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

    公开(公告)号:AU2017202023B2

    公开(公告)日:2018-12-20

    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

    Procedimiento de codificación de video de movimiento, y aparato de codificación de video de movimiento

    公开(公告)号:ES2685945T3

    公开(公告)日:2018-10-15

    申请号:ES16193061

    申请日:2012-02-28

    Abstract: Un procedimiento de codificación de imágenes en movimiento para codificar un bloque actual, comprendiendo: determinar un primer candidato de bloque de fusión en una lista de candidatos de bloques de fusión y un segundo candidato de bloque de fusión en la lista de candidatos de bloques de fusión, teniendo el primer candidato de bloque de fusión al menos (i) un primer vector de movimiento que ha sido usado para codificar un primer bloque vecino al bloque actual, (ii) una primera dirección de predicción correspondiente al primer vector de movimiento, y (iii) un primer valor del índice de imagen de referencia para identificar una primera imagen de referencia correspondiente con el primer vector de movimiento, y teniendo el segundo candidato de bloque de fusión al menos (i) un segundo vector de movimiento que ha sido usado para codificar un segundo bloque vecino al bloque actual y diferente del primer bloque, (ii) una segunda dirección de predicción correspondiente al segundo vector de movimiento, y (iii) un segundo valor del índice de imagen de referencia para identificar una segunda imagen de referencia correspondiente con el segundo vector de movimiento, en el que la segunda dirección de predicción es diferente de la primera dirección de predicción y la lista de candidatos de bloques de fusión incluye una pluralidad de candidatos de bloques de fusión uno de los cuales es seleccionado para ser usado para codificar el bloque actual; y generar un candidato de bloque de fusión combinado de predicción bidireccional mediante la asignación del primer vector de movimiento y el primer índice de imagen de referencia para la primera dirección de predicción del candidato de bloque de fusión combinado y mediante la asignación del segundo vector de movimiento y el segundo índice de imagen de referencia para la segunda dirección de predicción del candidato de bloque de fusión combinado; y codificar el bloque actual mediante el uso de un candidato de bloque de fusión seleccionado entre la pluralidad de candidatos de bloques de fusión incluyendo el primer candidato de bloque de fusión, el segundo candidato de bloque de fusión, y el candidato de bloque de fusión combinado.

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

    公开(公告)号:AU2012285315B2

    公开(公告)日:2016-07-21

    申请号:AU2012285315

    申请日:2012-06-28

    Abstract: An image encoding method comprises an encoding step (S801) for encoding first binarized data, which indicates a first intra prediction mode, and second binarized data, which indicates a second intra prediction mode. The encoding step (S801) uses a context adaptive arithmetic encoding to encode a first context adaptive portion, which is a portion of the first binarized data, and a second context adaptive portion, which is a portion of the second binarized data, and further uses a bypass encoding to encode a first bypass portion, which is another portion of the first binarized data, and a second bypass portion, which is another portion of the second binarized data, thereby generating encoded data that includes the first and second context adaptive portions and that also includes the first and second bypass portions following the first and second context adaptive portions.

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

    公开(公告)号:AU2016202666A1

    公开(公告)日:2016-05-26

    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:AU2011353405B2

    公开(公告)日:2016-01-28

    申请号:AU2011353405

    申请日:2011-12-27

    Abstract: An image encoding method comprising an addition step (S701) for adding a first adjacent motion vector as a prediction motion vector candidate to a candidate list of prediction motion vectors for use in the encryption of the current motion vector, a selection step (S702) for selecting a prediction motion vector from the candidate list, and an encoding step (S703) for encoding the current motion vector using the prediction motion vector, wherein during the addition step (S701), the first adjacent motion vector, which designates a position within a first reference picture included in a first reference picture list, is added to the candidate list for the current motion vector, which designates a position within a second reference picture included in a second reference picture list.

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