19/21

CPC classification number: H04N19/176 ,  H04N19/124 ,  H04N19/13 ,  H04N19/157 ,  H04N19/159 ,  H04N19/196 ,  H04N19/21 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61

Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “ref_idx_l0” and “ref_idx_l1”.