公开(公告)号：US20180262753A1

公开(公告)日：2018-09-13

申请号：US15978697

申请日：2018-05-14

Applicant: Sun Patent Trust

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

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

Abstract: 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：US20180227578A1

公开(公告)日：2018-08-09

申请号：US15944954

申请日：2018-04-04

Applicant: Sun Patent Trust

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

IPC: H04N19/105 ,  H04N19/91 ,  H04N19/463

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/463 ,  H04N19/70 ,  H04N19/82 ,  H04N19/91

Abstract: 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：US20180220155A1

公开(公告)日：2018-08-02

申请号：US15938037

申请日：2018-03-28

Applicant: Sun Patent Trust

Inventor： Virginie DRUGEON ,  Youji SHIBAHARA ,  Takahiro NISHI ,  Hisao SASAI ,  Kyoko TANIKAWA

IPC: H04N19/593 ,  H04N19/44 ,  H04N19/42 ,  H04N19/176 ,  H04N19/11 ,  H04N19/14 ,  H04N19/136 ,  H04N19/182

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/44

Abstract: A spatial prediction method capable of reducing the complexity of spatial prediction includes: detecting an edge (E) overlapping the current block by obtaining a horizontal gradient (Gy) and a vertical gradient (Gx) between pixels within a block adjacent to the current block; calculating an integer slope of the edge; determining, for each pixel position within the current block, a sub-pel position being an intersection between (i) a line that has the integer slope and passes through the pixel position and (ii) a boundary of the adjacent block; and predicting, for each pixel position, a pixel value at the pixel position based on a pixel value interpolated in the sub-pel position, wherein the boundary of the adjacent block is a row or a column that is the closest to the current block, among rows or columns of pixels included in the adjacent block.

公开(公告)号：US20180213240A1

公开(公告)日：2018-07-26

申请号：US15936992

申请日：2018-03-27

Applicant: Sun Patent Trust

Inventor： Chong Soon LIM ,  Viktor WAHADANIAH ,  Sue Mon Thet NAING ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO

IPC: H04N19/184 ,  H04N19/46 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  G06T9/00 ,  H04N19/85 ,  H04N19/593 ,  H04N19/103 ,  H04N19/44 ,  H04N19/426 ,  H04N19/70 ,  H04N19/40 ,  G11B20/10

CPC classification number: H04N19/184 ,  G06T9/00 ,  G06T9/004 ,  G11B20/10 ,  G11B20/10527 ,  H04N19/103 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/40 ,  H04N19/426 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/70 ,  H04N19/85

Abstract: The image coding method is used to code images to generate a coded stream. The image coding method includes: writing, into a sequence parameter set in the coded stream to be generated, a first parameter representing a first bit-depth that is a bit-depth of a reconstructed sample in the images; and writing, into the sequence parameter set, a second parameter which is different from the first parameter and represents a second bit-depth that is a bit-depth of an Intra Pulse Code Modulation (IPCM) sample in the images.

公开(公告)号：US20180199059A1

公开(公告)日：2018-07-12

申请号：US15911756

申请日：2018-03-05

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 ,  Kengo TERADA

IPC: H04N19/58 ,  H04N19/124 ,  H04N19/15 ,  H04N19/433 ,  H04N19/39 ,  H04N19/70 ,  H04N19/105 ,  H04N19/61 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/176

CPC classification number: H04N19/58 ,  H04N19/105 ,  H04N19/124 ,  H04N19/15 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/39 ,  H04N19/433 ,  H04N19/61 ,  H04N19/70

Abstract: An image coding method includes: writing, into a coded bitstream, buffer description defining information for defining a buffer description; constructing a default reference list; reorder pictures included in the default reference list; writing, into the coded bitstream, reference list reordering information for indicating details of the reordering; and coding an image using the buffer description and a reference list resulting from the reordering, and in the reference list reordering information, among the pictures, a picture to be reordered is specified using an index which is used in other processing in the image coding method.

公开(公告)号：US20180124417A1

公开(公告)日：2018-05-03

申请号：US15854104

申请日：2017-12-26

Applicant: Sun Patent Trust

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

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

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46 ,  H04N19/90

Abstract: 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：US20180124401A1

公开(公告)日：2018-05-03

申请号：US15854936

申请日：2017-12-27

Applicant: Sun Patent Trust

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA

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

CPC classification number: H04N19/117 ,  H04N19/122 ,  H04N19/176 ,  H04N19/18 ,  H04N19/513 ,  H04N19/86

Abstract: 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：US20180103267A1

公开(公告)日：2018-04-12

申请号：US15836187

申请日：2017-12-08

Applicant: Sun Patent Trust

Inventor： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO

IPC: H04N19/573 ,  H04N19/31 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/573 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/31 ,  H04N19/593 ,  H04N19/61 ,  H04N19/65 ,  H04N19/70

Abstract: A video encoding method using a plurality of reference pictures includes: selecting whether or not a resilient picture referencing scheme is to be used for encoding video; writing a parameter indicating the selection into a header of an encoded video bitstream; and encoding a picture using inter-picture prediction using a result of the selection.

公开(公告)号：US20180098075A1

公开(公告)日：2018-04-05

申请号：US15819572

申请日：2017-11-21

Applicant: Sun Patent Trust

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

IPC: H04N19/16 ,  H04N19/196 ,  H04N19/463 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593

CPC classification number: H04N19/16 ,  H04N19/11 ,  H04N19/176 ,  H04N19/197 ,  H04N19/463 ,  H04N19/593

Abstract: An image decoding method of decoding, on a block-by-block basis, image data included in a coded stream includes: deriving candidates for an intra prediction mode to be used for intra prediction for a decoding target block, the number of the candidates constantly being a plural number; obtaining, from the coded stream, an index for identifying one of the derived candidates for the intra prediction mode; and determining, based on the obtained index, one of the derived candidates for the intra prediction mode as the intra prediction mode to be used for intra prediction for the decoding target block.

公开(公告)号：US20180048891A1

公开(公告)日：2018-02-15

申请号：US15794385

申请日：2017-10-26

Applicant: Sun Patent Trust

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

IPC: H04N19/117 ,  H04N19/61 ,  H04N19/136 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/61

Abstract: A decoding method includes: predicting a current block in an image using a reference block, to generate a prediction block; and generating a reconstructed block using the prediction block, wherein the generating includes: filtering for a boundary between the reconstructed block and a decoded neighboring block, using a first filter strength set using first prediction information for prediction of the current block and second prediction information for prediction of the decoded neighboring block; filtering for the boundary using a second filter strength set without using the second prediction information of the current block and the decoded neighboring block; and switching whether to execute the second filtering, based on the boundary, wherein the first filtering is in-loop filtering in which a filtered reconstructed block is used as a reference block for another block, and the second filtering is post filtering outside the loop.