公开(公告)号：US20140362929A1

公开(公告)日：2014-12-11

申请号：US14470233

申请日：2014-08-27

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04N19/44 ,  H04N19/42 ,  H04N19/46

CPC classification number: H04N19/15 ,  G06T9/00 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/70

Abstract: A decoding method of decoding encoded data per unit from among units included in a picture is provided. The decoding method decodes a first flag which indicates whether a removal time of the encoded data from a buffer is set per unit. The buffer is for storing the encoded data. The image decoding method further decodes a second flag indicating whether an interval between removal times of the units is constant when the removal time is set per unit. The image decoding method removes the encoded data from the buffer per unit and at an interval according to the second flag, and decodes the removed encoded data.

Abstract translation: 提供了从包括在图像中的单元中的每单位编码数据进行解码的解码方法。 解码方法解码指示是否每单位设置来自缓冲器的编码数据的去除时间的第一标志。 缓冲区用于存储编码数据。 图像解码方法进一步解码指示当每单位设置移除时间时单位的去除时间间隔是否恒定的第二标志。 图像解码方法根据第二标志从每个单元和间隔的缓冲器中去除编码数据，并对所移除的编码数据进行解码。

公开(公告)号：US20250168332A1

公开(公告)日：2025-05-22

申请号：US19025525

申请日：2025-01-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Che-Wei KUO ,  Chong Soon LIM ,  Jing Ya LI ,  Han Boon TEO ,  Hai Wei SUN ,  Chu Tong WANG ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82

Abstract: An encoder includes circuitry which generates a first coefficient value by applying a CCALF process to a first reconstructed image sample of a luma component; generates a second coefficient value by applying an ALF process to a second reconstructed image sample of a chroma component; generates a third coefficient value by adding the first coefficient value to the second coefficient value; and encodes a third reconstructed image sample of the chroma component using the third coefficient value. The circuitry writes a first parameter into a sequence parameter set; writes a second parameter into a parameter set of a picture in response to a value of the first parameter being 1; writes a third parameter into a slice header in response to the value of the first parameter being 1; and writes a fourth parameter into a coding tree unit in response to a value of the third parameter being 1.

公开(公告)号：US20250133231A1

公开(公告)日：2025-04-24

申请号：US19002390

申请日：2024-12-26

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA

IPC: H04N19/52 ,  H04N19/117 ,  H04N19/176

Abstract: An encoder that encodes a video includes circuitry and memory connected to the circuitry. In operation, the circuitry: generates a prediction image on a per sub-block basis; and when a sub-block size is 4x4, applies a boundary smoothing process only to sub-block boundaries having boundary positions that are integer multiples of 8.

公开(公告)号：US20250133207A1

公开(公告)日：2025-04-24

申请号：US19002158

申请日：2024-12-26

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/12 ,  H04N19/154 ,  H04N19/157 ,  H04N19/61

Abstract: An encoder that encodes a video includes a processor and memory. Using the memory, the processor: derives a prediction error of an image included in the video, by subtracting a prediction image of the image from the image; determines a secondary transform basis based on a primary transform basis, the primary transform basis being a transform basis for a primary transform to be performed on the prediction error, the secondary transform basis being a transform basis for a secondary transform to be performed on a result of the primary transform; performs the primary transform on the prediction error using the primary transform basis; performs the secondary transform on a result of the primary transform using the secondary transform basis; performs quantization on a result of the secondary transform; and encodes a result of the quantization as data of the image.

公开(公告)号：US20250119573A1

公开(公告)日：2025-04-10

申请号：US18950959

申请日：2024-11-18

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/513 ,  H04N19/119 ,  H04N19/176 ,  H04N19/96

Abstract: An encoder includes circuitry and memory connected to the circuitry. In operation, the circuitry corrects a base motion vector using a correction value in a fixed direction; and encodes a current partition by using the corrected base motion vector corrected. The correction value is specified by an index indicating one of correction values included in a table. The table is selected from among a plurality of tables, wherein the correction values in one of the plurality of tables have different increments from the correction values in another one of the plurality of tables.

公开(公告)号：US20250097476A1

公开(公告)日：2025-03-20

申请号：US18958923

申请日：2024-11-25

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Jing Ya LI ,  Han Boon TEO ,  Chong Soon LIM ,  Hai Wei SUN ,  Che-Wei KUO ,  Chu Tong WANG ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC: H04N19/82 ,  H04N19/107 ,  H04N19/176 ,  H04N19/186

Abstract: A decoder includes memory and a processor coupled to the memory and configured to: generate a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component; clip the first coefficient value such that the clipped first coefficient value is within a first range from −27 to 27−1; generate a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component; clip the second coefficient value such that the clipped second coefficient value is within a second range different from the first range; generate a third coefficient value by adding the clipped first coefficient value to the clipped second coefficient value; and generate a third reconstructed image sample of the chroma component using the third coefficient value.

公开(公告)号：US20250071281A1

公开(公告)日：2025-02-27

申请号：US18946489

申请日：2024-11-13

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/126 ,  H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/30 ,  H04N19/60

Abstract: Various embodiments provide an encoder that performs an up-conversion and a down-conversion on a first quantization matrix to generate a second quantization matrix, and quantizes transform coefficients of a current block using the second quantization matrix. The first quantization matrix has a first number of rows and a first number of columns equal to the first number of rows, and the second quantization matrix has a second number of rows and a second number of columns different from the second number of rows. In the up-conversion, the circuitry generates the second quantization matrix such that one of the second number of rows or the second number of columns is larger than the first number of rows. In the down-conversion, the circuitry generates the second quantization matrix such that the other of the second number of rows or the second number of columns is smaller than the first number of rows.

公开(公告)号：US20250071272A1

公开(公告)日：2025-02-27

申请号：US18945959

申请日：2024-11-13

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: H04N19/117 ,  H04N19/44 ,  H04N19/86

Abstract: An image decoding device includes circuitry and a memory connected to the circuitry, in which in operation, the circuitry acquires a first image and a plurality of first filter sets by decoding a bitstream, generates and outputs a second image by selecting one first filter set from the plurality of first filter sets based on usage information indicating an image usage, and applying the first filter set having been selected to the first image.

公开(公告)号：US20250039393A1

公开(公告)日：2025-01-30

申请号：US18910733

申请日：2024-10-09

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: An image encoder or decoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, predicts a first set of samples for a first partition of a current picture with one or more motion vectors including a first motion vector and predicts a second set of samples for a first portion of the first partition with one or more motion vectors from a second partition different from the first partition. The samples of the first set of samples of the first portion of the first partition and of the second set of samples of the first portion of the first partition are weighted. A motion vector for the first portion of the first partition is stored which is based on one or both of the first motion vector and the second motion vector. The first partition is encoded or decoded using at least the weighted samples of the first portion of the first partition.

公开(公告)号：US20250030868A1

公开(公告)日：2025-01-23

申请号：US18908088

申请日：2024-10-07

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: An image encoder or decoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, predicts a first set of samples for a first partition of a current picture with one or more motion vectors including a first motion vector and predicts a second set of samples for a first portion of the first partition with one or more motion vectors from a second partition different from the first partition. The samples of the first set of samples of the first portion of the first partition and of the second set of samples of the first portion of the first partition are weighted. A motion vector for the first portion of the first partition is stored which is based on one or both of the first motion vector and the second motion vector. The first partition is encoded or decoded using at least the weighted samples of the first portion of the first partition.