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    Método de codificação, método de decodificação e mídia legível por computador não transitória
    101.
    发明专利
    Método de codificação, método de decodificação e mídia legível por computador não transitória 未知

    公开(公告)号：BR122021025024A2

    公开(公告)日：2022-03-15

    申请号：BR122021025024

    申请日：2020-05-20

    Applicant: PANASONIC IP CORP AMERICA

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

    IPC: H04N19/70

    Abstract: método de codificação, método de decodificação e mídia legível por computador não transitória. a presente invenção refere-se a um conjunto de circuitos (160) de um codificador (100) que é configurado para codificar uma imagem de acordo com uma estrutura de codificação, incluindo uma figura de ponto de acesso aleatório intra (irap), figura dianteiras a serem emitidas antes da figura de irap na ordem de emissão e figuras traseiras a serem emitidas após a figura de irap na ordem de emissão. quando a imagem é codificada, o conjunto de circuitos (160) codifica, de acordo com uma sinalização em um fluxo de bits, no máximo uma figura traseira entre as figuras traseiras antes de codificar as figuras dianteiras na ordem de codificação, e codifica as figuras traseiras diferentes de, no máximo, uma figura traseira após codificação das figuras dianteiras na ordem de codificação. a sinalização indica se uma imagem de cada uma das unidades de acesso no fluxo de bits é uma figura de campo. o conjunto de circuitos (160) codifica no máximo uma figura traseira antes de codificar as figuras dianteiras na ordem de codificação quando a sinalização indica que a figura é uma figura de campo.

    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    102.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD 未知

    公开(公告)号：SG11202112656UA

    公开(公告)日：2021-12-30

    申请号：SG11202112656U

    申请日：2020-06-15

    Applicant: PANASONIC IP CORP AMERICA

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

    IPC: H04N19/577

    Abstract: An encoder (100) 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.

    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    103.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD 未知

    公开(公告)号：SG11202111094YA

    公开(公告)日：2021-11-29

    申请号：SG11202111094Y

    申请日：2020-04-16

    Applicant: PANASONIC IP CORP AMERICA

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

    IPC: H04N19/159 ,  H04N19/12 ,  H04N19/176

    Abstract: An encoder (100) includes: circuitry (160); and memory (162) coupled to the circuitry (160). In operation, the circuitry (160): derives a prediction error of the image by subtracting, from the image, a prediction image generated using intra prediction or inter prediction; performs primary transform on the prediction error, and performs secondary transform on a result of the primary transform; performs quantization on a result of the secondary transform; and encodes a result of the quantization as data of the image. In the performing of the secondary transform, when a matrix weighted intra prediction included in the intra prediction and having prediction modes is used, the circuitry (160) uses, as a transform set for the secondary transform, a common transform set shared among the prediction modes. The matrix weighted intra prediction generates the prediction image by performing matrix calculation on a pixel sequence obtained from pixel values of surrounding pixels of a current block, and the transform set for the secondary transform is applied to primary transform coefficients obtained from the result of the primary transform.

    DECODIFICADOR, Y METODO DE DECODIFICACION.
    104.
    发明专利
    DECODIFICADOR, Y METODO DE DECODIFICACION. 未知

    公开(公告)号：MX2021004194A

    公开(公告)日：2021-05-27

    申请号：MX2021004194

    申请日：2019-12-06

    Applicant: PANASONIC IP CORP AMERICA

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

    IPC: H04N19/70

    Abstract: Un codificador (100) incluye la circuitería (160) y la memoria (162) acoplada a la circuitería (160), en la cual, en operación, la circuitería (160): divide una imagen actual para codificarla en dos o más mosaicos; codifica la imagen actual realizando la codificación sobre una base de rebanada, siendo la rebanada de forma rectangular y constituida por uno o más mosaicos o una parte de un mosaico obtenido por la división; y en la codificación de la imagen actual, excluye, de la información de encabezado, la información sobre una región ocupada por una rebanada ubicada en la esquina inferior derecha de la imagen actual.

    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    105.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD 未知

    公开(公告)号：CA3153767A1

    公开(公告)日：2021-04-01

    申请号：CA3153767

    申请日：2020-07-03

    Applicant: PANASONIC IP CORP AMERICA

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

    IPC: H04N19/13 ,  H04N19/157 ,  H04N19/18

    Abstract: An encoding device (100) is provided with a circuit and a memory connected to the circuit, wherein the circuit, in operation, limits the number of times of processing of context adaptive encoding and encodes blocks of an image. In encoding of each of the blocks, in a case where the number of times of processing is in a limitation range of the number of times of processing, a coefficient information flag indicating an attribute of a coefficient included in the block is encoded. In encoding of the block, in a case where orthogonal transform is not applied to the block, when the coefficient information flag is encoded, transform processing is performed for transforming a coefficient value by using a value determined by using a peripheral coefficient that is a coefficient at the periphery of the position of a coefficient in the block, and the coefficient value after the transform processing is encoded by using the coefficient information flag encoded by the context adaptive encoding, whereas when the coefficient information flag is not encoded, the transform processing is not performed and the coefficient value is encoded by Golomb-Rice encoding.

    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    110.
    发明专利
    ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD 未知

    公开(公告)号：CA3135146A1

    公开(公告)日：2020-10-22

    申请号：CA3135146

    申请日：2020-04-16

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： TOMA TADAMASA

    IPC: H04N19/12 ,  H04N19/159 ,  H04N19/176

    Abstract: An encoding device derives, by subtracting, from an image, a prediction image of the image that is generated by an intra prediction or an inter prediction, an prediction error of the image (S311), performs primary transform on the prediction error (S312), performs secondary transform on the result of the primary transform (S312), performs quantization on the result of the secondary transform (S313), and encodes the result of the quantization as data of the image (S314). When performing the secondary transform, when a matrix computation type intra prediction (MIP) in which a prediction image is generated by performing a matrix computation on a pixel array obtained from pixel values of peripheral pixels of an object block and which has a plurality of prediction modes is used as the intra prediction, the encoding device uses a transform set common to the plurality of prediction modes as a transform set of the secondary transform that is applied for a primary transform coefficient obtained by the result of the primary transform (S312).

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