WO2020251420A3 - Removing blocking artifacts inside coding unit predicted by intra block copy - Google Patents

Removing blocking artifacts inside coding unit predicted by intra block copy Download PDF

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Publication number
WO2020251420A3
WO2020251420A3 PCT/RU2020/050263 RU2020050263W WO2020251420A3 WO 2020251420 A3 WO2020251420 A3 WO 2020251420A3 RU 2020050263 W RU2020050263 W RU 2020050263W WO 2020251420 A3 WO2020251420 A3 WO 2020251420A3
Authority
WO
WIPO (PCT)
Prior art keywords
block
coding unit
block copy
intra block
blocking artifacts
Prior art date
Application number
PCT/RU2020/050263
Other languages
French (fr)
Other versions
WO2020251420A2 (en
Inventor
Alexander Alexandrovich KARABUTOV
Timofey Mikhailovich SOLOVYEV
Roman Igorevich CHERNYAK
Sergey Yurievich IKONIN
Elena Alexandrovna ALSHINA
Original Assignee
Huawei Technologies 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 Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP20822436.0A priority Critical patent/EP4029271A4/en
Publication of WO2020251420A2 publication Critical patent/WO2020251420A2/en
Publication of WO2020251420A3 publication Critical patent/WO2020251420A3/en

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    • 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
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • 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
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • 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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness

Abstract

A method of performing a deblocking filter for blocks predicted by using intra block copy prediction mode, the method performed by coding device, the method comprising the following steps: determining a position of a reference block, constructing a prediction for the current block from the reference block, performing a deblocking process for each color component, comprising: calculating the boundary strength for each sub-block of the current block in vertical direction, respectively, performing deblocking filtering in vertical direction, calculating the boundary strength for each sub-block of the current block in horizontal direction, respectively, and performing deblocking filtering in horizontal direction; wherein the size of each sub-block is at least 4x4.
PCT/RU2020/050263 2019-10-05 2020-10-02 Removing blocking artifacts inside coding unit predicted by intra block copy WO2020251420A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20822436.0A EP4029271A4 (en) 2019-10-05 2020-10-02 Removing blocking artifacts inside coding unit predicted by intra block copy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962911275P 2019-10-05 2019-10-05
US62/911,275 2019-10-05

Publications (2)

Publication Number Publication Date
WO2020251420A2 WO2020251420A2 (en) 2020-12-17
WO2020251420A3 true WO2020251420A3 (en) 2021-03-04

Family

ID=73786092

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2020/050263 WO2020251420A2 (en) 2019-10-05 2020-10-02 Removing blocking artifacts inside coding unit predicted by intra block copy

Country Status (2)

Country Link
EP (1) EP4029271A4 (en)
WO (1) WO2020251420A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113676727A (en) * 2021-08-18 2021-11-19 深圳市朗强科技有限公司 WIFI-based ultra-high-definition video sending and receiving method and device
WO2023246901A1 (en) * 2022-06-22 2023-12-28 Mediatek Inc. Methods and apparatus for implicit sub-block transform coding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160100163A1 (en) * 2014-10-07 2016-04-07 Qualcomm Incorporated Deblock filtering for intra block copying
US20170127090A1 (en) * 2014-05-29 2017-05-04 Canon Kabushiki Kaisha Method, apparatus and system for de-blocking a block of video samples
US20170302966A1 (en) * 2014-09-15 2017-10-19 Hfi Innovation Inc. Method of Deblocking for Intra Block Copy in Video Coding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2533905A (en) * 2014-10-06 2016-07-13 Canon Kk Method and apparatus for video coding and decoding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170127090A1 (en) * 2014-05-29 2017-05-04 Canon Kabushiki Kaisha Method, apparatus and system for de-blocking a block of video samples
US20170302966A1 (en) * 2014-09-15 2017-10-19 Hfi Innovation Inc. Method of Deblocking for Intra Block Copy in Video Coding
US20160100163A1 (en) * 2014-10-07 2016-04-07 Qualcomm Incorporated Deblock filtering for intra block copying

Also Published As

Publication number Publication date
WO2020251420A2 (en) 2020-12-17
EP4029271A4 (en) 2022-11-16
EP4029271A2 (en) 2022-07-20

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