公开(公告)号：US20210344957A1

公开(公告)日：2021-11-04

申请号：US17373069

申请日：2021-07-12

申请人： Panasonic Intellectual Property Corporation of America

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

IPC分类号： H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/159 ,  G06T5/00 ,  H04N19/85

摘要： An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.

公开(公告)号：US20210344923A1

公开(公告)日：2021-11-04

申请号：US17377107

申请日：2021-07-15

申请人： Panasonic Intellectual Property Corporation of America

发明人： Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC分类号： H04N19/124 ,  H04N19/176 ,  H04N19/136 ,  H04N19/61 ,  H04N19/157

摘要： An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry: performs quantization on a plurality of transform coefficients of a current block to be encoded, using a quantization matrix when orthogonal transform is performed on the current block and secondary transform is not performed on the current block; and performs quantization on the plurality of transform coefficients of the current block without using the quantization matrix when orthogonal transform is not performed on the current block and when both orthogonal transform and secondary transform are performed on the current block.

公开(公告)号：US20210329280A1

公开(公告)日：2021-10-21

申请号：US17356839

申请日：2021-06-24

申请人： Panasonic Intellectual Property Corporation of America

发明人： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA

IPC分类号： H04N19/423 ,  H04N19/176 ,  H04N19/517 ,  H04N19/105

摘要： An encoder includes circuitry and memory. Using the memory, the circuitry performs prediction on an image. A motion vector predictor list used in the prediction includes a spatially neighboring motion vector predictor obtained from a block spatially neighboring a current block, and a spatially broad motion vector predictor obtained from a block positioned at any of a plurality of predetermined positions in a second range that is broader than a first range that spatially neighbors the current block. The plurality of predetermined positions are defined by a regular interval using the top-left of a current picture as a reference point.

公开(公告)号：US20210321117A1

公开(公告)日：2021-10-14

申请号：US17355596

申请日：2021-06-23

申请人： Panasonic Intellectual Property Corporation of America

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

IPC分类号： H04N19/159 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

摘要： When intra prediction is to be used, an encoder determines whether an adaptive basis selection mode is to be used and whether a size of the current block matches a determined size. When the adaptive basis selection mode is to be used and the size matches the determined size, the encoder fixes the first transform basis for the current block to a first determined transform basis in the adaptive basis selection mode, and generates first transform coefficients by performing first transform of residual signals of the current block using the first determined transform basis; quantizes the first transform coefficients when an intra prediction mode for the current block is a determined mode; 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 is not the determined mode.

公开(公告)号：US20210211661A1

公开(公告)日：2021-07-08

申请号：US17194781

申请日：2021-03-08

申请人： Panasonic Intellectual Property Corporation of America

发明人： Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE

IPC分类号： H04N19/119 ,  H04N19/159 ,  H04N19/105 ,  H04N19/117 ,  H04N19/82 ,  H04N19/52 ,  H04N19/174

摘要： An encoder includes circuitry and memory connected to the circuitry. The circuitry, in operation: splits one picture included in pictures into areas, intra encodes the entirety of an area among the areas; and switches areas to be intra encoded for each picture included in the pictures. In at least one of (i) generation of a reference pixel in inter prediction or (ii) loop filtering, only pixels in the area intra encoded or pixels in an area which precedes the area intra encoded in coding order are used among pixels included in the pictures.

公开(公告)号：US20210168357A1

公开(公告)日：2021-06-03

申请号：US17173634

申请日：2021-02-11

申请人： Panasonic Intellectual Property Corporation of America

发明人： Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/182

摘要： An encoder includes circuitry and memory connected to the circuitry. The circuitry, in operation: derives, as a first parameter, a total sum of absolute values of sums of horizontal gradient values respectively for pairs of relative pixel positions; derives, as a second parameter, a total sum of absolute values of sums of vertical gradient values respectively for the pairs of relative pixel positions; derives, as a third parameter, a total sum of horizontal-related pixel difference values respectively for the pairs of relative pixel positions; derives, as a fourth parameter, a total sum of vertical-related pixel difference values respectively for the pairs of relative pixel positions; derives, as a fifth parameter, a total sum of vertical-related sums of horizontal gradient values respectively for the pairs of relative pixel positions; and generates a prediction image to be used to encode the current block using the first, second, third, fourth, and fifth parameters.

公开(公告)号：US20210105500A1

公开(公告)日：2021-04-08

申请号：US17101161

申请日：2020-11-23

申请人： Panasonic Intellectual Property Corporation of America

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

IPC分类号： H04N19/513 ,  H04N19/433

摘要： An encoder includes: circuitry; and memory coupled to the circuitry. In operation, the circuitry: derives a base motion vector to be used in predicting a current block to be encoded; 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; modifies the first motion vector when the motion vector difference is determined to be greater than the threshold, and does not modify the first motion vector when the motion vector difference is determined not to be greater than the threshold; and encodes the current block using the first motion vector modified or the first motion vector not modified.

公开(公告)号：US20210105479A1

公开(公告)日：2021-04-08

申请号：US17125113

申请日：2020-12-17

申请人： Panasonic Intellectual Property Corporation of America

发明人： Kiyofumi ABE ,  Takahiro NISHI ,  Tadamasa TOMA ,  Yusuke KATO

IPC分类号： H04N19/13 ,  H04N19/70 ,  H04L29/06 ,  H04N19/176 ,  H04N19/184

摘要： An encoder includes memory and circuitry which: (i) encodes an image block; (ii) when encoding the image block: binarizes coefficient information indicating coefficients of the image block; and controls whether to apply arithmetic encoding to a binary data string obtained by binarizing the coefficient information; and (iii) when binarizing the coefficient information: binarizes the coefficient information according to a first syntax structure when arithmetic encoding is applied to the data string and a predetermined condition is not satisfied; binarizes the coefficient information according to a second syntax structure when arithmetic encoding is applied to the data string and the predetermined condition is satisfied; binarizes the coefficient information according to the second syntax structure when no arithmetic encoding is applied to the data string; and subtracts 1 from a value of an initial non-zero coefficient when no arithmetic encoding is applied to the data string when encoding the image block.

公开(公告)号：US20210104092A1

公开(公告)日：2021-04-08

申请号：US17126919

申请日：2020-12-18

申请人： Panasonic Intellectual Property Corporation of America

发明人： Takahiro NISHI ,  Tadamasa TOMA ,  Toshiyasu SUGIO

IPC分类号： G06T15/20 ,  G06T7/70 ,  G06K9/00

摘要： 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：US20200260100A1

公开(公告)日：2020-08-13

申请号：US16860367

申请日：2020-04-28

申请人： Panasonic Intellectual Property Corporation of America

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

IPC分类号： H04N19/51 ,  H04N19/433

摘要： An encoder that encodes a picture to generate a coded stream includes: circuitry and a memory coupled to the circuitry. The circuitry performs, using the memory: generating a 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 correct the prediction image by referring to a second region included in the first region, and not operating the bi-directional optical flow process in response to the second region not being included in the first region; and encoding the current block based on the prediction image.