公开(公告)号：US20250024069A1

公开(公告)日：2025-01-16

申请号：US18895858

申请日：2024-09-25

Applicant: Sun Patent Trust

Inventor： 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: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/58 ,  H04N19/61

Abstract: 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：US20240406420A1

公开(公告)日：2024-12-05

申请号：US18805690

申请日：2024-08-15

Applicant: SUN PATENT TRUST

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  TOSHIYASU SUGIO ,  KYOKO TANIKAWA ,  TORU MATSUNOBU

IPC: H04N19/21 ,  H04N19/105 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/91

Abstract: The image decoding method includes determining a context for use in a current block to be processed, from among a plurality of contexts, wherein in the determining: the context is determined under a condition that control parameters of a left block and an upper block are used, when the signal type is a first type; and the context is determined under a third condition that the control parameter of the upper block is not used and a hierarchical depth of a data unit to which the control parameter of the current block belongs is used, when the signal type is a third type, and the third type is one or more of (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “intra_chroma_pred_mode”, (vi) “cbf_luma”, and (vii) “cbf_cb” or “cbf_cr”.

公开(公告)号：US20240406417A1

公开(公告)日：2024-12-05

申请号：US18802073

申请日：2024-08-13

Applicant: Sun Patent Trust

Inventor： Hisao SASAI ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu ,  Kengo Terada

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

Abstract: 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：US20240283941A1

公开(公告)日：2024-08-22

申请号：US18625935

申请日：2024-04-03

Applicant: Sun Patent Trust

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

IPC: H04N19/139 ,  H04N19/102 ,  H04N19/105 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/51 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70

CPC classification number: H04N19/139 ,  H04N19/102 ,  H04N19/105 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70 ,  H04N19/184 ,  H04N19/197

Abstract: A method for transmitting a bitstream via a network is provided. The bitstream being generated by: 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 and a first reference picture index value that identifies a first reference picture corresponding to the second motion vector, with the second motion vector being a first zero vector; deriving a third candidate having a third motion vector and a second reference picture index value that identifies a second reference picture corresponding to the third motion vector, with the third motion vector being a second zero vector. One candidate from a plurality of candidates, including the first, second, and third candidate is selected, and an index identifying the selected one candidate is coded.

公开(公告)号：US20240179307A1

公开(公告)日：2024-05-30

申请号：US18394256

申请日：2023-12-22

Applicant: Sun Patent Trust

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

IPC: H04N19/115 ,  H04N19/103 ,  H04N19/146 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52

CPC classification number: H04N19/115 ,  H04N19/103 ,  H04N19/146 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52

Abstract: An image coding method includes: generating a first flag indicating whether or not a motion vector predictor is to be selected from among one or more motion vector predictor candidates; generating a second flag indicating whether or not a motion vector predictor is to be selected from among the one or more motion vector predictor candidates in coding a current block to be coded in a predetermined coding mode, when the first flag indicates that a motion vector predictor is to be selected; and generating a coded signal in which the first flag and the second flag are included in header information, when the first flag indicates that a motion vector predictor is to be selected.

公开(公告)号：US20240073422A1

公开(公告)日：2024-02-29

申请号：US18387917

申请日：2023-11-08

Applicant: Sun Patent Trust

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

IPC: H04N19/13 ,  A61F13/00 ,  A61M1/00 ,  G06T9/00 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/169 ,  H04N19/189 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/13 ,  A61F13/00068 ,  A61M1/732 ,  A61M1/962 ,  G06T9/00 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/1887 ,  H04N19/189 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  A61F2013/00174 ,  A61F2013/0057 ,  A61F2013/0091 ,  A61F2013/00944 ,  A61F2013/00957 ,  A61M2205/15 ,  A61M2205/3592 ,  A61M2205/8206

Abstract: An image coding method includes: performing context arithmetic coding to consecutively code (i) first information indicating whether or not to perform sample adaptive offset (SAO) processing for a first region of an image and (ii) second information indicating whether or not to use, in the SAO processing for the first region, information on SAO processing for a region other than the first region, the context arithmetic coding being arithmetic coding using a variable probability, the SAO processing being offset processing on a pixel value; and performing bypass arithmetic coding to code other information which is information on the SAO processing for the first region and different from the first information or the second information, after the first information and the second information are coded, the bypass arithmetic coding being arithmetic coding using a fixed probability.

公开(公告)号：US20240064325A1

公开(公告)日：2024-02-22

申请号：US18385974

申请日：2023-11-01

Applicant: Sun Patent Trust

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

IPC: H04N19/50 ,  H04N19/31 ,  H04N19/423 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187

CPC classification number: H04N19/50 ,  H04N19/31 ,  H04N19/423 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/44

Abstract: With an image coding method which allows reduction of processing loads, when pictures included in a video signal are classified into layers so as to belong to their respective layers, a picture that belongs to the second layer that is located in a range restricted according to the first layer to which a current picture to be coded that is one of the pictures belongs, is referred to as a reference picture for the current picture, and the current picture is coded based on the reference picture.

公开(公告)号：US20240056597A1

公开(公告)日：2024-02-15

申请号：US18383538

申请日：2023-10-25

Applicant: Sun Patent Trust

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

IPC: H04N19/513 ,  H04N19/52 ,  H04N19/31 ,  H04N19/573

CPC classification number: H04N19/513 ,  H04N19/52 ,  H04N19/31 ,  H04N19/573

Abstract: A moving picture coding apparatus includes: an inter prediction control unit which determines to code a motion vector using, among candidate predicted motion vectors, a candidate predicted motion vector having the least error with relative to a motion vector derived by motion estimation; a picture type determination unit which generates picture type information; a temporal direction vector calculation unit which derives a candidate predicted motion vector in temporal direct; and a co-located reference direction determination unit which generates, for each picture, a co-located reference direction flag.

公开(公告)号：US20230362392A1

公开(公告)日：2023-11-09

申请号：US18221566

申请日：2023-07-13

Applicant: Sun Patent Trust

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

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

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

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”.

公开(公告)号：US20230353775A1

公开(公告)日：2023-11-02

申请号：US18219767

申请日：2023-07-10

Applicant: Sun Patent Trust

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

IPC: H04N19/513 ,  H04N19/70 ,  H04N19/13 ,  H04N19/436 ,  H04N19/169 ,  H04N19/463 ,  H04N19/91 ,  H04N19/52 ,  H04N19/46

CPC classification number: H04N19/521 ,  H04N19/70 ,  H04N19/13 ,  H04N19/436 ,  H04N19/1887 ,  H04N19/463 ,  H04N19/91 ,  H04N19/52 ,  H04N19/46 ,  H04N19/17

Abstract: 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.