公开(公告)号：US20240031591A1

公开(公告)日：2024-01-25

申请号：US18478519

申请日：2023-09-29

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/51 ,  H04N19/433

CPC classification number: H04N19/51 ,  H04N19/433

Abstract: An encoding method is provided for encoding a picture to generate a coded stream. The encoding method includes: generating a first prediction image of a current block included in a current picture by referring to a first region included in a reference picture different from the current picture; operating a bi-directional optical flow process to generate a second prediction image based on the first prediction image by referring to a second region included in the first region; and encoding the current block based on the second prediction image.

公开(公告)号：US20240031586A1

公开(公告)日：2024-01-25

申请号：US18373406

申请日：2023-09-27

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/30 ,  H04N19/70 ,  H04N19/172 ,  H04N19/563

CPC classification number: H04N19/30 ,  H04N19/70 ,  H04N19/172 ,  H04N19/563

Abstract: A decoding method includes: decoding, from a bitstream, cropping information indicating an amount of cropping corresponding to an amount of padding of a first subpicture that is a subpicture (i) which is among a plurality of subpictures constituting a picture, (ii) in which at least one end of the subpicture is included in at least one end of the picture, (iii) to which at least one subpicture is adjacent on a side opposite to the at least one end of the subpicture, and (iv) which is padded so that a size of the subpicture reaches an integer multiple of a preconfigured coding unit size in at least one direction; decoding the first subpicture from the bitstream; and cropping the first subpicture according to the amount of cropping.

公开(公告)号：US20240031581A1

公开(公告)日：2024-01-25

申请号：US18376618

申请日：2023-10-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Masato OHKAWA ,  Hideo SAITOU ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Ryuichi KANOH

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

CPC classification number: H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

Abstract: An encoder which encodes a current block of a picture includes a processor and memory. Using the memory, the processor: determines whether intra prediction is to be used for the current block; and when it is determined that intra prediction is to be used for the current block, generates first transform coefficients by performing first transform of residual signals of the current block using a first transform basis; quantizes the first transform coefficients when an intra prediction mode for the current block is a determined mode and the first transform basis is different from a determined transform basis; and generates second transform coefficients by performing second transform of the first transform coefficients using a second transform basis, and quantizes the second transform coefficients, when the intra prediction mode for the current block is not the determined mode or when the first transform basis matches the determined transform basis.

公开(公告)号：US20240015322A1

公开(公告)日：2024-01-11

申请号：US18473027

申请日：2023-09-22

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

CPC classification number: H04N19/521 ,  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：US20240007644A1

公开(公告)日：2024-01-04

申请号：US18467531

申请日：2023-09-14

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 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132 ,  H04N19/119

CPC classification number: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132 ,  H04N19/119

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：US20240007621A1

公开(公告)日：2024-01-04

申请号：US18368140

申请日：2023-09-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Masato OHKAWA ,  Hideo SAITOU ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Ryuichi KANOH

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

Abstract: An encoder that encodes a current block in a picture includes circuitry and memory. Using the memory, the circuitry: determines whether to use intra prediction for the current block; and when determining to use intra prediction, (i) performs a first transform on a residual signal of the current block using a first transform basis to generate first transform coefficients; and (ii-1) performs a second transform on the first transform coefficients using a second transform basis to generate second transform coefficients and quantizes the second transform coefficients, when an intra prediction mode of the current block is a predetermined mode or when the first transform basis is same as a predetermined transform basis; and (ii-2) quantizes the first transform coefficients without performing the second transform when the intra prediction mode is different from the predetermined mode and the first transform basis is different from the predetermined transform basis.

公开(公告)号：US20230388549A1

公开(公告)日：2023-11-30

申请号：US18231933

申请日：2023-08-09

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Masato OHKAWA ,  Hideo SAITOU ,  Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Yusuke KATO

IPC: H04N19/60 ,  H04N19/186 ,  H04N19/119 ,  H04N19/184 ,  H04N19/30 ,  H04N19/17 ,  H04N19/12 ,  H04N19/112 ,  H04N19/16

CPC classification number: H04N19/649 ,  H04N19/186 ,  H04N19/119 ,  H04N19/184 ,  H04N19/30 ,  H04N19/17 ,  H04N19/12 ,  H04N19/112 ,  H04N19/16

Abstract: Provided is an encoder including: circuitry; and memory coupled to the circuitry. In operation, the circuitry: performs a mapping process of Luma Mapping with Chroma Scaling (LMCS) for transforming a first pixel value space applied to a luma display image signal into a second pixel value space applied to a luma encoding process signal, using line segments forming a transform curve, each of which corresponds to a different one of sections obtained by partitioning the first pixel value space; and encodes an image, and in the performing of the LMCS, the circuitry determines the transform curve so that among boundary values in the second pixel value space, a first value obtained by dividing a boundary value by a base width defined according to a bit depth of the image is not equal to a second value obtained by dividing another boundary value by the base width.

公开(公告)号：US20230351763A1

公开(公告)日：2023-11-02

申请号：US18218251

申请日：2023-07-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Takahiro NISHI ,  Tadamasa TOMA ,  Toshiyasu SUGIO

IPC: G06T15/20 ,  G06V20/64 ,  G06T7/70 ,  G06V20/56 ,  G06V10/46

CPC classification number: G06V20/56 ,  G06T7/70 ,  G06T15/20 ,  G06V10/462 ,  G06V20/647 ,  G06T2207/30252

Abstract: A data generator which achieves further improvement includes circuitry and memory connected to the circuitry. The circuitry, in operation: obtains sensing data from each of a plurality of moving bodies that includes a plurality of sensors, the sensing data being configured based on results of sensing by the plurality of sensors; and generates synthesized data by mapping the sensing data of the moving body into a virtual space, and when generating the synthesized data, determines a position of the sensing data to be mapped into the virtual space, based at least on a position of the moving body in a real space corresponding to the sensing data.

公开(公告)号：US20230345035A1

公开(公告)日：2023-10-26

申请号：US18217840

申请日：2023-07-03

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/513 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176

Abstract: Provided is an encoder including circuitry and memory coupled to the circuitry. A prediction mode for a current block is an affine mode, and in operation, the circuitry: derives a base motion vector which is a motion vector to be used in a prediction process for the current block, and is a motion vector at an affine-mode control point in the current block; derives a first motion vector different from the base motion vector; derives a motion vector difference based on a difference between the base motion vector and the first motion vector; determines whether the motion vector difference is greater than a threshold; if so, modifies a second motion vector different from the base motion vector and the first motion vector, and if not, does not modify the second motion vector; and encodes the current block using the second motion vector modified or the second motion vector not modified.

公开(公告)号：US20230344996A1

公开(公告)日：2023-10-26

申请号：US18208380

申请日：2023-06-12

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/169 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/188 ,  H04N19/82

Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry: encodes information for deriving a parameter into a header of a bitstream; filters reconstructed samples in a first image using a filtering process, to generate a second image; determines whether the parameter has a predefined value; encodes a third image using the second image when the parameter has the predefined value; and encodes the third image using the first image when the parameter does not have the predefined value.