公开(公告)号：US11533511B2

公开(公告)日：2022-12-20

申请号：US17591259

申请日：2022-02-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Masato Ohkawa ,  Hideo Saitou ,  Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma ,  Yusuke Kato

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

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：US11503330B2

公开(公告)日：2022-11-15

申请号：US17319997

申请日：2021-05-13

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/00 ,  H04N19/52 ,  H04N19/12 ,  H04N19/174 ,  H04N19/182

Abstract: An encoder includes circuitry and memory connected to the circuitry. In operation, the circuitry: corrects a base motion vector using a correction value for correcting the base motion vector in a predetermined direction; and encodes a current partition to be encoded in an image of a video, using the base motion vector corrected. The correction value is specified by a first parameter and a second parameter, the first parameter indicating a table to be selected from among a plurality of tables each including values, the second parameter indicating one of the values included in the table to be selected indicated by the first parameter. In each of the plurality of tables, a smaller value among the values is assigned a smaller index. Each of the plurality of tables includes a different minimum value among the values.

公开(公告)号：US11490076B2

公开(公告)日：2022-11-01

申请号：US17137061

申请日：2020-12-29

Applicant: Panasonic Intellectual Property Corporation of America

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

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

Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. The circuitry, in operation, stores a first parameter into a bitstream, the first parameter indicating, as a prediction mode, one of (i) a multiple prediction mode in which a prediction image is generated by overlapping an inter prediction image of a current block and an intra prediction image of the current block and (ii) one of a plurality of prediction modes including a non-rectangular mode in which a prediction image is generated for each non-rectangular partition in the current block, and encodes the current block according to the prediction mode.

公开(公告)号：US11463725B2

公开(公告)日：2022-10-04

申请号：US17230725

申请日：2021-04-14

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: H04N19/00 ,  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：US11438580B2

公开(公告)日：2022-09-06

申请号：US17307336

申请日：2021-05-04

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/80

Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of horizontal gradient values; derives, as a first parameter, the total sum of the absolute values of horizontal gradient values; derives, as a second parameter, the total sum of the absolute values of vertical gradient values; derives a horizontal-related pixel difference value; derives, as a third parameter, the total sum of the absolute values of horizontal-related pixel difference values; derives a vertical-related pixel difference value; derives, as a fourth parameter, the total sum of the absolute values of vertical-related pixel difference values; and generates a prediction image using the first to fourth parameters.

公开(公告)号：US11425413B2

公开(公告)日：2022-08-23

申请号：US16660071

申请日：2019-10-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma ,  Ryuichi Kanoh ,  Takashi Hashimoto

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/176 ,  H04N19/59

Abstract: An encoder that; obtains two prediction images by performing motion compensation using two motion vectors; obtains a gradient value of each of pixels included in the two prediction images; derives a local motion estimation value for each of sub-blocks based on the pixel value and the gradient value of each of the pixels, the sub-blocks being obtained by partitioning the current block; and generates a final prediction image for the current block using the pixel value and the gradient value of each of the pixels, and the local motion estimation value derived for each of the sub-blocks. Each of the pixels in the two prediction images is interpolated with sub-pixel accuracy, and a reference range for the interpolation is included in a normal reference range that is referred to for motion compensation for the current block in normal inter prediction performed without using the local motion estimation value.

公开(公告)号：US11386930B2

公开(公告)日：2022-07-12

申请号：US16859646

申请日：2020-04-27

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi Yahata ,  Tadamasa Toma

IPC: G11B20/10 ,  G11B27/32 ,  H04N5/85 ,  G11B27/10 ,  H04N9/804 ,  H04N9/82 ,  H04N5/93 ,  H04N9/87

Abstract: A recording medium includes a video stream of a standard-luminance range and a video stream of high-luminance range, which are used selectively in accordance with a playback environment. The recording medium also includes a subtitle stream of the standard-luminance range and a subtitle stream of the high-luminance range, which are used selectively in accordance with the playback environment. A playlist file includes a management region where playback control information relating to a main stream is stored, and includes an extended region. The management region stores first playback control information specifying playing of the video stream of the high-luminance range and the subtitle stream of the high-luminance range in combination. The extended region stores second playback control information specifying playing of the video stream of the standard-luminance range and the subtitle stream of the standard-luminance range in combination.

公开(公告)号：US11375186B2

公开(公告)日：2022-06-28

申请号：US16593186

申请日：2019-10-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Ryuichi Kanoh ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186

Abstract: An encoder includes processing circuitry and a memory coupled to the processing circuitry. Using the memory, the processing circuitry is configured to: change values of pixels in a first block and a second block to filter a boundary between the first block and the second block, using clipping such that change amounts of the respective values do not exceed respective thresholds, the pixels in the first block and the second block being arranged along a line across the boundary. The pixels include type one pixels and type two pixels different from the type one pixels. The respective thresholds for the type one pixels in the first block and the second block are selected to be symmetrical or asymmetrical with respect to the boundary based on block sizes of the first block and the second block.

公开(公告)号：US20220201306A1

公开(公告)日：2022-06-23

申请号：US17691623

申请日：2022-03-10

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yusuke Kato ,  Kiyofumi Abe ,  Tadamasa Toma ,  Takahiro Nishi

IPC: H04N19/13 ,  H04N19/105 ,  H04N19/91 ,  H04N19/176 ,  H04N19/46

Abstract: An encoder includes circuitry and memory coupled to the circuitry. In residual coding of a current block to which an orthogonal transform is not applied, when coefficient information flags relating to a coefficient in the current block are encoded, the circuitry: performs a level mapping process to transform the coefficient to a second coefficient by using a predicted value, in which the predicted value is determined based on neighboring coefficients of the coefficient within the current block; encodes second coefficient information flags by Context-based Adaptive Binary Arithmetic Coding (CABAC), each of the second coefficient information flags relating to the second coefficient; and encodes a remainder value of the coefficient with Golomb-Rice code, and when the coefficient information flags are not encoded, in operation, the circuitry: skips the level mapping process; and encodes a value of the coefficient with the Golomb-Rice code.

公开(公告)号：US11350085B2

公开(公告)日：2022-05-31

申请号：US17017976

申请日：2020-09-11

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma ,  Ryuichi Kanoh

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

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.