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    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    51.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD 未知

    公开(公告)号：AU2020298425A2

    公开(公告)日：2022-01-06

    申请号：AU2020298425

    申请日：2020-06-15

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KATO YUSUKE

    IPC: H04N19/577

    Abstract: A coding device (100) is provided with a circuit and a memory connected to the circuit. The circuit in operation: derives, as a first parameter, a sum of a plurality of horizontal gradient sum absolute values respectively derived with respect to a plurality of relative pixel positions; derives, as a second parameter, a sum of a plurality of vertical gradient sum absolute values respectively derived with respect to the plurality of relative pixel positions; derives, as a third parameter, a sum of a plurality of horizontally corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fourth parameter, a sum of a plurality of vertically corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fifth parameter, a sum of a plurality of vertically corresponding horizontal gradient sums respectively derived with respect to the plurality of relative pixel positions; and, using the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter, generates a prediction image for use in coding of a current block.

    Coding device, decoding device, coding method, and decoding method
    52.
    发明专利
    Coding device, decoding device, coding method, and decoding method 未知

    公开(公告)号：AU2020298425A1

    公开(公告)日：2021-12-23

    申请号：AU2020298425

    申请日：2020-06-15

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KATO YUSUKE

    IPC: H04N19/577

    Abstract: A coding device (100) is provided with a circuit and a memory connected to the circuit. The circuit in operation: derives, as a first parameter, a sum of a plurality of horizontal gradient sum absolute values respectively derived with respect to a plurality of relative pixel positions; derives, as a second parameter, a sum of a plurality of vertical gradient sum absolute values respectively derived with respect to the plurality of relative pixel positions; derives, as a third parameter, a sum of a plurality of horizontally corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fourth parameter, a sum of a plurality of vertically corresponding pixel difference values respectively derived with respect to the plurality of relative pixel positions; derives, as a fifth parameter, a sum of a plurality of vertically corresponding horizontal gradient sums respectively derived with respect to the plurality of relative pixel positions; and, using the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter, generates a prediction image for use in coding of a current block.

    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    55.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD 未知

    公开(公告)号：CA3119646A1

    公开(公告)日：2020-07-09

    申请号：CA3119646

    申请日：2019-12-23

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： LIM CHONG SOON ,  SUN HAI WEI ,  TEO HAN BOON ,  LI JING YA ,  KUO CHE-WEI ,  ABE KIYOFUMI ,  TOMA TADAMASA ,  NICHI TAKAHIRO ,  KATO YUSUKE

    IPC: H04N19/117

    Abstract: A coding device (100) that codes coding target blocks of an image is provided with a processor (a1) and memory (a2) that is connected to the processor (a1). The processor (a1) generates, for a motion, a first predicted image having an integer pixel unit on the basis of a motion vector, and uses an interpolation filter to interpolate the values of the minimum pixel positions between a plurality of integer pixels included in the first predicted image, thereby generating a second predicted image, and, on the basis of the second predicted image, codes coding target blocks. Usage of the interpolation filter involves switching between a first interpolation filter and a second interpolation filter in which the number of taps differs from the first interpolation filter.

    ENCODER, DECODER, ENCODING METHOD, DECODING METHOD, AND PICTURE COMPRESSION PROGRAM
    58.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, DECODING METHOD, AND PICTURE COMPRESSION PROGRAM 未知

    公开(公告)号：CA3157007A1

    公开(公告)日：2019-11-28

    申请号：CA3157007

    申请日：2019-05-09

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KANOH RYUICHI ,  LIM CHONG SOON ,  SHASHIDHAR SUGHOSH PAVAN ,  LIAO RU LING ,  SUN HAI WEI ,  TEO HAN BOON ,  LI JING YA

    Abstract: An encoder partitions into blocks using a set of block partition modes obtained by combining one or more block partition modes defining a partition type. The set of block partition modes includes a first partition mode defining the partition direction and number of partitions for partitioning a first block, and a second block partition mode defining the partition direction and number of partitions for partitioning a second block which is one of blocks obtained after the first block is partitioned. When the number of partitions of the first block partition mode is three, the second block is a center block among the blocks obtained after partitioning the first block, and the partition direction of the second block partition mode is same as the partition direction of the first block partition mode, the second block partition mode includes only a block partition mode indicating that the number of partitions is three.

    ENCODER, ENCODING METHOD, DECODER, AND DECODING METHOD
    60.
    发明专利
    ENCODER, ENCODING METHOD, DECODER, AND DECODING METHOD 未知

    公开(公告)号：CA3069579A1

    公开(公告)日：2019-01-17

    申请号：CA3069579

    申请日：2018-07-11

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： OHKAWA MASATO ,  SAITOU HIDEO ,  TOMA TADAMASA ,  NISHI TAKAHIRO ,  ABE KIYOFUMI ,  KANOH RYUICHI

    IPC: H04N19/124

    Abstract: A coding device (100) for coding a block to be coded of a picture is provided with a circuit and a memory, wherein the circuit generates a first transformation coefficient using the memory by performing a first transformation on a residual signal of the block to be coded using a first transformation base, generates a second transformation coefficient by performing a second transformation on the first transformation coefficient using a second transformation base when the first transformation base matches a predetermined transformation base, quantizes the second transformation coefficient, and quantizes the first transformation coefficient without performing the second transformation when the first transformation base differs from the predetermined transformation base.

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