WO2020141831A3 - Image coding method and apparatus using intra block copy prediction - Google Patents

Image coding method and apparatus using intra block copy prediction Download PDF

Info

Publication number
WO2020141831A3
WO2020141831A3 PCT/KR2019/018713 KR2019018713W WO2020141831A3 WO 2020141831 A3 WO2020141831 A3 WO 2020141831A3 KR 2019018713 W KR2019018713 W KR 2019018713W WO 2020141831 A3 WO2020141831 A3 WO 2020141831A3
Authority
WO
WIPO (PCT)
Prior art keywords
block
vector difference
block vector
basis
prediction mode
Prior art date
Application number
PCT/KR2019/018713
Other languages
French (fr)
Korean (ko)
Other versions
WO2020141831A2 (en
Inventor
남정학
임재현
장형문
최정아
김승환
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2020141831A2 publication Critical patent/WO2020141831A2/en
Publication of WO2020141831A3 publication Critical patent/WO2020141831A3/en

Links

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
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques

Abstract

A method by which a decoding apparatus performs image decoding, according to the present document, comprises the steps of: acquiring, from a bitstream, prediction mode information about a current block and information related to a block vector difference; deriving a prediction mode of the current block as an intra block copy (IBC) prediction mode on the basis of the prediction mode information; deriving a block vector difference of the current block on the basis of the information related to the block vector difference; deriving a block vector of the current block on the basis of the block vector difference; and generating prediction samples of the current block on the basis of restoration samples in a current picture indicated by the block vector, wherein the information related to the block vector difference includes a syntax element about whether the absolute value of the block vector difference is greater than 0 and a syntax element about the sign of the block vector difference.
PCT/KR2019/018713 2018-12-31 2019-12-30 Image coding method and apparatus using intra block copy prediction WO2020141831A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US201862786552P 2018-12-31 2018-12-31
US62/786,552 2018-12-31
US201962814845P 2019-03-06 2019-03-06
US62/814,845 2019-03-06
US201962850549P 2019-05-21 2019-05-21
US62/850,549 2019-05-21
US201962860787P 2019-06-13 2019-06-13
US62/860,787 2019-06-13

Publications (2)

Publication Number Publication Date
WO2020141831A2 WO2020141831A2 (en) 2020-07-09
WO2020141831A3 true WO2020141831A3 (en) 2020-12-17

Family

ID=71406553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/018713 WO2020141831A2 (en) 2018-12-31 2019-12-30 Image coding method and apparatus using intra block copy prediction

Country Status (1)

Country Link
WO (1) WO2020141831A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114615504A (en) * 2020-12-04 2022-06-10 腾讯科技（深圳）有限公司 Video decoding method, video encoding method, device and equipment
WO2023193724A1 (en) * 2022-04-05 2023-10-12 Beijing Bytedance Network Technology Co., Ltd. Method, apparatus, and medium for video processing
WO2023198131A1 (en) * 2022-04-12 2023-10-19 Beijing Bytedance Network Technology Co., Ltd. Method, apparatus, and medium for video processing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101573334B1 (en) * 2014-08-07 2015-12-01 삼성전자주식회사 Method and apparatus for encoding and decoding image data
US20150373370A1 (en) * 2014-06-20 2015-12-24 Qualcomm Incorporated Intra block copy block vector signaling for video coding
US20150373334A1 (en) * 2014-06-20 2015-12-24 Qualcomm Incorporated Block vector coding for intra block copying
KR101660133B1 (en) * 2011-07-01 2016-09-26 퀄컴 인코포레이티드 Video coding using adaptive motion vector resolution
KR20170021302A (en) * 2014-06-19 2017-02-27 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 Unified intra block copy and inter prediction modes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101660133B1 (en) * 2011-07-01 2016-09-26 퀄컴 인코포레이티드 Video coding using adaptive motion vector resolution
KR20170021302A (en) * 2014-06-19 2017-02-27 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 Unified intra block copy and inter prediction modes
US20150373370A1 (en) * 2014-06-20 2015-12-24 Qualcomm Incorporated Intra block copy block vector signaling for video coding
US20150373334A1 (en) * 2014-06-20 2015-12-24 Qualcomm Incorporated Block vector coding for intra block copying
KR101573334B1 (en) * 2014-08-07 2015-12-01 삼성전자주식회사 Method and apparatus for encoding and decoding image data

Also Published As

Publication number Publication date
WO2020141831A2 (en) 2020-07-09

Similar Documents

Publication Publication Date Title
MX2021008449A (en) Image coding method and device using transform skip flag.
EP4290863A3 (en) Interaction between core transform and secondary transform
WO2020141831A3 (en) Image coding method and apparatus using intra block copy prediction
MX2023000074A (en) Video decoding method and device therefor, and video encoding method and device therefor.
EP4290864A3 (en) Image data encoding/decoding method and apparatus
KR102011491B1 (en) Method and apparatus for encoding and decoding to image using template matching
JP2017513305A (en) Method and decoder for decoding pictures
EP3253058A3 (en) Image displaying method including image encoding method and image decoding method
WO2019209444A3 (en) Method and apparatus for video coding
AU2024202188A1 (en) Method for coding transform coefficient on basis of high frequency zeroing and apparatus therefor
EP4262212A3 (en) Image decoding and encoding method by an apparatus based on motion prediction in sub-block unit in image coding system
MX2021008450A (en) Image coding method and device for carrying out mrl-based intra prediction.
MX2021002881A (en) Affine motion prediction-based image decoding method and apparatus using affine mvp candidate list in image coding system.
MX2021010127A (en) Method and apparatus for affine based inter prediction of chroma subblocks.
MX2021003245A (en) Conversion factor level coding method and device therefor.
MX2021002815A (en) Residual coding method and device for same.
MX2022002086A (en) Image decoding method and device for coding chroma quantization parameter offset-related information.
MX2022005103A (en) Method for transform-based image coding and apparatus therefor.
EP4283999A3 (en) Video decoding method, and video decoder
EP4277275A3 (en) Methods and apparatus of video coding for deriving affine motion vectors for chroma components
MX2022006190A (en) Image encoding/decoding method and device using lossless color transform, and method for transmitting bitstream.
MX2021015530A (en) Inter prediction-based image coding method and device.
JP2022140573A (en) Moving-image decoding device, moving-image decoding method and program
US10212436B2 (en) Image encoding apparatus, image decoding apparatus and image transmission method
MX2022002031A (en) Image decoding method using chroma quantization parameter, and apparatus therefor.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19907833

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19907833

Country of ref document: EP

Kind code of ref document: A2