公开(公告)号：US09124897B2

公开(公告)日：2015-09-01

申请号：US14534425

申请日：2014-11-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

IPC: H04N19/176 ,  H04N19/52 ,  H04N19/56 ,  H04N19/50 ,  H04N19/51 ,  H04N19/513 ,  H04N19/61 ,  H04N19/593 ,  H04N19/517 ,  H04N19/577 ,  H04N19/137 ,  H04N19/139 ,  H04N19/537 ,  H04N19/533

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/521 ,  H04N19/533 ,  H04N19/537 ,  H04N19/56 ,  H04N19/577 ,  H04N19/593 ,  H04N19/61

Abstract: A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector.

公开(公告)号：US09083980B2

公开(公告)日：2015-07-14

申请号：US14602665

申请日：2015-01-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

IPC: H04N11/02 ,  H04N19/513 ,  H04N19/583 ,  H04N19/573

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：US08941514B2

公开(公告)日：2015-01-27

申请号：US14070857

申请日：2013-11-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai ,  Kiyofumi Abe

IPC: H03M7/40 ,  H04N19/89 ,  H04N19/60 ,  H04N19/176 ,  H04N19/134 ,  H04N19/61 ,  G06T9/00 ,  H04N19/136 ,  H04N19/69 ,  H04N19/13 ,  H03M7/46 ,  H04N19/93 ,  G11B20/14 ,  H03M5/14 ,  H04N19/18 ,  H04N19/162

CPC classification number: G06T9/005 ,  G11B20/1426 ,  H03M5/145 ,  H03M7/40 ,  H03M7/46 ,  H04N19/13 ,  H04N19/134 ,  H04N19/136 ,  H04N19/162 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/61 ,  H04N19/69 ,  H04N19/89 ,  H04N19/93

Abstract: An image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients obtained by quantizing frequency components of an image signal to a variable length coding process by using a run value Run that indicates the number of successive zero coefficients and a level value Lev that indicates a value of a non-zero coefficient following the zero coefficients. The run-length encoding unit RLE1 includes a reordering unit Lreodr for reordering level values Lev; a variable length coder LVLC for coding reordered level values ROLev by using a code table selected according to the value of a quantization parameter QP; a reordering unit Rreodr for reordering run values Run from high frequency component of the quantized coefficients to low frequency component; and a variable length coder RVLC for coding reordered run values RORun by using a code table selected according to the number of already-processed run values.

Abstract translation: 图像编码装置提供游程长度编码单元RLE1，其通过使用指示连续零系数的数量的运行值Run和级别值Lev来对通过将图像信号的频率分量量化为可变长度编码处理而获得的量化系数 其表示零系数之后的非零系数的值。 游程长度编码单元RLE1包括用于重新排列水平值Lev的重排序单元Lreodr; 可变长度编码器LVLC，用于通过使用根据量化参数QP的值选择的代码表来对重新排序的电平值ROLev进行编码; 用于重新排序运行值的重新排序单元Rreodr从量化系数的高频分量运行到低频分量; 以及可变长度编码器RVLC，用于通过使用根据已经处理的运行值的数量选择的代码表来对重排序的运行值RORun进行编码。

公开(公告)号：US08902987B2

公开(公告)日：2014-12-02

申请号：US13966527

申请日：2013-08-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

IPC: H04N7/32 ,  H04N19/50 ,  H04N19/51 ,  H04N19/56 ,  H04N19/593 ,  H04N19/583 ,  H04N19/61 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/521 ,  H04N19/533 ,  H04N19/537 ,  H04N19/56 ,  H04N19/577 ,  H04N19/593 ,  H04N19/61

Abstract: A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector.

公开(公告)号：US08885719B2

公开(公告)日：2014-11-11

申请号：US13966522

申请日：2013-08-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

IPC: H04N7/32 ,  H04N19/50 ,  H04N19/61 ,  H04N19/56 ,  H04N19/51 ,  H04N19/583 ,  H04N19/577 ,  H04N19/593

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/521 ,  H04N19/533 ,  H04N19/537 ,  H04N19/56 ,  H04N19/577 ,  H04N19/593 ,  H04N19/61

Abstract: A motion vector coding unit executes processing including a neighboring block specification step of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step of coding the motion vector of the current block using the predictive motion vector.

公开(公告)号：US08861607B2

公开(公告)日：2014-10-14

申请号：US14046058

申请日：2013-10-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Shinya Kadono ,  Satoshi Kondo ,  Kiyofumi Abe

IPC: H04N7/12 ,  H04N19/51 ,  H04N19/139 ,  H04N19/61 ,  H04N19/169 ,  H04N19/56 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/122 ,  H04N19/137 ,  H04N19/139 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52 ,  H04N19/521 ,  H04N19/557 ,  H04N19/56 ,  H04N19/57 ,  H04N19/577 ,  H04N19/583 ,  H04N19/593 ,  H04N19/61

Abstract: A picture coding apparatus includes a motion vector estimation unit and a motion compensation unit. The motion vector estimation unit selects one method for deriving a motion vector of a block to be motion-compensated, depending on a motion vector of a block located in a corner of a decoded macroblock from among a group of blocks that compose the decoded macroblock corresponding to the current macroblock to be coded and determines the motion vector derived by the selected method for derivation to be a candidate of the motion vector of the current macroblock to be coded. The motion compensation unit generates a predictive image of the block to be motion-compensated based on the estimated motion vector.

公开(公告)号：US12273555B2

公开(公告)日：2025-04-08

申请号：US18598487

申请日：2024-03-07

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N11/02 ,  H04N19/176 ,  H04N19/186 ,  H04N19/52

Abstract: An encoder includes circuitry and memory connected to the circuitry. In operation, the circuitry: stores MV information and correction processing information into a FIFO buffer for an HMVP mode in association, the MV information being derived for a processed block and correction processing information being related to correction processing of a prediction image of the processed block; registers, in a prediction candidate list for a merge mode, one or more prediction candidates each being a combination of MV information and correction processing information, the prediction candidates including a prediction candidate which is a combination of the motion vector information and the correction processing information stored in the FIFO buffer; and selects a prediction candidate from the prediction candidate list when a current block is to be processed in the merge mode, and performs correction processing of a prediction image of the current block, based on the correction processing information.

公开(公告)号：US12262038B2

公开(公告)日：2025-03-25

申请号：US18419347

申请日：2024-01-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Che-Wei Kuo ,  Chong Soon Lim ,  Han Boon Teo ,  Jing Ya Li ,  Hai Wei Sun ,  Chu Tong Wang ,  Tadamasa Toma ,  Takahiro Nishi ,  Kiyofumi Abe ,  Yusuke Kato

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/117 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/46

Abstract: A decoder includes circuitry which, in operation, parses a first flag indicating whether a CCALF (cross component adaptive loop filtering) process is enabled for a first block located adjacent to a left side of a current block; parses a second flag indicating whether the CCALF process is enabled for a second block located adjacent to an upper side of the current block; determines a first index associated with a color component of the current block; and derives a second index indicating a context model, using the first flag, the second flag, and the first index. The circuitry, in operation, performs entropy decoding of a third flag indicating whether the CCALF process is enabled for the current block, using the context model indicated by the second index; and performs the CCALF process on the current block in response to the third flag indicating the CCALF process is enabled for the current block.

公开(公告)号：US20250097475A1

公开(公告)日：2025-03-20

申请号：US18968346

申请日：2024-12-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Jingying GAO ,  Han Boon Teo ,  Chong Soon Lim ,  Praveen Kumar Yadav ,  Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/80 ,  H04N19/167 ,  H04N19/17 ,  H04N19/70 ,  H04N19/85

Abstract: An image encoder includes circuitry, and a memory connected to the circuitry. The circuitry, in operation, determines a first region and a second region in an input image, generates a first image from the input image by applying a first prefilter to the first region and a second prefilter to the second region, determines a first parameter relating to the first region and a second parameter relating to the second region, and generates a bitstream by encoding the first region based on the first parameter, encoding the second region based on the second parameter, encoding the first prefilter or a first postfilter corresponding to the first prefilter, and encoding the second prefilter or a second postfilter corresponding to the second prefilter.

公开(公告)号：US12250384B2

公开(公告)日：2025-03-11

申请号：US18234504

申请日：2023-08-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Jing Ya Li ,  Ru Ling Liao ,  Chong Soon Lim ,  Han Boon Teo ,  Hai Wei Sun ,  Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/117 ,  H04N19/159 ,  H04N19/182

Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of gradient values in first and second ranges; derives, as a first parameter, a total sum of absolute values of sums of gradient values derived respectively for pairs of relative pixel positions; derives a pixel difference value between pixel values in the first and second ranges; inverts or maintains a plus or minus sign of the pixel difference value, according to a plus or minus sign of the sum of the gradient values indicating the sum of the gradient values in the first and second ranges; derives, as a second parameter, a total sum of pixel difference values each having the plus or minus sign inverted or maintained, the pixel difference values derived respectively for the relative pixel positions; and generates a prediction image using the first and second parameters.