公开(公告)号：US20200084470A1

公开(公告)日：2020-03-12

申请号：US16682749

申请日：2019-11-13

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Ryuichi KANOH

IPC: H04N19/537 ,  H04N19/573 ,  H04N19/105 ,  H04N19/157 ,  H04N19/52

Abstract: An encoder includes memory and circuitry. The circuitry: derives a first motion vector in a unit of a prediction block using a first inter frame prediction mode that uses a degree of matching between two reconstructed images of two regions in two difference pictures, the prediction block being obtained by splitting an image included in a video; and performs, in the unit of the prediction block, a first motion compensation process that generates a prediction image by referring to a spatial gradient of luminance in an image generated by performing motion compensation using the first motion vector derived.

公开(公告)号：US20200084457A1

公开(公告)日：2020-03-12

申请号：US16684012

申请日：2019-11-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Ryuichi KANOH

IPC: H04N19/159 ,  H04N19/583 ,  H04N19/105 ,  H04N19/186 ,  H04N19/176

Abstract: An encoder includes memory, and circuitry accessible to the memory. The circuitry accessible to the memory: determines whether OBMC is applicable to generation of a prediction image of a current block, according to whether BIO is to be applied to the generation of the prediction image of the current block; when BIO is to be applied to the generation of the prediction image of the current block, determines that OBMC is not applicable to the generation of the prediction image of the current block, and applies BIO to the generation of the prediction image of the current block without applying OBMC.

公开(公告)号：US20200053386A1

公开(公告)日：2020-02-13

申请号：US16654668

申请日：2019-10-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Ryuichi KANOH ,  Takashi HASHIMOTO

IPC: H04N19/573 ,  H04N19/52 ,  H04N19/176

Abstract: An encoder includes memory and circuitry. The circuitry (i) encodes first control information indicating one mode, (ii) encodes second control information indicating whether it is possible to perform the motion compensation in a unit of a sub-block, (iii) derives the motion vector of the block in the one mode, (iv) determines whether to perform the motion compensation in the unit of the sub-block or the motion compensation in a unit of the block, (v) derives a motion vector of the sub-block and performs the motion compensation in the unit of the sub-block using the motion vector of the sub-block when determining to perform the motion compensation in the unit of the sub-block, and (vi) performs the motion compensation in the unit of the block using the motion vector of the block when determining to perform the motion compensation in the unit of the block.

公开(公告)号：US20200014950A1

公开(公告)日：2020-01-09

申请号：US16572323

申请日：2019-09-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Ryuichi KANOH ,  Chong Soon LIM ,  Ru Ling LIAO ,  Hai Wei SUN ,  Sughosh Pavan SHASHIDHAR ,  Han Boon TEO ,  Jing Ya LI

IPC: H04N19/51 ,  H04N19/182 ,  H04N19/176

Abstract: An image decoder includes circuitry and a memory, wherein the circuitry, in operation, performs a boundary smoothing operation along a boundary between a first partition having a triangular shape and a second partition having a triangular shape that are split from an image block. The boundary smoothing operation includes: first-deriving a first motion vector for the first partition from a first set of motion vector candidates; second-deriving a second motion vector for the second partition from a second set of motion vector candidates; first-predicting first values of a set of pixels of the first partition along the boundary, using the first motion vector; second-predicting second values of the set of pixels of the first partition along the boundary, using the second motion vector; weighting the first values and the second values; and decoding the first partition using the weighted first values and the weighted second values.

公开(公告)号：US20200014947A1

公开(公告)日：2020-01-09

申请号：US16573517

申请日：2019-09-17

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Ryuichi KANOH ,  Chong Soon LIM ,  Ru Ling LIAO ,  Hai Wei SUN ,  Sughosh Pavan SHASHIDHAR ,  Han Boon TEO ,  Jing Ya LI

IPC: H04N19/44 ,  H04N19/513 ,  H04N19/139 ,  H04N19/105 ,  H04N19/176

Abstract: An image decoder includes circuitry and a memory, wherein the circuitry, in operation, performs a boundary smoothing operation along a boundary between a first partition having a triangular shape and a second partition having a triangular shape that are split from an image block. The boundary smoothing operation includes: in response to determining to perform the boundary smoothing operation; first-predicting first values of a set of pixels of the first partition along the boundary, using a first motion vector for the first partition; second-predicting second values of the set of pixels of the first partition along the boundary, using a second motion vector for the second partition; weighting the first values and the second values; and decoding the first partition using the weighted first values and the weighted second values.

公开(公告)号：US20190200036A1

公开(公告)日：2019-06-27

申请号：US16291514

申请日：2019-03-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Shinya KADONO ,  Satoshi KONDO ,  Makoto HAGAI ,  Kiyofumi ABE

IPC: H04N19/52 ,  H04N19/587 ,  G06F1/03 ,  H04N19/30 ,  H04N19/625 ,  H04N21/2743 ,  H04N19/503 ,  H04N19/124 ,  H04N19/105 ,  H04N19/513 ,  H04N19/577 ,  H04N19/43 ,  H04N19/61 ,  H04N19/51

CPC classification number: H04N19/52 ,  G06F1/03 ,  G06F2101/12 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/43 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/577 ,  H04N19/587 ,  H04N19/61 ,  H04N19/625 ,  H04N21/2743

Abstract: A motion vector derivation unit includes a comparison unit for comparing a parameter TR1 for a reference vector with a predetermined value to determine whether it exceeds the predetermined value or not; a switching unit for switching selection between the maximum value of a pre-stored parameter TR and the parameter TR1 according to the comparison result by the comparison unit; a multiplier parameter table (for multipliers); and a multiplier parameter table (for divisors) for associating the parameter TR1 with a value approximate to the inverse value (1/TR1) of this parameter TR1.

公开(公告)号：US20180041756A1

公开(公告)日：2018-02-08

申请号：US15722119

申请日：2017-10-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Kazuhito KIMURA ,  Hideyuki OHGOSE ,  Hiroshi ARAKAWA ,  Koji ARIMURA

IPC: H04N19/102 ,  H04N19/16 ,  H04N19/112 ,  H04N19/46 ,  H04N19/172 ,  H04N19/70 ,  H04N19/577 ,  H04N19/61

CPC classification number: H04N19/102 ,  H04N19/112 ,  H04N19/16 ,  H04N19/172 ,  H04N19/46 ,  H04N19/577 ,  H04N19/61 ,  H04N19/70

Abstract: A video decoding device, in the case where a video of the progressive format is inputted, processes a frame as a picture, in the case where a video of the interlace format is inputted, processes a field as a picture. A video decoding device performs display control corresponding to a format of the both video by analyzing display control information in display control information analyzer. The display control information includes sequence unit display control information which is commonly used in a display process of all pictures that belong to a sequence to be decoded and picture unit display control information which is individually used in a display process of a picture to be decoded. A second code string analyzer acquires each of the sequence unit display control information and the picture unit display control information from an extended information area in units of pictures.

公开(公告)号：US20170302957A1

公开(公告)日：2017-10-19

申请号：US15640840

申请日：2017-07-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Satoshi KONDO ,  Shinya KADONO ,  Makoto HAGAI ,  Kiyofumi ABE

IPC: H04N19/52 ,  H04N19/103 ,  H04N19/583 ,  H04N19/58 ,  H04N19/577 ,  H04N19/573 ,  H04N19/513 ,  H04N19/51 ,  H04N19/46 ,  H04N19/423 ,  H04N19/30 ,  H04N19/61 ,  H04N19/176 ,  H04N19/172 ,  H04N19/16 ,  H04N19/159 ,  H04N19/137 ,  H04N19/136 ,  H04N19/127 ,  H04N19/107 ,  H04N19/105 ,  H04N19/70 ,  H04N19/184

CPC classification number: H04N19/52 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/127 ,  H04N19/136 ,  H04N19/137 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/583 ,  H04N19/61 ,  H04N19/70

Abstract: When a block (MB22) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV23 and MV24, which are used for inter picture prediction of a current picture (P23) to be coded, are determined by scaling a value obtained from averaging the plurality of motion vectors or selecting one of the plurality of the motion vectors.

公开(公告)号：US20170078692A1

公开(公告)日：2017-03-16

申请号：US15358933

申请日：2016-11-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Shinya KADONO ,  Satoshi KONDO ,  Makoto HAGAI ,  Kiyofumi ABE

IPC: H04N19/52 ,  H04N19/43 ,  H04N19/124 ,  H04N19/61 ,  H04N19/30 ,  H04N19/105

CPC classification number: H04N19/52 ,  G06F1/03 ,  G06F2101/12 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/43 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/577 ,  H04N19/587 ,  H04N19/61 ,  H04N19/625 ,  H04N21/2743

Abstract: A motion vector derivation unit includes a comparison unit for comparing a parameter TR1 for a reference vector with a predetermined value to determine whether it exceeds the predetermined value or not; a switching unit for switching selection between the maximum value of a pre-stored parameter TR and the parameter TR1 according to the comparison result by the comparison unit; a multiplier parameter table (for multipliers); and a multiplier parameter table (for divisors) for associating the parameter TR1 with a value approximate to the inverse value (1/TR1) of this parameter TR1.

Abstract translation: 运动矢量导出单元包括比较单元，用于将参考矢量的参数TR1与预定值进行比较，以确定其是否超过预定值; 切换单元，用于根据比较单元的比较结果切换预存储参数TR的最大值与参数TR1之间的选择; 乘数参数表（用于乘数）; 以及用于将参数TR1与接近该参数TR1的反相值（1 / TR1）的值相关联的乘数参数表（用于除数）。

公开(公告)号：US20170048545A1

公开(公告)日：2017-02-16

申请号：US15338754

申请日：2016-10-31

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Satoshi KONDO ,  Shinya KADONO ,  Makoto HAGAI ,  Kiyofumi ABE

IPC: H04N19/52 ,  H04N19/30 ,  H04N19/573 ,  H04N19/159

CPC classification number: H04N19/52 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/127 ,  H04N19/136 ,  H04N19/137 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/583 ,  H04N19/61 ,  H04N19/70

Abstract: When a block (MB22) of which motion vector is referred to in the direct mode contains a plurality of motion vectors, 2 motion vectors MV23 and MV24, which are used for inter picture prediction of a current picture (P23) to be coded, are determined by scaling a value obtained from averaging the plurality of motion vectors or selecting one of the plurality of the motion vectors.