MX2021006391A - Método y aparato de codificación y decodificación de imágenes para secuencia de video. - Google Patents

Método y aparato de codificación y decodificación de imágenes para secuencia de video.

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Publication number
MX2021006391A
MX2021006391A MX2021006391A MX2021006391A MX2021006391A MX 2021006391 A MX2021006391 A MX 2021006391A MX 2021006391 A MX2021006391 A MX 2021006391A MX 2021006391 A MX2021006391 A MX 2021006391A MX 2021006391 A MX2021006391 A MX 2021006391A
Authority
MX
Mexico
Prior art keywords
block
decoding
video sequence
pixel point
prediction
Prior art date
Application number
MX2021006391A
Other languages
English (en)
Inventor
Xu Chen
Jianhua Zheng
Original Assignee
Huawei Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of MX2021006391A publication Critical patent/MX2021006391A/es

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods 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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods 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
    • H04N19/17—Methods 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
    • H04N19/176—Methods 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/523—Motion estimation or motion compensation with sub-pixel accuracy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/56—Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Esta solicitud proporciona un método y aparato de codificación y decodificación de imágenes para una secuencia de video. El método de decodificación de imágenes en esta solicitud incluye: determinar información de movimiento de un bloque que se va a decodificar; obtener un primer bloque de predicción de decodificación del bloque que se va a decodificar con base en la información de movimiento; realizar búsqueda de movimiento con primera precisión en el bloque de imagen de referencia de predicción para obtener al menos dos segundos bloques de predicción de decodificación; realizar muestreo descendente en el primer bloque de predicción de decodificación para obtener un primer arreglo de píxeles de muestreo; realizar muestreo descendente en los al menos dos segundos bloques de predicción de decodificación para obtener al menos dos segundos arreglos de píxeles de muestreo; calcular una diferencia entre el primer arreglo de píxeles de muestreo y cada uno de los segundos arreglos de píxeles de muestreo, y usar, como un vector de movimiento de predicción objetivo, un vector de movimiento correspondiente a un segundo arreglo de píxeles de muestreo con una diferencia mínima; y obtener un bloque de predicción de decodificación objetivo del bloque que se va a decodificar con base en el vector de movimiento de predicción objetivo, y decodificar el bloque que se va a decodificar con base en el vector de movimiento de decodificación objetivo. En esta solicitud, se reduce una cantidad de cálculo de comparación de diferencias y se mejora la eficiencia de codificación de imágenes.
MX2021006391A 2018-11-30 2019-07-29 Método y aparato de codificación y decodificación de imágenes para secuencia de video. MX2021006391A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811458677.4A CN111263152B (zh) 2018-11-30 2018-11-30 视频序列的图像编解码方法和装置
PCT/CN2019/098151 WO2020107921A1 (zh) 2018-11-30 2019-07-29 视频序列的图像编解码方法和装置

Publications (1)

Publication Number Publication Date
MX2021006391A true MX2021006391A (es) 2021-09-10

Family

ID=70854462

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2021006391A MX2021006391A (es) 2018-11-30 2019-07-29 Método y aparato de codificación y decodificación de imágenes para secuencia de video.

Country Status (9)

Country Link
US (3) US11503317B2 (es)
JP (2) JP7273154B2 (es)
KR (1) KR20210094038A (es)
CN (2) CN111263152B (es)
BR (1) BR112021010415A2 (es)
CA (1) CA3121402C (es)
MX (1) MX2021006391A (es)
SG (1) SG11202105655SA (es)
WO (1) WO2020107921A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11412253B2 (en) * 2020-02-24 2022-08-09 Alibaba Group Holding Limited Methods for combining decoder side motion vector refinement with wrap-around motion compensation

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KR100994773B1 (ko) * 2004-03-29 2010-11-16 삼성전자주식회사 계층적 움직임 추정에 있어서 움직임 벡터 생성 방법 및장치
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Also Published As

Publication number Publication date
EP3879827A1 (en) 2021-09-15
US11503317B2 (en) 2022-11-15
US11818379B2 (en) 2023-11-14
WO2020107921A1 (zh) 2020-06-04
KR20210094038A (ko) 2021-07-28
SG11202105655SA (en) 2021-06-29
CA3121402A1 (en) 2020-06-04
US20210289220A1 (en) 2021-09-16
BR112021010415A2 (pt) 2021-08-24
JP2023100767A (ja) 2023-07-19
JP7273154B2 (ja) 2023-05-12
CA3121402C (en) 2024-03-05
CN111263152A (zh) 2020-06-09
CN113412619A (zh) 2021-09-17
US20240022748A1 (en) 2024-01-18
US20230030845A1 (en) 2023-02-02
CN111263152B (zh) 2021-06-01
JP2022509982A (ja) 2022-01-25

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