JPWO2020047132A5 - - Google Patents
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- JPWO2020047132A5 JPWO2020047132A5 JP2021510159A JP2021510159A JPWO2020047132A5 JP WO2020047132 A5 JPWO2020047132 A5 JP WO2020047132A5 JP 2021510159 A JP2021510159 A JP 2021510159A JP 2021510159 A JP2021510159 A JP 2021510159A JP WO2020047132 A5 JPWO2020047132 A5 JP WO2020047132A5
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- motion vector
- control point
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Claims (14)
少なくとも第1の差分動きベクトル及び第2の差分動きベクトルを取得することと、
利用可能な精度の第1の組のうちからの前記第1及び第2の差分動きベクトルの精度を特定する情報を取得することであって、前記利用可能な精度の第1の組は、非アフィンインター符号化について利用可能な精度の第2の組とは異なる、取得することと、
少なくとも(i)前記第1の動きベクトル予測子及び前記第1の差分動きベクトルから第1の制御点動きベクトルと、(ii)前記第2の動きベクトル予測子及び前記第2の差分動きベクトルから第2の制御点動きベクトルとを生成することと、
アフィン動きモデルを使用して前記ブロックの予測を生成することであって、前記アフィン動きモデルが、少なくとも前記第1の制御点動きベクトル及び前記第2の制御点動きベクトルによって特徴付けられる、ことと
を含む、ビデオを符号化する又は復号する方法。 obtaining information identifying at least a first motion vector predictor and a second motion vector predictor for an affine coded block in a video;
obtaining at least a first differential motion vector and a second differential motion vector;
obtaining information identifying the accuracies of the first and second differential motion vectors from among a first set of available accuracies, wherein the first set of available accuracies is non- obtaining a second set of accuracies different from those available for affine inter-coding ;
at least (i) a first control point motion vector from the first motion vector predictor and the first differential motion vector; and (ii) from the second motion vector predictor and the second differential motion vector. generating a second control point motion vector;
generating a prediction for the block using an affine motion model, wherein the affine motion model is characterized by at least the first control point motion vector and the second control point motion vector; A method of encoding or decoding video comprising:
少なくとも第1の差分動きベクトル及び第2の差分動きベクトルを取得することと、
利用可能な精度の第1の組のうちからの前記第1及び第2の差分動きベクトルの精度を特定する情報を取得することであって、前記利用可能な精度の第1の組は、非アフィンインター符号化について利用可能な精度の第2の組とは異なる、取得することと、
少なくとも(i)前記第1の動きベクトル予測子及び前記第1の差分動きベクトルから第1の制御点動きベクトルと、(ii)前記第2の動きベクトル予測子及び前記第2の差分動きベクトルから第2の制御点動きベクトルとを生成することと、
アフィン動きモデルを使用して前記ブロックの予測を生成することであって、前記アフィン動きモデルが、少なくとも前記第1の制御点動きベクトル及び前記第2の制御点動きベクトルによって特徴付けられる、ことと
を少なくとも実行するように構成された少なくとも1つのプロセッサを備えた、ビデオ符号化器装置又は復号器装置。 obtaining information identifying at least a first motion vector predictor and a second motion vector predictor for an affine coded block in a video;
obtaining at least a first differential motion vector and a second differential motion vector;
obtaining information identifying the accuracies of the first and second differential motion vectors from among a first set of available accuracies, wherein the first set of available accuracies is non- obtaining a second set of accuracies different from those available for affine inter-coding ;
at least (i) a first control point motion vector from the first motion vector predictor and the first differential motion vector; and (ii) from the second motion vector predictor and the second differential motion vector. generating a second control point motion vector;
generating a prediction for the block using an affine motion model, wherein the affine motion model is characterized by at least the first control point motion vector and the second control point motion vector; A video encoder or decoder apparatus comprising at least one processor configured to at least perform
ビットストリームから、第3の動きベクトル予測子を特定する情報を読み取ることと、
前記ビットストリームから、前記特定された精度を有する第3の差分動きベクトルを読み取ることと、
前記第3の動きベクトル予測子及び前記第3の差分動きベクトルから第3の制御点動きベクトルを生成することであって、
前記アフィン動きモデルが、前記第1の制御点動きベクトル、前記第2の制御点動きベクトル、及び前記第3の制御点動きベクトルによって特徴付けられる、ことと
を更に含む、請求項1に記載の方法又は請求項2に記載の装置。 the affine motion model is a 6-parameter motion model;
reading from the bitstream information identifying a third motion vector predictor;
reading a third differential motion vector having the specified precision from the bitstream;
generating a third control point motion vector from the third motion vector predictor and the third differential motion vector,
2. The method of claim 1, further comprising: said affine motion model is characterized by said first control point motion vector, said second control point motion vector, and said third control point motion vector. 3. A method or apparatus according to claim 2.
前記アフィン動きモデルを使用して、前記ブロックの複数のサブブロックのそれぞれについてそれぞれのサブブロック動きベクトルを決定することと、
前記それぞれのサブブロック動きベクトルを使用して、前記サブブロックのそれぞれのインター予測を生成することと
を含む、請求項1に記載の方法又は請求項2に記載の装置。 generating a prediction for the block;
determining a respective sub-block motion vector for each of a plurality of sub-blocks of the block using the affine motion model;
using the respective sub-block motion vectors to generate respective inter-predictions for the sub - blocks.
前記残差を前記ブロックの前記予測に加えることにより前記ブロックを再構成することと
を更に含む、請求項1に記載の方法。 reading a residual for the block from a bitstream;
2. The method of claim 1, further comprising: reconstructing the block by adding the residual to the prediction of the block.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862724500P | 2018-08-29 | 2018-08-29 | |
US62/724,500 | 2018-08-29 | ||
US201862773069P | 2018-11-29 | 2018-11-29 | |
US62/773,069 | 2018-11-29 | ||
US201862786768P | 2018-12-31 | 2018-12-31 | |
US62/786,768 | 2018-12-31 | ||
PCT/US2019/048615 WO2020047132A1 (en) | 2018-08-29 | 2019-08-28 | Adaptive motion vector precision for affine motion model based video coding |
Publications (2)
Publication Number | Publication Date |
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JP2021536686A JP2021536686A (en) | 2021-12-27 |
JPWO2020047132A5 true JPWO2020047132A5 (en) | 2022-09-06 |
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JP2021510159A Pending JP2021536686A (en) | 2018-08-29 | 2019-08-28 | Adaptive motion vector accuracy for affine motion model-based video coding |
Country Status (5)
Country | Link |
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US (2) | US11582458B2 (en) |
EP (1) | EP3844955A1 (en) |
JP (1) | JP2021536686A (en) |
CN (1) | CN112640452B (en) |
WO (1) | WO2020047132A1 (en) |
Families Citing this family (18)
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BR112020005097A2 (en) * | 2017-09-28 | 2020-09-15 | Samsung Electronics Co., Ltd. | video decoding method, video decoding apparatus, video encoding method, and video encoding apparatus |
GB2589221B (en) | 2018-06-19 | 2023-03-22 | Beijing Bytedance Network Tech Co Ltd | Mode dependent MVD precision set |
WO2020006304A1 (en) | 2018-06-29 | 2020-01-02 | Vid Scale, Inc. | Adaptive control point selection for affine motion model based video coding |
WO2020058886A1 (en) | 2018-09-19 | 2020-03-26 | Beijing Bytedance Network Technology Co., Ltd. | Fast algorithms for adaptive motion vector resolution in affine mode |
WO2020060366A1 (en) * | 2018-09-22 | 2020-03-26 | 엘지전자 주식회사 | Method and apparatus for processing video signals on basis of inter prediction |
KR20230161543A (en) * | 2018-09-23 | 2023-11-27 | 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 | Modification of motion vector with adaptive motion vector resolution |
WO2020084510A1 (en) * | 2018-10-23 | 2020-04-30 | Beijing Bytedance Network Technology Co., Ltd. | Adaptive control point selection for affine coding |
CN113412623A (en) | 2019-01-31 | 2021-09-17 | 北京字节跳动网络技术有限公司 | Recording context of affine mode adaptive motion vector resolution |
JP7215243B2 (en) * | 2019-03-08 | 2023-01-31 | 株式会社Jvcケンウッド | image coding device |
US11290722B2 (en) * | 2019-03-12 | 2022-03-29 | Tencent America LLC | Method and apparatus for video encoding or decoding |
CN114365490B (en) | 2019-09-09 | 2024-06-18 | 北京字节跳动网络技术有限公司 | Coefficient scaling for high precision image and video codecs |
JP7323712B2 (en) | 2019-09-21 | 2023-08-08 | 北京字節跳動網絡技術有限公司 | Precision transform and quantization for image and video coding |
US11758151B2 (en) * | 2020-12-29 | 2023-09-12 | Qualcomm Incorporated | Template matching in video coding |
US11936877B2 (en) * | 2021-04-12 | 2024-03-19 | Qualcomm Incorporated | Template matching based affine prediction for video coding |
US20230128313A1 (en) * | 2021-10-21 | 2023-04-27 | Tencent America LLC | Adaptive Resolution for Single-Reference Motion Vector Difference |
US11979596B2 (en) * | 2022-02-07 | 2024-05-07 | Tencent America LLC | Joint coding for adaptive motion vector difference resolution |
US20240089487A1 (en) * | 2022-09-09 | 2024-03-14 | Tencent America LLC | Systems and methods for subblock motion vector coding |
WO2024104483A1 (en) * | 2022-11-18 | 2024-05-23 | Douyin Vision Co., Ltd. | Method, apparatus, and medium for video processing |
Family Cites Families (8)
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GB2561507B (en) * | 2016-01-07 | 2021-12-22 | Mediatek Inc | Method and apparatus for affine merge mode prediction for video coding system |
WO2017156705A1 (en) * | 2016-03-15 | 2017-09-21 | Mediatek Inc. | Affine prediction for video coding |
CN113612994B (en) | 2016-03-15 | 2023-10-27 | 寰发股份有限公司 | Method for video coding and decoding with affine motion compensation |
US10462462B2 (en) | 2016-09-29 | 2019-10-29 | Qualcomm Incorporated | Motion vector difference coding technique for video coding |
US10979732B2 (en) * | 2016-10-04 | 2021-04-13 | Qualcomm Incorporated | Adaptive motion vector precision for video coding |
CN116708780A (en) * | 2017-08-11 | 2023-09-05 | 华为技术有限公司 | Method, device and equipment for encoding and decoding video image |
CN118301334A (en) * | 2018-07-11 | 2024-07-05 | 华为技术有限公司 | Video encoder, video decoder and corresponding methods |
US11076169B2 (en) * | 2019-05-14 | 2021-07-27 | Qualcomm Incorporated | Switchable interpolation filtering (SIF) for video coding |
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2019
- 2019-08-28 WO PCT/US2019/048615 patent/WO2020047132A1/en unknown
- 2019-08-28 EP EP19766413.9A patent/EP3844955A1/en active Pending
- 2019-08-28 JP JP2021510159A patent/JP2021536686A/en active Pending
- 2019-08-28 CN CN201980055939.9A patent/CN112640452B/en active Active
- 2019-08-28 US US17/269,937 patent/US11582458B2/en active Active
-
2022
- 2022-12-27 US US18/089,027 patent/US20230136599A1/en active Pending
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