Procedimiento de decodificación de imagen y dispositivo de decodificación de imagen

    公开(公告)号:ES2697062T3

    公开(公告)日:2019-01-21

    申请号:ES12802482

    申请日:2012-06-22

    Abstract: Un procedimiento de decodificación de decodificación de un parámetro de control de control de decodificación de una imagen, comprendiendo el procedimiento de decodificación: determinar (S204) un contexto para un bloque actual en la imagen, de entre una pluralidad de contextos; y realizar (S210) decodificación aritmética en una secuencia de bits que corresponde al bloque actual, usando el contexto determinado para obtener el parámetro de control para el bloque actual, caracterizado porque la determinación (S204) incluye adicionalmente: determinar (S205) un tipo de señal en el que está clasificado el parámetro de control para el bloque actual; determinar (S206) el contexto usando ambos parámetros de control decodificados para un bloque izquierdo y un bloque superior, cuando el tipo de señal es un primer tipo, siendo el bloque izquierdo un bloque vecino a la izquierda del bloque actual y siendo el bloque superior un bloque vecino encima del bloque actual; y determinar (S208) el contexto usando una profundidad jerárquica de una unidad de datos a la que pertenece el parámetro de control para el bloque actual, sin usar ninguno de los parámetros de control decodificados para el bloque izquierdo y el bloque superior, cuando el tipo de señal es un segundo tipo diferente del primer tipo, y en el que una de una bandera de división y una bandera de salto está clasificada en el primer tipo, indicando la bandera de división si el bloque actual está o no dividido en una pluralidad de bloques, e indicando la bandera de salto si el bloque actual tiene o no que saltarse, y en el que información de inter predicción está clasificada en el segundo tipo, indicando la información de inter predicción cuál de unipredicción y bipredicción se usa para la predicción del bloque actual.

    Método de codificación de imágenes, método de decodificación de imágenes, dispositivo de codificación de imágenes y dispositivo de decodificación de imágenes

    公开(公告)号:ES2691743T3

    公开(公告)日:2018-11-28

    申请号:ES11846191

    申请日:2011-12-05

    Abstract: Un método de codificación de imágenes para dividir una imagen en unidades de procesamiento, y codificar la imagen dividida para generar una secuencia de código que incluye una cabecera de una unidad de procesamiento del tamaño de la mayor unidad, comprendiendo el método de codificación de imágenes dividir la imagen en unidades de procesamiento del tamaño de la mayor unidad, dividir jerárquicamente la imagen en unidades de procesamiento en el orden que parte de la mayor unidad de las unidades de procesamiento en un formato jerárquico, incluyendo la división jerárquica de la imagen, además: por unidad de procesamiento del tamaño de la mayor unidad, determinar un patrón de división (S401-S427) que especifique la división jerárquica de la unidad de procesamiento del tamaño de la mayor unidad en unidades de procesamiento; generar información de división (S501-S513) que represente el patrón de división; y codificar la información de división; caracterizado porque la cabecera de la unidad de procesamiento del tamaño de la mayor unidad incluye la información de división, y la información de división incluye información de la máxima profundidad jerárquica usada indicativa de la profundidad jerárquica de la unidad de procesamiento más profunda de las unidades de procesamiento resultantes de la división jerárquica de la unidad de procesamiento del tamaño de la mayor unidad.

    IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS

    公开(公告)号:MY165358A

    公开(公告)日:2018-03-21

    申请号:MYPI2013700242

    申请日:2012-01-12

    Abstract: PROVIDED ARE AN IMAGE CODING METHOD, AN IMAGE CODING APPARATUS, AN IMAGE CODING APPARATUS, AN IMAGE DECODING METHOD, AN IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS. THE IMAGE CODING METHOD COMPRISING: OBTAINING CURRENT SIGNALS TO BE CODED OF EACH OF THE PROCESSING UNITS OF THE IMAGE DATA (S401); GENERATING A BINARY SIGNAL BY PERFORMING BINARIZATION ON EACH OF THE CURRENT SIGNALS TO BE CODED (S402); SELECTING A CONTEXT FOR EACH OF THE CURRENT SIGNALS TO BE CODED FROM AMONG A PLURALITY OF CONTEXTS (S403); PERFORMING ARITHMETIC CODING OF THE BINARY SIGNAL BY USING CODED PROBABILITY INFORMATION ASSOCIATED WITH THE CONTEXT SELECTED IN THE SELECTING (S404); AND UPDATING THE CODED PROBABILITY INFORMATION BASED ON THE BINARY SIGNAL (S405), WHEREIN, IN THE SELECTING, THE CONTEXT FOR THE CURRENT SIGNAL TO BE CODED IS SELECTED, AS A SHARED CONTEXT, FOR A SIGNAL WHICH IS INCLUDED IN ONE OF A PLURALITY OF PROCESSING UNITS AND HAS A SIZE DIFFERENT FROM A SIZE OF THE PROCESSING UNIT INCLUDING THE CURRENT SIGNAL TO BE CODED.

    Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus

    公开(公告)号:AU2016202666B2

    公开(公告)日:2017-08-31

    申请号:AU2016202666

    申请日:2016-04-27

    Abstract: A computer-implemented image decoding method of decoding a current picture per block with prediction using one or both of (i) a first reference picture list including a first current reference picture for a 5 current block, the first current reference picture being referred to by a first current motion vector and (ii) a second reference picture list, the image decoding method comprising: judging whether or not a second current reference picture for the current block is identical to a second adjacent reference picture for an adjacent block adjacent to 10 the current block, the second current reference picture being (i) included in the second reference picture list and (ii) referred to by a second current motion vector, and the second adjacent reference picture being (i) included in a second adjacent reference picture list and (ii) referred to by a second adjacent motion vector; when the 15 second current reference picture is judged to be identical to the second adjacent reference picture, adding the second adjacent motion vector to a candidate list for the second current motion vector; when the second current reference picture is judged to not be identical to the second adjacent reference picture, (A) judging whether or not the 20 second current reference picture is identical to a first adjacent reference picture for the adjacent block, the first adjacent reference picture being (i) included in a first adjacent reference picture list and (ii) referred to by the first adjacent motion vector, and (B) when the second current reference picture is judged to be identical to the first 25 adjacent reference picture, adding the first adjacent motion vector to the candidate list for the second current motion vector; selecting a predicted motion vector to be used for decoding the second current motion vector from the candidate list for second current motion vector; and decoding the second current motion vector using the 30 selected predicted motion vector, wherein when the second current reference picture is judged to not be identical to the first adjacent reference picture, the first adjacent motion vector is not added to the candidate list for the second current motion vector. 7673799_1 (GHMatters) P92393.AU.1 27/04/2016 Image coding apparatus Addition 301 unit Selecting -- 302 unit Coding 303 unit Start Add adjacent motion vector to candidate list S701 -S702 Select predicted motion vector from candidate list Code motion vector using predicted motion vector S703 End

    Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus

    公开(公告)号:AU2013272989B2

    公开(公告)日:2017-05-25

    申请号:AU2013272989

    申请日:2013-05-31

    Abstract: An image encoding method according to the present invention includes a context arithmetic coding step (S511) that, by means of context arithmetic coding that is arithmetic coding that uses a variable probability, successively encodes (i) first information that indicates whether to perform sample adaptive offset (SAO) processing, which is offset processing for a pixel value, with respect to a first area of an image, and (ii) second information that indicates, for SAO processing with respect to the first area, whether to use information from SAO processing with respect to an area different from the first area, and a bypass arithmetic coding step (S512) that, after the first information and second information have been encoded and by means of bypass arithmetic coding that is arithmetic coding that uses a constant probability, encodes other information that is information for SAO processing with respect to the first area and is different from both the second information and the first information.

    IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS

    公开(公告)号:AU2017202023A1

    公开(公告)日:2017-04-20

    申请号:AU2017202023

    申请日:2017-03-27

    Abstract: ABSRTACT: An image coding method for coding last position information indicating a horizontal position and a vertical position of a last non-zero coefficient in a predetermined order in a current block to be coded. The method comprises: binarizing first and second components to generate first and second binary signals, respectively, the first component being one of a horizontal component and a vertical component which are included in the last position information, and the second component being the other of the horizontal component and the vertical component; coding first and second partial signals by first arithmetic coding, and coding third and fourth partial signals by second arithmetic coding different from the first arithmetic coding, the first and third partials signals being parts of the first binary signal, the second and fourth partial signals being parts of the second binary signal, wherein the first arithmetic coding is context adaptive arithmetic coding using a variable probability that is updated based on a coded signal, and the second arithmetic coding is bypass coding using a fixed probability; and arranging the coded first, second, third and fourth partial signals in a bit stream in this order. When the horizontal component is a maximum value for a size of the current block, the bits of the first partial signal are identical and when the vertical component is a maximum value for a size of the current block, the bits of the second partial signal are identical. - 99 8879495_1 (GHMatters) P94474.AU.1 (Start Binarize last position information S402 Code prefix part of X component S403 -N Suffix part included? No S404 Yes Set suffix flag of X component "ON" Code prefix part of Y component Suffix part included? No S407 Yes Set suffix flag of Y component "ON" Suffix flag of X component is "ON"? No S409 Yes Code suffix part of X component Suffix flag of Y component is "ON"? N S411 Yes Code suffix part of Y component Place last position information in bit stream (nd

Patent Agency Ranking