어드밴스드 시간 모션 벡터 예측에 대한 개선들

    公开(公告)号:KR20200128036A

    公开(公告)日:2020-11-11

    申请号:KR20207026080

    申请日:2018-03-19

    Applicant: QUALCOMM INC

    Abstract: 디코딩하기위한방법들및 디바이스들은, 어느픽처가병치된픽처인지를결정하고, 그리고병치된픽처에서의연관된블록과현재코딩픽처에서의현재블록사이의초기모션벡터를찾기위해현재코딩픽처에서의이전에디코딩된블록들을사용하는것에기초하여, 현재코딩픽처에서의비디오데이터의현재블록에대응하는병치된픽처에서의비디오데이터의연관된블록의위치를결정하도록구성된프로세서를포함하고, 여기서, 비디오데이터의연관된블록은적어도하나의제 1 도출된모션벡터를포함한다. 프로세서는, 병치된픽처에서의연관된블록과연관되는적어도하나의제 1 도출된모션벡터에기초하여, 초기모션벡터가병치된픽처를포인팅할경우, 현재코딩픽처에서의현재블록과연관되는적어도하나의제 2 도출된모션벡터를결정하도록구성된다.

    Improved intra prediction in video coding

    公开(公告)号:AU2018291135B2

    公开(公告)日:2023-04-20

    申请号:AU2018291135

    申请日:2018-06-28

    Applicant: QUALCOMM INC

    Abstract: An apparatus configured to encode or decode video data that includes a memory configured to store at least one reconstructed sample of video data and at least one processor, in communication with the memory, that is configured to identify at least one reconstructed sample, determine at least one extended angular intra prediction mode to use for intra prediction of at least one sample of a current block, intra predict, using the at least one extended angular intra prediction mode, at least one sample of the current block based on the at least one reconstructed sample, extended angular intra prediction modes including angular intra prediction modes other than angular prediction modes between horizontal -45 degrees and vertical -45 degrees, and encode or decode the current block based on the at least one predicted sample.

    Intra predicción de croma de modelo lineal para codificación de vídeo

    公开(公告)号:ES2884375T3

    公开(公告)日:2021-12-10

    申请号:ES17772283

    申请日:2017-09-15

    Applicant: QUALCOMM INC

    Abstract: Un método de decodificación de datos de vídeo, comprendiendo el método: recibir un bloque codificado de muestras de luma de un primer bloque de datos de vídeo; recibir bloques codificados de muestras de luma y muestras de croma de bloques vecinos de datos de vídeo; decodificar el primer bloque codificado de muestras de luma para crear muestras de luma reconstruidas del primer bloque; decodificar los bloques vecinos codificados de muestras de luma para crear muestras de luma reconstruidas de bloques vecinos y decodificar los bloques vecinos codificados de muestras de croma para crear muestras de croma reconstruidas de bloques vecinos; seleccionar un conjunto de muestras de luma reconstruidas de los bloques vecinos para usar al predecir las muestras de croma del primer bloque; clasificar las muestras de luma reconstruidas del conjunto que son mayores que un primer umbral como si estuvieran en un primer grupo de muestras de una pluralidad de grupos de muestras de muestras vecinas; clasificar las muestras de luma reconstruidas del conjunto que son menores o iguales que el primer umbral como si estuvieran en un segundo grupo de muestras de la pluralidad de grupos de muestras de muestras vecinas; determinar un primer modelo de predicción lineal basándose en las muestras de luma reconstruidas del primer grupo de muestras de muestras vecinas y las correspondientes muestras de croma vecinas reconstruidas; determinar un segundo modelo de predicción lineal basándose en las muestras de luma reconstruidas del segundo grupo de muestras de muestras vecinas y las correspondientes muestras de croma vecinas reconstruidas; clasificar las muestras de luma reconstruidas del primer bloque que son mayores que el primer umbral como si estuvieran en un primer grupo de muestras del primer bloque; clasificar las muestras de luma reconstruidas del primer bloque que son menores o iguales que el primer umbral como si estuvieran en un segundo grupo de muestras del primer bloque; determinar si el número de muestras clasificadas en un grupo de muestras es menor que un número mínimo predefinido y cambiar al menos una muestra entre grupos de muestras cuando el número de muestras clasificadas en el grupo es menor que el número mínimo predefinido; aplicar el primer modelo de predicción lineal a las muestras de luma reconstruidas en el primer grupo de muestras del primer bloque; aplicar el segundo modelo de predicción lineal a las muestras de luma reconstruidas en el segundo grupo de muestras del primer bloque; y determinar muestras de croma previstas en el primer bloque de datos de vídeo basándose en el primer modelo de predicción lineal aplicado y el segundo modelo de predicción lineal aplicado.

    IMPROVEMENTS TO ADVANCED TEMPORAL MOTION VECTOR PREDICTION

    公开(公告)号:SG11202007843YA

    公开(公告)日:2020-10-29

    申请号:SG11202007843Y

    申请日:2018-03-19

    Applicant: QUALCOMM INC

    Abstract: Methods and devices for decoding including a processor configured to determine which picture is a collocated picture, and determine a location of an associated block of the video data in the collocated picture that corresponds to the current block of video data in the current coding picture, based on using previously decoded blocks in the current coding picture to find an initial motion vector between the associated block in the collocated picture and the current block in the current coding picture, where the associated block of the video data includes at least one first derived motion vector. The processor configured to determine at least one second derived motion vector associated with the current block in the current coding picture, when the initial motion vector points to the collocated picture, based on the at least on first derived motion vector associated with the associated block in the collocated picture.

    Codificación de información de movimiento de predicción afín para codificación de video.

    公开(公告)号:CL2020000815A1

    公开(公告)日:2020-09-25

    申请号:CL2020000815

    申请日:2020-03-30

    Applicant: QUALCOMM INC

    Abstract: UN DISPOSITIVO EJEMPLAR PARA CODIFICAR DATOS DE VIDEO INCLUYE UNA MEMORIA CONFIGURADA PARA ALMACENAR DATOS DE VIDEO, Y UNO O MÁS PROCESADORES IMPLEMENTADOS EN CIRCUITERÍA Y CONFIGURADOS PARA CODIFICAR UNA PRIMERA DIFERENCIA DE VECTOR DE MOVIMIENTO (MVD) QUE REPRESENTA UNA DIFERENCIA ENTRE UN PRIMER VECTOR DE MOVIMIENTO DE UN BLOQUE ACTUAL DE DATOS DE VIDEO PREVISTOS UTILIZANDO PREDICCIÓN AFÍN Y UN PRIMER PREDICTOR DE VECTOR DE MOVIMIENTO (MVP) PARA EL PRIMER VECTOR DE MOVIMIENTO, PREDECIR UNA SEGUNDA MVD A PARTIR DE LA PRIMERA MVD PARA UN SEGUNDO VECTOR DE MOVIMIENTO DEL BLOQUE ACTUAL Y CODIFICAR EL BLOQUE ACTUAL UTILIZANDO PREDICCIÓN AFÍN DE ACUERDO CON EL PRIMER VECTOR DE MOVIMIENTO Y EL SEGUNDO VECTOR DE MOVIMIENTO. PREDECIR LA SEGUNDA MVD A PARTIR DE LA PRIMERA MVD EN ESTO PUEDE REDUCIR LA TASA DE BITS DE UNA CORRIENTE DE BITS QUE INCLUYE DATOS DE VIDEO CODIFICADOS, ASÍ COMO MEJORAR LA EFICIENCIA DE PROCESAMIENTO.

    AFFINE MOTION VECTOR PREDICTION IN VIDEO CODING

    公开(公告)号:SG11202002885RA

    公开(公告)日:2020-05-28

    申请号:SG11202002885R

    申请日:2018-11-14

    Applicant: QUALCOMM INC

    Abstract: A method and system of coding video data using affine motion compensation is described. A method may include receiving a current block of video data that is to be decoded using affine motion compensation, and constructing an affine motion vector predictor (MVP) list for one or more control points of the current block of video data, including adding a motion vector from a neighboring block of video data to the affine MVP list in the case that the motion vector has an associated reference picture that is the same as a target reference picture for the current block of video data. A video coder may determine motion vectors for the one or more control points using the affine MVP list, and code the current block of video data with the determined motion vectors for the one or more control points of the current block of video data.

    UNIFIED MERGE CANDIDATE LIST USAGE

    公开(公告)号:SG11202002881XA

    公开(公告)日:2020-05-28

    申请号:SG11202002881X

    申请日:2018-11-14

    Applicant: QUALCOMM INC

    Abstract: A video decoder including one or more processors configured to receive one or more bits, in a bitstream, that indicate the encoded current block of video data was encoded based on a unified candidate list that includes motion vector candidates based on one or more translational motion vectors, and motion vector candidates based on one or more affine motion vectors. A merge index represented in the bitstream may indicate which candidate in the unified candidate list is associated with the motionvector of the encoded current block of video data. Based on the merge index, the one or more processors are configured to select one or more motion vectors of a candidate from the unified candidate list, based on the merge index, where the candidate has one or more of the motion vectors corresponding to the translational motion vectors or affine motion vectors within the unified candidate list.

    AFFINE PREDICTION IN VIDEO CODING

    公开(公告)号:SG11202001985VA

    公开(公告)日:2020-04-29

    申请号:SG11202001985V

    申请日:2018-10-10

    Applicant: QUALCOMM INC

    Abstract: A device for video decoding can be configured to obtain, from a syntax structure in a bitstream comprising an encoded representation of the video data, a syntax element indicating whether 6-parameter affine prediction is enabled for blocks corresponding to the syntax structure, wherein the blocks corresponding to the syntax structure comprise a first block; based on the syntax element indicating that the 6-parameter affine prediction is enabled for the blocks corresponding to the syntax structure, use the 6-parameter affine prediction to generate a predictive block for the first block; and use the predictive block and residual data to reconstruct the first block.

    CODING AFFINE PREDICTION MOTION INFORMATION FOR VIDEO CODING

    公开(公告)号:SG11202001574YA

    公开(公告)日:2020-04-29

    申请号:SG11202001574Y

    申请日:2018-10-02

    Applicant: QUALCOMM INC

    Abstract: An example device for coding video data includes a memory configured to store video data, and one or more processors implemented in circuitry and configured to code a first motion vector difference (MVD) representing a difference between a first motion vector of a current block of video data predicted using affine prediction and a first motion vector predictor (MVP) for the first motion vector, predict a second MVD from the first MVD for a second motion vector of the current block, and code the current block using affine prediction according to the first motion vector and the second motion vector. Predicting the second MVD from the first MVD in this may reduce bitrate of a bitstream including coded video data, as well as improve processing efficiency.

    Partial reconstruction based template matching for motion vector derivation

    公开(公告)号:AU2018297993A1

    公开(公告)日:2019-12-19

    申请号:AU2018297993

    申请日:2018-07-02

    Applicant: QUALCOMM INC

    Abstract: A method of decoding video data includes determining, by a video decoder, a neighboring block in a current frame is inter coded. The method includes, in response to determining the neighboring block is inter coded, determining, by the video decoder, a template for a current block in the current frame based on a partial reconstruction of the neighboring block. The method includes determining, by the video decoder, a reference block in a reference frame corresponding to the template for the current block and determining, by the video decoder, motion vector information for the current frame based on the reference block and the template. The method includes generating, by the video decoder, a predictive block for the current block of video data based on the motion vector information and decoding, by the video decoder, the current block of video data based on the predictive block.

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