公开(公告)号：US20250168371A1

公开(公告)日：2025-05-22

申请号：US19027288

申请日：2025-01-17

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/30 ,  H04N19/70

Abstract: An encoder includes memory and circuitry coupled to the memory. The circuitry is configured to: generate an encoded bitstream that includes a multi-layer structure; and store, in the encoded bitstream, a syntax element having a value indicating that a layer in the multi-layer structure to be output by a decoder is arbitrarily specified, the syntax element defining that at least one layer is to be output from among layers arbitrarily specifiable by the decoder.

公开(公告)号：US20250159134A1

公开(公告)日：2025-05-15

申请号：US19019741

申请日：2025-01-14

Applicant: Panasonic Intellectual Property Corporation of America

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

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

Abstract: An encoder includes memory and circuitry. The circuitry, using the memory, (i) selects a mode from among a plurality of modes each for deriving a motion vector, and derives a motion vector for a current block via the selected mode, and (ii) performs inter prediction encoding on the current block, using the derived motion vector, via one of a skip mode and a non-skip mode different from the skip mode. The plurality of modes include a plurality of first modes each for predicting the motion vector for the current block based on an encoded block neighboring the current block without encoding information indicating a motion vector into a stream. When a second mode included in the plurality of first modes is selected, the current block is encoded via the non-skip mode regardless of presence or absence of a residual coefficient.

公开(公告)号：US20250113051A1

公开(公告)日：2025-04-03

申请号：US18979934

申请日：2024-12-13

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/52

Abstract: An encoder which includes circuitry and memory. Using the memory, the circuitry generates a list which includes candidates for a first motion vector for a first partition. The list has a maximum list size and an order of the candidates, and at least one of the maximum list size or the order of the candidates is dependent on at least one of a partition size or a partition shape of the first partition. The circuitry selects the first motion vector from the candidates included in the list; encodes an index indicating the first motion vector among the candidates in the list into the bitstream based on the maximum list size; and generates the predicted image for the first partition using the first motion vector.

公开(公告)号：US20250106423A1

公开(公告)日：2025-03-27

申请号：US18972693

申请日：2024-12-06

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 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

Abstract: An image encoder includes circuitry and a memory, wherein the circuitry, in operation, obtains a current block from a coding tree unit (CTU); determines whether inter prediction is to be applied to the current block; in response to determining that the inter prediction is to be applied, performs a partition prediction process; and, in response to determining that the inter prediction is not to be applied, encodes the current block without using the partition prediction process. The partition prediction process includes predicting first values of a set of pixels between a first partition and a second partition in the current block, using a first motion vector for the first partition; predicting second values of the set of pixels, using a second motion vector for the second partition; weighting the first values and the second values; and generating a prediction image for the current block using the weighted first and second values.

公开(公告)号：US20250056027A1

公开(公告)日：2025-02-13

申请号：US18926018

申请日：2024-10-24

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoder has circuitry coupled to a memory. The circuitry splits a current image block into a plurality of partitions. The circuitry predicts a first motion vector from a set of uni-prediction motion vector candidates for a first partition of the plurality of partitions, and decodes the first partition using the first motion vector.

公开(公告)号：US20250039395A1

公开(公告)日：2025-01-30

申请号：US18911807

申请日：2024-10-10

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：US20250030869A1

公开(公告)日：2025-01-23

申请号：US18909662

申请日：2024-10-08

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：US20240430453A1

公开(公告)日：2024-12-26

申请号：US18825269

申请日：2024-09-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hideyuki OHGOSE ,  Kiyofumi ABE ,  Hiroshi ARAKAWA ,  Tatsuro JURI ,  Kazuhito KIMURA

IPC: H04N19/176 ,  H04N19/103 ,  H04N19/146 ,  H04N19/436 ,  H04N19/50

Abstract: A video image decoding device receives, as the code string to be decoded, a first code string to be decoded including information based on an encoded residual coefficient and header information associated with the information or a second code string to be decoded including a residual image obtained in an encoding process step of the code string to be decoded and header information associated with the residual image. The video image decoding device, when the code string to be decoded that is received by the receiver is the first code string to be decoded, adds the residual decoded image and the predictive image generated by the predictive encoder to each other to generate and output a reconstructed image and, when the code string to be decoded received by the receiver is the second code string to be decoded, adds a residual image included in the second code string to be decoded and the predictive image to each other to generate and output a reconstructed image.

公开(公告)号：US20240406381A1

公开(公告)日：2024-12-05

申请号：US18799023

申请日：2024-08-09

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Takahiro NISHI ,  Tadamasa TOMA ,  Kiyofumi ABE

IPC: H04N19/105 ,  H04N19/15

Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry switches between storing and not storing of a decoded picture buffer (DPB) parameter related to a DPB in a common header shared between layers in layer groups each including at least one output layer, according to whether or not all the layer groups in a bitstream each include only one layer.

公开(公告)号：US20240397110A1

公开(公告)日：2024-11-28

申请号：US18795488

申请日：2024-08-06

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/167 ,  H04N19/186

Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry determines whether or not a current video to be processed is a progressive video. When it is determined that the current video is a progressive video, the encoder encodes, into a bitstream, one syntax element indicating a chroma location type which is information indicating locations of chroma samples relative to luma samples for a frame included in the current video. When it is determined that the current video is not a progressive video, the encoder encodes two syntax elements into the bitstream, each of which indicates the chroma location type for a different one of fields of two types included in the current video.