公开(公告)号：MX337291B

公开(公告)日：2016-02-24

申请号：MX2015003467

申请日：2013-11-19

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  NISHI TAKAHIRO ,  SHIBAHARA YOUJI ,  SASAI HISAO ,  TANIKAWA KYOKO ,  MATSUNOBU TORU

IPC: H04N7/12 ,  H04N19/00

Abstract: El método de decodificación de imágenes de una modalidad de la presente invención comprende: un paso de control de contexto (S204) para determinar el contexto que se utiliza para un bloque que es procesado, entre una pluralidad de contextos; y un paso de decodificación aritmética (S210) para utilizar el contexto determinado para decodificar aritméticamente una secuencia de bits que corresponde al bloque que es procesado. En el paso de control de contexto (S204), si un tipo de señal para parámetros de control es un primer tipo, el contexto se determina mediante el uso de una condición que utiliza parámetros de control para tanto un bloque izquierdo como un bloque superior, los cuales son adyacentes al bloque que es procesado (S206), y si el tipo de señal para los parámetros de control es un segundo tipo, el contexto se determina mediante el uso de una condición que no utiliza el parámetro de control para el bloque superior (S207).

公开(公告)号：AU2013278760A1

公开(公告)日：2014-12-11

申请号：AU2013278760

申请日：2013-06-07

Applicant: PANASONIC IP CORP AMERICA

Inventor： TERADA KENGO ,  NISHI TAKAHIRO ,  SHIBAHARA YOUJI ,  TANIKAWA KYOKO ,  SASAI HISAO ,  SUGIO TOSHIYASU ,  MATSUNOBU TORU

IPC: H04N19/00

Abstract: Provided is an image encoding method that uses arithmetic encoding and that comprises the following: a first flag encoding step (S701) for arithmetically encoding a first flag (greater1_flag) indicating whether an absolute value of a processing-object coefficient included in the coefficient block of the processing object is greater than 1; and a second flag encoding step (S702) for arithmetically encoding a second flag (greater2_flag) indicating whether the absolute value of the processing-object coefficient is greater than 2. In the first flag encoding step and the second flag encoding step, it is determined whether there is a coefficient the absolute value of which exceeds a threshold in the coefficient block immediately prior to the coefficient block of the processing object (S711), and depending on the determination results, the context used in the arithmetic encoding of the first flag and the second flag is switched (S712).

公开(公告)号：CA2879707A1

公开(公告)日：2014-02-13

申请号：CA2879707

申请日：2013-08-07

Applicant: PANASONIC IP CORP AMERICA

Inventor： SASAI HISAO ,  NISHI TAKAHIRO ,  SHIBAHARA YOUJI ,  TANIKAWA KYOKO ,  SUGIO TOSHIYASU ,  MATSUNOBU TORU ,  TERADA KENGO

IPC: H04N19/13 ,  H04N19/174 ,  H04N19/176 ,  H04N19/61

Abstract: An image decoding method capable of appropriately decoding an image by a simple configuration is an image decoding method for decoding an encoded image included in a bit stream block by block, and comprises: arithmetically decoding a block to be decoded (S101); determining whether or not the block to be decoded is located at the end of a slice (S103); when determining that the block to be decoded is not located at the end of the slice, determining whether or not the block to be decoded is located at the end of a sub unit that is an image constituent unit different from the slice (S105); and when determining that the block to be decoded is located at the end of the sub unit, performing termination processing of arithmetic decoding by arithmetically decoding a sub end bit (S106).

公开(公告)号：CA2875196A1

公开(公告)日：2013-12-27

申请号：CA2875196

申请日：2013-06-07

Applicant: PANASONIC IP CORP AMERICA

Inventor： TERADA KENGO ,  NISHI TAKAHIRO ,  SHIBAHARA YOUJI ,  TANIKAWA KYOKO ,  SASAI HISAO ,  SUGIO TOSHIYASU ,  MATSUNOBU TORU

IPC: H04N19/103 ,  H04N19/136 ,  H04N19/146

Abstract: Provided is an image encoding method that uses arithmetic encoding and that comprises the following: a first flag encoding step (S701) for arithmetically encoding a first flag (greater1_flag) indicating whether an absolute value of a processing-object coefficient included in the coefficient block of the processing object is greater than 1; and a second flag encoding step (S702) for arithmetically encoding a second flag (greater2_flag) indicating whether the absolute value of the processing-object coefficient is greater than 2. In the first flag encoding step and the second flag encoding step, it is determined whether there is a coefficient the absolute value of which exceeds a threshold in the coefficient block immediately prior to the coefficient block of the processing object (S711), and depending on the determination results, the context used in the arithmetic encoding of the first flag and the second flag is switched (S712).

公开(公告)号：MX2024015641A

公开(公告)日：2025-02-10

申请号：MX2024015641

申请日：2024-12-16

Applicant: PANASONIC IP CORP AMERICA

Inventor： OHKAWA MASATO ,  IGUCHI NORITAKA ,  SUGIO TOSHIYASU ,  NISHI TAKAHIRO ,  DALLA LIBERA FABIO

IPC: G06T9/00

Abstract: Un método de decodificación incluye: recibir un flujo de bits generado al codificar puntos tridimensionales, cada uno incluye la primera información de atributos y segunda información de atributos (S401); y predecir la primera información de atributos al hacer referencia a la segunda información de atributos (S402). Por ejemplo, la primera información de atributos que se va a predecir y la segunda información de atributos a la que se va a hacer referencia se pueden incluir en el mismo punto tridimensional. Por ejemplo, la primera información de atributos que se va a predecir y la segunda información de atributos a la que se va a hacer referencia se pueden incluir en diferentes puntos tridimensionales. Por ejemplo, la primera información de atributos y la segunda información de atributos se pueden almacenar en un primer componente y un segundo componente, respectivamente.

公开(公告)号：AU2021298392A1

公开(公告)日：2023-02-02

申请号：AU2021298392

申请日：2021-06-23

Applicant: PANASONIC IP CORP AMERICA

Inventor： IGUCHI NORITAKA ,  SUGIO TOSHIYASU

IPC: G06T9/00

Abstract: This three-dimensional data encoding method comprises generating a plurality of frame data items by encoding point cloud data of a plurality of frames (S12021), and generating a bitstream containing the plurality of frame data items (S12022). Each of a plurality of processing unit data items includes a frame identifier indicating a frame to which the processing unit data belongs and a processing unit identifier indicating a processing unit corresponding to the processing unit data. The values of the plurality of frame identifiers corresponding to the plurality of frame data items arranged in the bitstream are set in a predetermined order. The values of the plurality of processing unit identifiers corresponding to the plurality of processing unit data items arranged in the frame data are set in an arbitrarily defined order.

公开(公告)号：BR112021013402A2

公开(公告)日：2021-09-14

申请号：BR112021013402

申请日：2020-02-05

Applicant: PANASONIC IP CORP AMERICA

Inventor： WANG CHI ,  CHUNG DEAN HAN ,  IGUCHI NORITAKA ,  LASANG PONGSAK ,  SUGIO TOSHIYASU

IPC: G06T9/40

Abstract: método de codificação de dados tridimensionais, método de decodificação de dados tridimensionais, dispositivo de codificação de dados tridimensionais, e dispositivo de decodificação de dados tridimensionais. a presente invenção refere-se a método e dispositivo de codificação/decodificação de dados tridimensionais incluindo: calcular valores de coeficiente das partes de informação de atributo de pontos tridimensionais incluídos nos dados de nuvem de pontos (s7091); quantizar os valores de coeficiente individualmente para gerar valores quantizados (s7092); e gerar um fluxo de bits incluindo os valores quantizados (s7093). cada um dos valores de coeficiente pertence a qualquer uma das camadas. na quantização (s7092), cada um dos valores de coeficiente é quantizado usando um parâmetro de quantização para uma camada à qual o valor de coeficiente pertence entre as camadas, e o fluxo de bits inclui primeira informação e partes de segunda informação, a primeira informação indicando um parâmetro de quantização de referência, as partes de segunda informação sendo para calcular parâmetros de quantização para as camadas do parâmetro de quantização de referência.

公开(公告)号：SG11202102117VA

公开(公告)日：2021-04-29

申请号：SG11202102117V

申请日：2019-09-10

Applicant: PANASONIC IP CORP AMERICA

Inventor： HAN CHUNG DEAN ,  LASANG PONGSAK ,  WANG CHI ,  IGUCHI NORITAKA ,  SUGIO TOSHIYASU

IPC: G06T9/00

Abstract: A three-dimensional data encoding method includes: quantizing geometry information of each of three-dimensional points, using a first quantization parameter (S5391); quantizing a first luminance using a second quantization parameter and quantizing a first chrominance using a third quantization parameter, the first luminance and the first chrominance indicating a first color among attribute information of each of the three-dimensional points (S5392); and generating a bitstream including the geometry information quantized, the first luminance quantized, the first chrominance quantized, the first quantization parameter, the second quantization parameter, and a first difference between the second quantization parameter and the third quantization parameter (S5393).

公开(公告)号：SG11202012326TA

公开(公告)日：2021-01-28

申请号：SG11202012326T

申请日：2019-06-14

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  WANG CHI ,  LASANG PONGSAK ,  HAN CHUNG DEAN ,  IGUCHI NORITAKA

IPC: G06T9/40

Abstract: A three-dimensional data encoding method includes: encoding a first flag indicating whether a node having a parent node different from a parent node of a current node is to be referred to in encoding of the current node included in an N-ary tree structure of three-dimensional points included in three-dimensional data, N being an integer greater than or equal to 2 (S3661); selecting a coding table from N coding tables according to occupancy states of neighboring nodes of the current node, and performing arithmetic encoding on information of the current node using the coding table selected, when the first flag indicates that the node is to be referred to (YES in S3662) (S3663); and selecting a coding table from M coding tables according to the occupancy states of the neighboring nodes of the current node, and performing arithmetic encoding on information of the current node using the coding table selected, when the first flag indicates that the node is not to be referred to (NO in S3662), M being an integer different from N (S3664).

公开(公告)号：CA3126760A1

公开(公告)日：2020-08-13

申请号：CA3126760

申请日：2020-02-05

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  IGUCHI NORITAKA ,  HAN CHUNG DEAN ,  WANG CHI ,  LASANG PONGSAK

IPC: G06T9/40

Abstract: A three-dimensional data encoding method including calculating a plurality of coefficient values from the plurality of attribute information of a plurality of three-dimensional points included in point group data (S7091), generating a plurality of quantized values by quantizing each of the plurality of coefficient values (S7092), and generating a bit stream that includes the plurality of quantized values (S7093), the plurality of coefficient values belonging to one of a plurality of levels, each of the plurality of coefficient values being quantized in the quantization (S7092) using a quantization parameter for the level to which the coefficient value belongs, the bit stream including first information that indicates a reference quantization parameter and a plurality of second information for calculating a plurality of quantization parameters for a plurality of levels from the reference quantization parameter.