EP4029247A2 - Verfahren und vorrichtung zur harmonisierung einer gewichteten prädiktion und bi-prädiktion mit gewichtung auf codiereinheitsebene - Google Patents

Verfahren und vorrichtung zur harmonisierung einer gewichteten prädiktion und bi-prädiktion mit gewichtung auf codiereinheitsebene

Info

Publication number
EP4029247A2
EP4029247A2 EP20822437.8A EP20822437A EP4029247A2 EP 4029247 A2 EP4029247 A2 EP 4029247A2 EP 20822437 A EP20822437 A EP 20822437A EP 4029247 A2 EP4029247 A2 EP 4029247A2
Authority
EP
European Patent Office
Prior art keywords
prediction
slice
weights
block
values
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20822437.8A
Other languages
English (en)
French (fr)
Other versions
EP4029247A4 (de
Inventor
Vasily Alexeevich RUFITSKIY
Alexey Konstantinovich FILIPPOV
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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
Publication of EP4029247A2 publication Critical patent/EP4029247A2/de
Publication of EP4029247A4 publication Critical patent/EP4029247A4/de
Pending legal-status Critical Current

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
    • H04N19/503—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
    • 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
    • H04N19/174—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 slice, e.g. a line of blocks or a group of blocks
    • 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Definitions

  • the normalized weights are obtained by multiplying BCW weights with corresponding values of the slice-level weighted parameters. As the BCW weights and potentially the slice-level weighted parameters are obtained in a computationally efficient way, this multiplication to obtain the normalized weights will need, in total, less computing resources. It can further be provided that updating the value of the predicted sample using the linear combined offset is combined with obtaining the value of the predicted sample (p) using the weighted prediction process.
  • the decoding unit is adapted to not perform determining the weights of slice-level weighted prediction parameters if at least one weight of any of the BCW weights is non-positive. This can reduce the risk of consistency issues arising during the prediction in case negative values of the BCW weights are combined with the slice-level weighted prediction parameters.
  • the decoding unit is adapted to select a slice-level weighted prediction process as weighted prediction process, when slice-level weighted prediction is enabled by slice-level weighted prediction parameters for at least one reference block.
  • the coding system 10 may comprise a source device 12 configured to provide encoded picture data 21 e.g. to a destination device 14 for decoding the encoded picture data 13.
  • the transform processing unit 206 may be configured to apply a transform, e.g. a discrete cosine transform (DCT) or discrete sine transform (DST), on the sample values of the residual block 205 to obtain transform coefficients 207 in a transform domain.
  • a transform e.g. a discrete cosine transform (DCT) or discrete sine transform (DST)
  • DCT discrete cosine transform
  • DST discrete sine transform
  • the inter prediction unit 244 may include a motion estimation (ME) unit and a motion compensation (MC) unit (both not shown in Fig.2).
  • the motion estimation unit may be configured to receive or obtain the picture block 203 (current picture block 203 of the current picture 17) and a decoded picture 231 , or at least one or a plurality of previously
  • a non-transform based encoder 20 can quantize the residual signal directly without the transform processing unit 206 for certain blocks or frames.
  • an encoder 20 can have the quantization unit 208 and the inverse quantization unit 210 combined into a single unit.
  • the decoder 30 is configured to output the decoded picture 311 , e.g. via output 312, for presentation or viewing to a user.
  • the video decoder 30 can be used to decode the encoded picture data 21.
  • the decoder 30 can produce the output video stream without the loop filtering unit 320.
  • a non-transform based decoder 30 can inverse-quantize the residual signal directly without the inverse-transform processing unit 312 for certain blocks or frames.
  • the video decoder 30 can have the inverse-quantization unit 310 and the inverse-transform processing unit 312 combined into a single unit.
  • Clip3( x, y, z) y z > y
  • Fig. 5 is a simplified block diagram of an apparatus 500 that may be used as either or both of the source device 12 and the destination device 14 from Fig. 1 according to an exemplary embodiment.
  • a processor 502 in the apparatus 500 can be a central processing unit.
  • the processor 502 can be any other type of device, or multiple devices, capable of manipulating or processing information now-existing or hereafter developed.
  • the disclosed implementations can be practiced with a single processor as shown, e.g., the processor 502, advantages in speed and efficiency can be achieved using more than one processor.
  • the apparatus 500 can also include one or more output devices, such as a display 518.
  • the display 518 may be, in one example, a touch sensitive display that combines a display with a touch sensitive element that is operable to sense touch inputs.
  • the display 518 can be coupled to the processor 502 via the bus 512.
  • variable cldx specifying the colour component index
  • variable wldx is derived as follows:
  • bitDepth the sample bit depth
  • variable offset3 is set equal to 1 « ( shift2 + 2 ).
  • the terminal device can feed the decoded data to its display.
  • NVR network video recorder
  • DVR digital video recorder
  • TV 3114 TV 3114
  • PDA personal digital assistant
  • vehicle mounted device 3124 the terminal device can feed the decoded data to its display.
  • NVR network video recorder
  • DVR digital video recorder
  • TV 3114 TV 3114
  • PDA personal digital assistant
  • vehicle mounted device 3124 the terminal device can feed the decoded data to its display.
  • a terminal device equipped with no display for example, STB 3116, video conference system 3118, or video surveillance system 3120, an external display 3126 is contacted therein to receive and show the decoded data.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
EP20822437.8A 2019-10-07 2020-10-07 Verfahren und vorrichtung zur harmonisierung einer gewichteten prädiktion und bi-prädiktion mit gewichtung auf codiereinheitsebene Pending EP4029247A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201962912044P 2019-10-07 2019-10-07
EP2019077256 2019-10-08
PCT/RU2020/050274 WO2020251423A2 (en) 2019-10-07 2020-10-07 Method and apparatus of harmonizing weighted prediction and bi-prediction with coding-unit-level weight

Publications (2)

Publication Number Publication Date
EP4029247A2 true EP4029247A2 (de) 2022-07-20
EP4029247A4 EP4029247A4 (de) 2022-12-07

Family

ID=73786084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20822437.8A Pending EP4029247A4 (de) 2019-10-07 2020-10-07 Verfahren und vorrichtung zur harmonisierung einer gewichteten prädiktion und bi-prädiktion mit gewichtung auf codiereinheitsebene

Country Status (2)

Country Link
EP (1) EP4029247A4 (de)
WO (1) WO2020251423A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12231647B2 (en) * 2021-11-30 2025-02-18 Tencent America LLC Scene transition detection based encoding methods for BCW

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8731054B2 (en) * 2004-05-04 2014-05-20 Qualcomm Incorporated Method and apparatus for weighted prediction in predictive frames
MY173195A (en) * 2011-06-28 2020-01-03 Samsung Electronics Co Ltd Method and apparatus for image encoding and decoding using intra prediction
WO2013168952A1 (ko) * 2012-05-08 2013-11-14 엘지전자 주식회사 인터 레이어 예측 방법 및 이를 이용하는 장치
WO2016137149A1 (ko) * 2015-02-24 2016-09-01 엘지전자(주) 폴리곤 유닛 기반 영상 처리 방법 및 이를 위한 장치
EP3855748B8 (de) * 2018-09-21 2024-12-11 Sharp Kabushiki Kaisha Bilddekodierungsapparat
EP3672253A1 (de) * 2018-12-21 2020-06-24 InterDigital VC Holdings, Inc. Verfahren und vorrichtung zur bildcodierung und -decodierung

Also Published As

Publication number Publication date
EP4029247A4 (de) 2022-12-07
WO2020251423A3 (en) 2021-03-04
WO2020251423A2 (en) 2020-12-17

Similar Documents

Publication Publication Date Title
US11962792B2 (en) Method and apparatus of weighted prediction for non-rectangular partitioning modes
US20220124343A1 (en) Method and Apparatus of Local Illumination Compensation for Inter Prediction
US12166967B2 (en) Harmonizing triangular merge mode with weighted prediction
US12301857B2 (en) Method and apparatus of harmonizing triangular merge mode with weighted prediction
US11412215B2 (en) Apparatuses and methods for encoding and decoding based on syntax element values
WO2021045658A9 (en) Method and apparatus of harmonizing weighted prediction with non-rectangular merge modes
US12464167B2 (en) Method and apparatus of high-level signaling for weighted prediction
WO2021045659A2 (en) Method and apparatus of signaling the number of candidates for merge mode
US12363277B2 (en) Method and apparatus of harmonizing weighted prediction with non-rectangular merge modes
WO2020251422A2 (en) Method and apparatus of adaptive adjustment of weighting prediction parameter precision for harmonizing non-rectangular merge mode and weighted prediction
CA3144792A1 (en) Sample distance calculation for geometric partition mode
EP4026321B1 (de) Harmonisierende gewichtete vorhersage mit affiner modellbasierter bewegungskompensation
WO2020251423A2 (en) Method and apparatus of harmonizing weighted prediction and bi-prediction with coding-unit-level weight
WO2021068738A1 (en) Method and apparatus of adaptive adjustment of weighting prediction parameter precision
WO2021134393A1 (en) Method and apparatus of deblocking filtering between boundaries of blocks predicted using weighted prediction and non-rectangular merge modes

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220411

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: H04N0019105000

Ipc: H04N0019577000

A4 Supplementary search report drawn up and despatched

Effective date: 20221104

RIC1 Information provided on ipc code assigned before grant

Ipc: H04N 19/70 20140101ALI20221028BHEP

Ipc: H04N 19/577 20140101AFI20221028BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20260312