公开(公告)号：US20250063168A1

公开(公告)日：2025-02-20

申请号：US18934910

申请日：2024-11-01

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/119 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/96

Abstract: An image encoder/decoder includes circuitry and a memory coupled to the circuitry. When a geometry of a block of a picture satisfies a first condition, the circuitry splits the block of the picture into sub blocks having a first set of geometries. When the geometry of the block does not satisfy the first condition, the circuitry splits the block of the picture into sub blocks having a second set of geometries, the second set of geometries being different from the first set of geometries. The circuitry encodes/decodes the sub blocks of the block.

公开(公告)号：US20250047906A1

公开(公告)日：2025-02-06

申请号：US18924355

申请日：2024-10-23

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Virginie DRUGEON ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC: H04N19/70

Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry: encodes a video using (i) a decoding parameter set (DPS) which is identified based on presence of the DPS in a bitstream and (ii) a sequence parameter set (SPS) which is identified based on an identifier for the SPS.

公开(公告)号：US20250030846A1

公开(公告)日：2025-01-23

申请号：US18904357

申请日：2024-10-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Virginie DRUGEON ,  Klyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA

IPC: H04N19/11 ,  H04N19/119 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/593

Abstract: A decoding method includes: determining two partitions in a current block according to a geometric partitioning mode; deriving an angular intra prediction mode from the geometric partitioning mode using a mapping relation between geometric partitioning modes and angular intra prediction modes; and predicting a first partition among the two partitions according to the angular intra prediction mode, in which in the deriving of the angular intra prediction mode, when a shape of the current block is square, a first mapping relation is used to derive the angular intra prediction mode, and when the shape of the current block is not square, a second mapping relation different from the first mapping relation is used to derive the angular intra prediction mode.

公开(公告)号：US20240422318A1

公开(公告)日：2024-12-19

申请号：US18813469

申请日：2024-08-23

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Takahiro NISHI ,  Toshiyasu SUGIO ,  Noritaka IGUCHI

IPC: H04N19/13 ,  H04N19/597 ,  H04N19/91

Abstract: A decoding method includes: determining a numerical range based on whether intra prediction or inter prediction is to be used to decode encoded first information of a current three-dimensional point; and switching a context between a first context and a second context to entropy-decode the encoded first information, based on whether an absolute value of decoded second information of the current three-dimensional point is included in the numerical range determined.

公开(公告)号：US20240397047A1

公开(公告)日：2024-11-28

申请号：US18795438

申请日：2024-08-06

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/119 ,  H04N19/176

Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry in operation: determines whether the shape of a current chroma block to be split satisfies a first condition; generates one or more second candidates for a block partitioning method by eliminating one or more predetermined candidates from a plurality of first candidates for a block partitioning method when the current chroma block satisfies the first condition; selects a block partitioning method from among the one or more second candidates; and splits the current chroma block according to the block partitioning method selected.

公开(公告)号：US20240333967A1

公开(公告)日：2024-10-03

申请号：US18743382

申请日：2024-06-14

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/52 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/52 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176

Abstract: An encoder includes circuitry and memory. Using the memory, the circuitry, in inter prediction processing: derives a first motion vector of a current block to be processed, using a motion vector of a previous block which has been previously processed; derives a second motion vector of the current block by performing motion estimation in the vicinity of the first motion vector; and generates a prediction image of the current block by performing motion compensation using the second motion vector.

公开(公告)号：US20240314311A1

公开(公告)日：2024-09-19

申请号：US18671457

申请日：2024-05-22

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/18 ,  H04N19/186 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/18 ,  H04N19/186 ,  H04N19/82

Abstract: An encoder includes circuitry and memory. The circuitry, in operation, generates a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component. The circuitry generates a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component. The circuitry 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. In the CCALF process, in response to a coordinate of the second reconstructed image sample being (x, y), coordinates of the first reconstructed image samples are (2x, 2y−1), (2x−1, 2y), (2x, 2y), (2x+1, 2y), (2x−1, 2y+1), (2x, 2y+1), (2x+1, 2y+1), and (2x, 2y+2).

公开(公告)号：US20240314310A1

公开(公告)日：2024-09-19

申请号：US18669047

申请日：2024-05-20

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/18 ,  H04N19/186 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/18 ,  H04N19/186 ,  H04N19/82

Abstract: An encoder includes circuitry and memory. The circuitry, in operation, generates a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component. The circuitry generates a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component. The circuitry 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. In the CCALF process, in response to a coordinate of the second reconstructed image sample being (x, y), coordinates of the first reconstructed image samples are (2x, 2y−1), (2x−1, 2y), (2x, 2y), (2x+1, 2y), (2x−1, 2y+1), (2x, 2y+1), (2x+1, 2y+1), and (2x, 2y+2).

公开(公告)号：US20240291971A1

公开(公告)日：2024-08-29

申请号：US18656972

申请日：2024-05-07

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/107 ,  H04N19/176

CPC classification number: H04N19/107 ,  H04N19/176

Abstract: An image encoder includes: circuitry; and a memory coupled to the circuitry. The circuitry, in operation: calculates first values of a current block using intra prediction, the intra prediction being limited to planar mode, the planar mode using multiple reference pixels for each pixel location of the current block; calculates second values of the current block using inter prediction; calculates third values of the current block by weighting the first values and the second values; and encodes the current block using the third values, and in the calculating of the third values, a first weight is applied to the first values and a second weight is applied to the second values, the second weight being different from the first weight.

公开(公告)号：US20240275963A1

公开(公告)日：2024-08-15

申请号：US18628452

申请日：2024-04-05

Applicant: Panasonic Intellectual Property Corporation of America

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

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

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/186 ,  H04N19/82

Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry, in operation, generates a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component, generates a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component, and clips the second coefficient value. The circuitry generates a third coefficient value by adding the first coefficient value to the clipped second coefficient value, and clips the third coefficient value. The circuitry encodes a third reconstructed image sample of the chroma component using the clipped third coefficient value.