WO2018175720A1 - Constraining motion vector information derived by decoder-side motion vector derivation - Google Patents

Constraining motion vector information derived by decoder-side motion vector derivation Download PDF

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Publication number
WO2018175720A1
WO2018175720A1 PCT/US2018/023761 US2018023761W WO2018175720A1 WO 2018175720 A1 WO2018175720 A1 WO 2018175720A1 US 2018023761 W US2018023761 W US 2018023761W WO 2018175720 A1 WO2018175720 A1 WO 2018175720A1
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WO
WIPO (PCT)
Prior art keywords
motion vector
derived
poc
diff
difference
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.)
Ceased
Application number
PCT/US2018/023761
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English (en)
French (fr)
Inventor
Marta Karczewicz
Yi-Wen Chen
Wei-Jung Chien
Hsiao-Chiang Chuang
Xiang Li
Jianle Chen
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.)
Qualcomm Inc
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Qualcomm Inc
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
Priority to RU2019133109A priority Critical patent/RU2767144C2/ru
Priority to AU2018237346A priority patent/AU2018237346A1/en
Priority to JP2019551632A priority patent/JP7233376B2/ja
Priority to CA3053479A priority patent/CA3053479C/en
Priority to MYPI2019004629A priority patent/MY195629A/en
Priority to MX2019011318A priority patent/MX2019011318A/es
Priority to SG11201907531X priority patent/SG11201907531XA/en
Priority to NZ756271A priority patent/NZ756271B2/en
Priority to EP18716799.4A priority patent/EP3603069A1/en
Priority to BR112019019210-7A priority patent/BR112019019210A2/pt
Priority to KR1020197030837A priority patent/KR102725370B1/ko
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to CN201880019566.5A priority patent/CN110431845B/zh
Publication of WO2018175720A1 publication Critical patent/WO2018175720A1/en
Priority to IL268646A priority patent/IL268646B/en
Priority to PH12019501895A priority patent/PH12019501895A1/en
Priority to SA519410050A priority patent/SA519410050B1/ar
Priority to CONC2019/0010076A priority patent/CO2019010076A2/es
Priority to ZA2019/06240A priority patent/ZA201906240B/en
Anticipated expiration legal-status Critical
Priority to AU2023200756A priority patent/AU2023200756A1/en
Ceased legal-status Critical Current

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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
    • H04N19/503—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
    • H04N19/44—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
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/587—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence

Definitions

  • DMVD a plurality of derived motion vectors
  • means for determining a first derived motion vector and a second derived motion vector from the plurality of derived motion vectors based on a cost metric comprising: means for determining that the first derived motion vector and the second derived motion vector satisfy at least one constraint on a relationship between the first derived motion vector and the second derived motion vector, the relationship comprising: the first derived motion vector and the second derived motion vector have a symmetric motion vector difference, the first derived motion vector and the second derived motion vector have a pseudo symmetric motion vector difference, the first derived motion vector and the second derived motion vector are anti-symmetric, the first derived motion vector and the second derived motion vector have an anti-symmetric motion vector difference, or the first derived motion vector and the second derived motion vector have a pseudo anti -symmetric motion vector difference, and means for encoding a current block using the determined first derived motion vector and the second derived motion vector using bi-prediction.
  • this disclosure describes a computer-readable storage medium storing instructions that, when executed, cause one or more processors of a device configured to generate, using decoder-side motion vector derivation (DMVD), a plurality of derived motion vectors, determine a first derived motion vector and a second derived motion vector from the plurality of derived motion vectors based on a cost metric, comprising: a determination that the first derived motion vector and the second derived motion vector satisfy at least one constraint on a relationship between the first derived motion vector and the second derived motion vector, the relationship comprising: the first derived motion vector and the second derived motion vector have a symmetric motion vector difference, the first derived motion vector and the second derived motion vector have a pseudo symmetric motion vector difference, the first derived motion vector and the second derived motion vector are anti-symmetric, the first derived motion vector and the second derived motion vector have an anti-symmetric motion vector difference, or the first derived motion vector and the second derived motion vector have a pseudo
  • this disclosure describes techniques for deriving motion information (e.g., one or more motion vectors, a motion vector and/or motion vector difference precision, and one or more reference picture indexes) used to encode blocks of video data and for determining by a video decoder the same motion information as that determined by the video encoder.
  • a video decoder may determine, without receiving any syntax elements specifically identifying the motion information, what motion information was used to encode the video data. In some coding scenarios, however, the video encoder may still explicitly signal the motion information used to encode the block.
  • ITU-T VCEG Q6/16
  • ISO/IEC MPEG JTC 1/SC 29/WG 11
  • JEM 5 Joint Exploration Model 5
  • Source device 12 and destination device 14 are merely examples of such coding devices in which source device 12 generates coded video data for transmission to destination device 14.
  • devices 12, 14 may operate in a substantially symmetrical manner such that each of devices 12, 14 include video encoding and decoding components.
  • system 10 may support oneway or two-way video transmission between video devices 12, 14, e.g., for video streaming, video playback, video broadcasting, or video telephony.
  • video encoder 20 and video decoder 30 may each be integrated with an audio encoder and decoder, and may include appropriate MUX-DEMUX units, or other hardware and software, to handle encoding of both audio and video in a common data stream or separate data streams. If applicable, MUX-DEMUX units may conform to the ITU H.223 multiplexer protocol, or other protocols such as the user datagram protocol (UDP).
  • MUX-DEMUX units may conform to the ITU H.223 multiplexer protocol, or other protocols such as the user datagram protocol (UDP).
  • corresponding to the CU includes four leaf nodes, each of which corresponds to one of the sub-CUs.
  • a CU includes a coding node and prediction units (PUs) and transform units (TUs) associated with the coding node.
  • a size of the CU corresponds to a size of the coding node and is generally square in shape.
  • the size of the CU may range from 8x8 pixels up to the size of the CTU with a maximum size, e.g., 64x64 pixels or greater.
  • Each CU may contain one or more PUs and one or more TUs.
  • Syntax data associated with a CU may describe, for example, partitioning of the CU into one or more PUs. Partitioning modes may differ between whether the CU is skip or direct mode encoded, intra-prediction mode encoded, or inter-prediction mode encoded.
  • Bi-directional template matching may be implemented based on uni-directional template matching.
  • a matched template To is first found in the first step of template matching from ListO reference pictures (800).
  • ListO here is only taken as an example.
  • the initial template can be determined with initial motion information of the current block which is available before performing the first template matching.
  • the reference picture list corresponding to minimal initial template distortion cost will be used in the first step of template matching. For example, if initial template distortion cost corresponding to listO is no larger than cost corresponding to Listl, ListO is used in the first step of template matching and Listl is used in the second step), then, the current template Tc of current block is updated as follows:
  • CURR POC Picture Order Count (e.g., POC as
  • a video coder may be configured to check or determine a POC difference by being configured to use, for example, the POC information of the initial MVs and/or the POC information of the derived MVs.
  • a video coder e.g., video encoder 20 or video decoder 30
  • video decoder 30 may be configured to determine that a first initial motion vector in a motion vector candidate list and a second initial motion vector in the motion vector candidate list satisfy at least one condition on a relationship between the first initial motion vector and the second initial motion vector, the relationship comprising: the first initial motion vector and the second initial motion vector are symmetric, the first initial motion vector and the second initial motion vector are pseudo symmetric, the first initial motion vector and the second initial motion vector have the symmetric motion vector difference, the first initial motion vector and the second initial motion vector are anti-symmetric, are the first initial motion vector and the second initial motion vector pseudo anti-symmetric, or the first initial motion vector and the second initial motion vector have the anti-symmetric motion vector difference, wherein generating the plurality of derived motion vectors is based on the first initial motion vector and the second initial motion satisfying the at least one condition.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
PCT/US2018/023761 2017-03-22 2018-03-22 Constraining motion vector information derived by decoder-side motion vector derivation Ceased WO2018175720A1 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
KR1020197030837A KR102725370B1 (ko) 2017-03-22 2018-03-22 디코더 측 모션 벡터 도출에 의해 도출된 모션 벡터 정보의 제약
JP2019551632A JP7233376B2 (ja) 2017-03-22 2018-03-22 復号器側動きベクトル導出によって導出された動きベクトル情報を制約すること
CA3053479A CA3053479C (en) 2017-03-22 2018-03-22 Constraining motion vector information derived by decoder-side motion vector derivation
MYPI2019004629A MY195629A (en) 2017-03-22 2018-03-22 Constraining Motion Vector Information Derived By Decoder-Side Motion Vector Derivation
MX2019011318A MX2019011318A (es) 2017-03-22 2018-03-22 Informacion del vector de movimiento de restriccion derivada por la derivacion del vector de movimiento del lado de decodificacion.
SG11201907531X SG11201907531XA (en) 2017-03-22 2018-03-22 Constraining motion vector information derived by decoder-side motion vector derivation
NZ756271A NZ756271B2 (en) 2018-03-22 Constraining motion vector information derived by decoder-side motion vector derivation
EP18716799.4A EP3603069A1 (en) 2017-03-22 2018-03-22 Constraining motion vector information derived by decoder-side motion vector derivation
CN201880019566.5A CN110431845B (zh) 2017-03-22 2018-03-22 约束通过解码器侧运动向量推导导出的运动向量信息
RU2019133109A RU2767144C2 (ru) 2017-03-22 2018-03-22 Ограничение информации вектора движения, извлекаемой посредством извлечения векторов движения на стороне декодера
AU2018237346A AU2018237346A1 (en) 2017-03-22 2018-03-22 Constraining motion vector information derived by decoder-side motion vector derivation
BR112019019210-7A BR112019019210A2 (pt) 2017-03-22 2018-03-22 informação de vetor de movimento de restrição derivada por derivação de vetor de movimento de lado de decodificador
IL268646A IL268646B (en) 2017-03-22 2019-08-12 Constraining motion vector information derived by decoder-side motion vector derivation
PH12019501895A PH12019501895A1 (en) 2017-03-22 2019-08-15 Constraining motion vector information derived by decoder-side motion vector derivation
SA519410050A SA519410050B1 (ar) 2017-03-22 2019-09-05 تقييد معلومات متجه حركة مشتقة عن طريق اشتقاق متجه حركة لجانب وحدة فك تشفير
CONC2019/0010076A CO2019010076A2 (es) 2017-03-22 2019-09-18 Restricción de información de vectores de movimiento derivada mediante derivación de vectores de movimiento en el lado del decodificador
ZA2019/06240A ZA201906240B (en) 2017-03-22 2019-09-20 Constraining motion vector information derived by decoder-side motion vector derivation
AU2023200756A AU2023200756A1 (en) 2017-03-22 2023-02-10 Constraining motion vector information derived by decoder-side motion vector derivation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762475177P 2017-03-22 2017-03-22
US62/475,177 2017-03-22
US15/927,854 US10595035B2 (en) 2017-03-22 2018-03-21 Constraining motion vector information derived by decoder-side motion vector derivation
US15/927,854 2018-03-21

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WO2018175720A1 true WO2018175720A1 (en) 2018-09-27

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EP (1) EP3603069A1 (https=)
JP (2) JP7233376B2 (https=)
KR (1) KR102725370B1 (https=)
CN (1) CN110431845B (https=)
AU (2) AU2018237346A1 (https=)
BR (1) BR112019019210A2 (https=)
CL (1) CL2019002680A1 (https=)
CO (1) CO2019010076A2 (https=)
IL (1) IL268646B (https=)
MX (1) MX2019011318A (https=)
MY (1) MY195629A (https=)
PH (1) PH12019501895A1 (https=)
RU (1) RU2767144C2 (https=)
SA (1) SA519410050B1 (https=)
SG (1) SG11201907531XA (https=)
WO (1) WO2018175720A1 (https=)
ZA (1) ZA201906240B (https=)

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