MX2021003800A - Método de predicción de imágenes y aparato de predicción de imágenes. - Google Patents

Método de predicción de imágenes y aparato de predicción de imágenes.

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Publication number
MX2021003800A
MX2021003800A MX2021003800A MX2021003800A MX2021003800A MX 2021003800 A MX2021003800 A MX 2021003800A MX 2021003800 A MX2021003800 A MX 2021003800A MX 2021003800 A MX2021003800 A MX 2021003800A MX 2021003800 A MX2021003800 A MX 2021003800A
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Mexico
Prior art keywords
pixel units
pixel
motion vectors
resolution
control points
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MX2021003800A
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English (en)
Inventor
Sixin Lin
Haitao Yang
Ruopu Huang
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Huawei Tech Co Ltd
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Publication of MX2021003800A publication Critical patent/MX2021003800A/es

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/513Processing of motion vectors
    • H04N19/517Processing of motion vectors by encoding
    • H04N19/52Processing of motion vectors by encoding by predictive encoding
    • GPHYSICS
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    • GPHYSICS
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    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103Selection of coding mode or of prediction mode
    • H04N19/105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
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    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
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    • H04N19/157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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    • H04N19/176Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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    • H04N19/423Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
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    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
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    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
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    • H04N19/80Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation

Abstract

Se describen un método de predicción de imágenes y un aparato relacionado. El método de predicción de imágenes incluye: determinar los vectores de movimiento de W puntos de control en un bloque de imágenes actual; obtener, por medio de cálculo, los vectores de movimiento de P unidades de pixeles del bloque de imágenes actual al utilizar un modelo de movimiento y los vectores de movimiento de los W puntos de control, donde la precisión de los vectores de movimiento determinados de los W puntos de control es 1/n de precisión de pixeles, la precisión de un vector de movimiento que se obtiene por medio de cálculo y que es de cada una de las P unidades de pixeles es 1/N de la precisión de pixeles, las P unidades de pixeles son algunas o todas las unidades de pixeles del bloque de imágenes actual, y N es mayor a n; y realizar la filtración de interpolación en un pixel de una unidad de pixeles de referencia correspondiente, en una imagen de referencia, de cada una de las P unidades de pixeles al utilizar un filtro de interpolación con una fase de Q, para obtener un valor de pixeles predicho de cada una de las P unidades de pixeles, donde Q es mayor que n. Las soluciones técnicas proporcionadas en las modalidades de la presente invención ayudan a reducir la complejidad de cálculo durante un proceso de predicción de imágenes.
MX2021003800A 2015-07-03 2016-06-29 Método de predicción de imágenes y aparato de predicción de imágenes. MX2021003800A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510391765.7A CN106331722B (zh) 2015-07-03 2015-07-03 图像预测方法和相关设备
PCT/CN2016/087750 WO2017005128A1 (zh) 2015-07-03 2016-06-29 图像预测方法和相关设备

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MX2018000067A MX2018000067A (es) 2015-07-03 2016-06-29 Metodo de prediccion de imagenes y aparato de prediccion de imagenes.
MX2021003800A MX2021003800A (es) 2015-07-03 2016-06-29 Método de predicción de imágenes y aparato de predicción de imágenes.
MX2023000807A MX2023000807A (es) 2015-07-03 2018-01-08 Metodo de prediccion de imagenes y aparato de prediccion de imagenes.

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EP (1) EP3306934B1 (es)
JP (6) JP6776276B2 (es)
KR (4) KR102549824B1 (es)
CN (2) CN106331722B (es)
AU (1) AU2016290017B2 (es)
MX (3) MX2018000067A (es)
MY (1) MY191714A (es)
RU (2) RU2699258C2 (es)
SG (1) SG11201710800QA (es)
WO (1) WO2017005128A1 (es)
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