公开(公告)号：US10595023B2

公开(公告)日：2020-03-17

申请号：US16008533

申请日：2018-06-14

申请人： Sun Patent Trust

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

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

摘要： An image decoding method and apparatus derive: a first candidate having a first motion vector; 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; and 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. The second and third motion vectors are first and second zero vectors. The first and second reference picture index values are different. A coded index attached to the bitstream is decoded using a maximum number of candidates including the first, second, and third candidates. The coded index indicates one candidate of the candidates. The candidate is selected based on the coded index and is used for decoding a current block.

公开(公告)号：US10567792B2

公开(公告)日：2020-02-18

申请号：US16027589

申请日：2018-07-05

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 ,  H04N19/51 ,  H04N19/52 ,  H04N19/58 ,  H04N19/61 ,  H04N19/172 ,  H04N19/176 ,  H04N19/513

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：US10560716B2

公开(公告)日：2020-02-11

申请号：US16233470

申请日：2018-12-27

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： H04N19/52 ,  H04N19/105 ,  H04N19/159 ,  H04N19/46 ,  H04N19/503 ,  H04N19/172 ,  H04N19/176

摘要： A moving picture coding includes: coding a first flag indicating whether or not temporal motion vector prediction is used; when the first flag indicates that the temporal motion vector prediction is used: coding a first parameter for calculating the temporal predictive motion vector; wherein when the first flag indicates that the temporal motion vector prediction is not used, the first parameter is not coded.

公开(公告)号：US10244267B2

公开(公告)日：2019-03-26

申请号：US15897399

申请日：2018-02-15

申请人： Sun Patent Trust

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

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

摘要： 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：US10237553B2

公开(公告)日：2019-03-19

申请号：US15854936

申请日：2017-12-27

申请人： Sun Patent Trust

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara

IPC分类号： H04N19/117 ,  H04N19/176 ,  H04N19/122 ,  H04N19/18 ,  H04N19/86 ,  H04N19/513

摘要： An image coding method for coding an input image per block to generate a coded image signal includes: predicting for each prediction unit which is an area obtained by partitioning a target block to generate a prediction image of the target block; comparing a transform unit which is an area obtained by partitioning the target block and is a processing unit for frequency transform with the prediction unit, to detect part of a boundary of the prediction unit, the boundary being located within the transform unit; performing boundary filtering on the detected part of the boundary in the generated prediction image; calculating a difference between a filtered prediction image and the input image to generate a difference image of the target block; and performing frequency transform on the difference image for each transform unit.

公开(公告)号：US10212431B2

公开(公告)日：2019-02-19

申请号：US15681650

申请日：2017-08-21

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 ,  H04N19/12 ,  H04N19/44 ,  H04N19/436 ,  H04N19/127

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：US10154270B2

公开(公告)日：2018-12-11

申请号：US15797155

申请日：2017-10-30

申请人： Sun Patent Trust

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

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

摘要： 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：US09998736B2

公开(公告)日：2018-06-12

申请号：US15611002

申请日：2017-06-01

申请人： Sun Patent Trust

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

IPC分类号： H04N19/46 ,  H04N19/107 ,  H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/172 ,  H04N19/61 ,  H04N19/137 ,  H04N19/567 ,  H04N19/573 ,  H04N19/58 ,  H04N19/577 ,  H04N19/139 ,  H04N19/52 ,  H04N19/124 ,  H04N19/70 ,  H04N19/51

CPC分类号： H04N19/107 ,  H04N19/105 ,  H04N19/124 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/52 ,  H04N19/56 ,  H04N19/567 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

摘要： An image coding method includes: adding, to a candidate list, a first adjacent motion vector as a candidate for a predicted motion vector to be used for coding the current motion vector; selecting the predicted motion vector from the candidate list; and coding the current motion vector, wherein in the adding, the first adjacent motion vector indicating a position in a first reference picture included in a first reference picture list is added to the candidate list for the current motion vector indicating a position in a second reference picture included in a second reference picture list.

公开(公告)号：US09930347B2

公开(公告)日：2018-03-27

申请号：US15488891

申请日：2017-04-17

申请人： Sun Patent Trust

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

IPC分类号： G06K9/36 ,  H04N19/176 ,  H04N19/60 ,  H04N19/186

CPC分类号： H04N19/176 ,  G06T9/007 ,  H04N19/122 ,  H04N19/136 ,  H04N19/186 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

摘要： 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：US09872036B2

公开(公告)日：2018-01-16

申请号：US15219525

申请日：2016-07-26

申请人： Sun Patent Trust

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/503 ,  H04N19/577 ,  H04N19/573 ,  H04N19/70 ,  H04N19/107 ,  H04N19/109

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/107 ,  H04N19/109 ,  H04N19/503 ,  H04N19/52 ,  H04N19/56 ,  H04N19/573 ,  H04N19/577 ,  H04N19/70

摘要： By the moving picture coding method and the moving picture decoding method, it is possible to improve coding efficiency. The moving picture coding apparatus includes a merge block candidate calculation unit that (i) specifies merge block candidates at merge mode, by using colpic information such as motion vectors and reference picture index values of neighbor blocks of a current block to be coded and a motion vector and the like of a collocated block of the current block which are stored in a colPic memory, and (ii) generates a combined merge block by using the merge block candidates.