PL3523966T3 - Systemy i sposoby przełączania filtrów interpolacyjnych - Google Patents

Systemy i sposoby przełączania filtrów interpolacyjnych

Info

Publication number
PL3523966T3
PL3523966T3 PL17790899.3T PL17790899T PL3523966T3 PL 3523966 T3 PL3523966 T3 PL 3523966T3 PL 17790899 T PL17790899 T PL 17790899T PL 3523966 T3 PL3523966 T3 PL 3523966T3
Authority
PL
Poland
Prior art keywords
systems
methods
interpolation filters
switching interpolation
switching
Prior art date
Application number
PL17790899.3T
Other languages
English (en)
Polish (pl)
Inventor
Sungwon Lee
Wei-Jung Chien
Kai Zhang
Jianle Chen
Marta Karczewicz
Original Assignee
Qualcomm Incorporated
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 Qualcomm Incorporated filed Critical Qualcomm Incorporated
Publication of PL3523966T3 publication Critical patent/PL3523966T3/pl

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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
    • 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
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • 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
    • H04N19/10—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
    • H04N19/184—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 bits, e.g. of the compressed video stream
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/521—Processing of motion vectors for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the motion vector field or for correcting 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
    • H04N19/50—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
    • H04N19/523—Motion estimation or motion compensation with sub-pixel accuracy
    • 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
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Peptides Or Proteins (AREA)
  • Complex Calculations (AREA)
PL17790899.3T 2016-10-05 2017-10-05 Systemy i sposoby przełączania filtrów interpolacyjnych PL3523966T3 (pl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201662404749P 2016-10-05 2016-10-05
US15/724,155 US10341659B2 (en) 2016-10-05 2017-10-03 Systems and methods of switching interpolation filters
PCT/US2017/055390 WO2018067848A1 (en) 2016-10-05 2017-10-05 Systems and methods of switching interpolation filters

Publications (1)

Publication Number Publication Date
PL3523966T3 true PL3523966T3 (pl) 2026-08-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL17790899.3T PL3523966T3 (pl) 2016-10-05 2017-10-05 Systemy i sposoby przełączania filtrów interpolacyjnych

Country Status (10)

Country Link
US (1) US10341659B2 (enExample)
EP (1) EP3523966B1 (enExample)
JP (2) JP7317703B2 (enExample)
KR (1) KR102546383B1 (enExample)
CN (2) CN116347075B (enExample)
ES (1) ES3073642T3 (enExample)
PL (1) PL3523966T3 (enExample)
SG (1) SG11201901631SA (enExample)
TW (1) TWI775780B (enExample)
WO (1) WO2018067848A1 (enExample)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10701402B2 (en) * 2017-10-02 2020-06-30 Arris Enterprises Llc System and method for reducing blocking artifacts and providing improved coding efficiency
EP3468194A1 (en) * 2017-10-05 2019-04-10 Thomson Licensing Decoupled mode inference and prediction
US10582212B2 (en) * 2017-10-07 2020-03-03 Google Llc Warped reference motion vectors for video compression
US10841610B2 (en) * 2017-10-23 2020-11-17 Avago Technologies International Sales Pte. Limited Block size dependent interpolation filter selection and mapping
US11825117B2 (en) 2018-01-15 2023-11-21 Samsung Electronics Co., Ltd. Encoding method and apparatus therefor, and decoding method and apparatus therefor
MX2021001515A (es) * 2018-09-07 2021-04-13 Huawei Tech Co Ltd Metodo y aparato para filtrado de interpolacion para intra- e inter - prediccion en codificacion de video.
CN112715030B (zh) 2018-09-21 2024-04-23 Vid拓展公司 用于双向光流的复杂度降低和位宽控制
CN111010568B (zh) * 2018-10-06 2023-09-29 华为技术有限公司 插值滤波器的训练方法、装置及视频图像编解码方法、编解码器
CN112970259B (zh) 2018-11-05 2024-06-28 北京字节跳动网络技术有限公司 视频处理中具有细化的帧间预测
PL3891980T3 (pl) * 2018-12-21 2024-08-26 Huawei Technologies Co., Ltd. Sposób i urządzenie do filtrowania interpolacyjnego do kodowania predykcyjnego
EP3888363B1 (en) 2018-12-28 2023-10-25 Huawei Technologies Co., Ltd. Method and apparatus of sharpening interpolation filtering for predictive coding
WO2020146505A1 (en) * 2019-01-08 2020-07-16 Tencent America LLC Method and apparatus for memory bandwidth reduction for small inter blocks
WO2020184526A1 (ja) * 2019-03-11 2020-09-17 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 符号化装置、復号装置、符号化方法、及び復号方法
KR20260053417A (ko) * 2019-03-11 2026-04-21 알리바바 이노베이션 프라이빗 리미티드 병합 모드를 위한 예측 가중치를 결정하는 방법, 디바이스, 및 시스템
CN118945340A (zh) * 2019-03-12 2024-11-12 弗劳恩霍夫应用研究促进协会 用于混合视频编码的编码器、解码器、方法及视频比特流以及计算机程序
US11178415B2 (en) * 2019-03-12 2021-11-16 Tencent America LLC Signaling of CU based interpolation filter selection
CN121217934A (zh) * 2019-03-28 2025-12-26 交互数字Ce专利控股公司 用于视频编码和解码的帧间预测参数推导
EP3932058A4 (en) 2019-04-01 2022-06-08 Beijing Bytedance Network Technology Co., Ltd. USING HISTORY INTERPOLATION FILTERS BASED ON MOTION VECTOR PREDICTION
EP3928521A4 (en) 2019-04-02 2022-08-17 Beijing Bytedance Network Technology Co., Ltd. BIDIRECTIONAL OPTICAL FLOW BASED VIDEO ENCODING AND DECODING
KR20250052470A (ko) * 2019-04-19 2025-04-18 후아웨이 테크놀러지 컴퍼니 리미티드 현재 블록에 대한 보간 필터 인덱스를 도출하는 방법 및 장치
WO2020211866A1 (en) 2019-04-19 2020-10-22 Beijing Bytedance Network Technology Co., Ltd. Applicability of prediction refinement with optical flow process
KR102662024B1 (ko) 2019-04-19 2024-05-21 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 상이한 모션 벡터 정제의 그레디언트 계산
WO2020211867A1 (en) 2019-04-19 2020-10-22 Beijing Bytedance Network Technology Co., Ltd. Delta motion vector in prediction refinement with optical flow process
JP7522135B2 (ja) * 2019-05-11 2024-07-24 北京字節跳動網絡技術有限公司 複数のイントラ符号化方法の相互作用
US11076169B2 (en) * 2019-05-14 2021-07-27 Qualcomm Incorporated Switchable interpolation filtering (SIF) for video coding
US11109041B2 (en) * 2019-05-16 2021-08-31 Tencent America LLC Method and apparatus for video coding
WO2020244545A1 (en) * 2019-06-05 2020-12-10 Beijing Bytedance Network Technology Co., Ltd. Interaction between motion vector refinements and other coding tools
CN114097219B (zh) * 2019-07-04 2026-03-31 北京字节跳动网络技术有限公司 基于历史的运动矢量预测表中的运动信息的存储
US11563933B2 (en) * 2019-07-09 2023-01-24 Qualcomm Incorporated Reference picture resampling with switchable filters
CA3148751A1 (en) * 2019-08-05 2021-02-11 Lg Electronics Inc. Video encoding/decoding method and apparatus using motion information candidate, and method for transmitting bitstream
CN117395411A (zh) 2019-08-20 2024-01-12 北京字节跳动网络技术有限公司 用于视频处理的方法、装置以及计算机可读存储介质
CN120201195A (zh) * 2019-08-23 2025-06-24 北京三星通信技术研究有限公司 帧内预测方法和帧内预测装置
WO2021043166A1 (en) * 2019-09-02 2021-03-11 Beijing Bytedance Network Technology Co., Ltd. Improvement of merge candidates
BR112022001485A2 (pt) * 2019-09-04 2022-05-24 Interdigital Vc Holdings France Sas Filtros de interpolação comutáveis
US11375222B2 (en) * 2019-09-22 2022-06-28 Tencent America LLC Method and device for video encoding and decoding with interpolation filter flag being consistent with MMVD distances
CN113596460A (zh) * 2019-09-23 2021-11-02 杭州海康威视数字技术股份有限公司 编解码方法方法、装置及设备
WO2021056210A1 (zh) * 2019-09-24 2021-04-01 北京大学 视频编解码方法、装置和计算机可读存储介质
CN113259669B (zh) * 2021-03-25 2023-07-07 浙江大华技术股份有限公司 编码方法、装置、电子设备及计算机可读存储介质
CN113726406B (zh) * 2021-08-25 2022-06-21 中国电子科技集团公司第五十四研究所 一种基于分组编码的频点可变的多速率Ku通信发射装置
KR20240155249A (ko) * 2022-02-13 2024-10-28 엘지전자 주식회사 영상 인코딩/디코딩 방법 및 장치, 그리고 비트스트림을 저장한 기록 매체
WO2023168358A2 (en) * 2022-03-04 2023-09-07 Innopeak Technology, Inc. Integerization for interpolation filter design in video coding
US20250254297A1 (en) * 2022-04-12 2025-08-07 Telefonaktiebolaget Lm Ericsson (Publ) Enhanced interpolation filtering
CN116962706B (zh) * 2022-04-15 2025-12-12 华为技术有限公司 图像解码方法、编码方法及装置
WO2023205409A1 (en) * 2022-04-21 2023-10-26 Innopeak Technology, Inc. Reference picture resampling for video coding
CN119631400A (zh) * 2022-06-18 2025-03-14 抖音视界有限公司 用于视频处理的方法、装置和介质
WO2024080905A1 (en) * 2022-10-13 2024-04-18 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for enhanced interpolation filtering
JP2026514712A (ja) * 2023-04-13 2026-05-13 エルジー エレクトロニクス インコーポレイティド 画像エンコーディング/デコーディング方法及び装置、並びにビットストリームを保存した記録媒体
US20250267274A1 (en) * 2024-02-20 2025-08-21 Tencent America LLC Uni-directional optical flow

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3861698B2 (ja) 2002-01-23 2006-12-20 ソニー株式会社 画像情報符号化装置及び方法、画像情報復号装置及び方法、並びにプログラム
CA2491679A1 (en) * 2002-07-09 2004-01-15 Nokia Corporation Method and system for selecting interpolation filter type in video coding
JP5342777B2 (ja) * 2004-09-29 2013-11-13 トムソン リサーチ ファンディング コーポレイション Rru映像符号化及び復号化方法及び装置
US9014280B2 (en) * 2006-10-13 2015-04-21 Qualcomm Incorporated Video coding with adaptive filtering for motion compensated prediction
EP2048886A1 (en) * 2007-10-11 2009-04-15 Panasonic Corporation Coding of adaptive interpolation filter coefficients
US8831086B2 (en) * 2008-04-10 2014-09-09 Qualcomm Incorporated Prediction techniques for interpolation in video coding
US9967590B2 (en) * 2008-04-10 2018-05-08 Qualcomm Incorporated Rate-distortion defined interpolation for video coding based on fixed filter or adaptive filter
US20090257499A1 (en) * 2008-04-10 2009-10-15 Qualcomm Incorporated Advanced interpolation techniques for motion compensation in video coding
US9078007B2 (en) * 2008-10-03 2015-07-07 Qualcomm Incorporated Digital video coding with interpolation filters and offsets
KR101538704B1 (ko) * 2009-01-28 2015-07-28 삼성전자주식회사 보간 필터를 적응적으로 사용하여 영상을 부호화 및 복호화하는 방법 및 장치
CN102037732B (zh) * 2009-07-06 2013-03-27 联发科技(新加坡)私人有限公司 一种执行单循环自适应内插滤波的方法、编码器和译码器
KR101457418B1 (ko) * 2009-10-23 2014-11-04 삼성전자주식회사 계층적 부호화 단위의 크기에 따른 비디오 부호화 방법과 그 장치, 및 비디오 복호화 방법과 그 장치
JP2011135184A (ja) * 2009-12-22 2011-07-07 Sony Corp 画像処理装置および方法、並びにプログラム
JP5439162B2 (ja) * 2009-12-25 2014-03-12 株式会社Kddi研究所 動画像符号化装置および動画像復号装置
US20110200108A1 (en) * 2010-02-18 2011-08-18 Qualcomm Incorporated Chrominance high precision motion filtering for motion interpolation
KR101682147B1 (ko) * 2010-04-05 2016-12-05 삼성전자주식회사 변환 및 역변환에 기초한 보간 방법 및 장치
US20110243222A1 (en) * 2010-04-05 2011-10-06 Samsung Electronics Co., Ltd. Method and apparatus for encoding video by using adaptive prediction filtering, method and apparatus for decoding video by using adaptive prediction filtering
KR101750046B1 (ko) * 2010-04-05 2017-06-22 삼성전자주식회사 트리 구조에 따른 부호화 단위에 기반한 인루프 필터링을 수반하는 비디오 부호화 방법과 그 장치 및 복호화 방법과 그 장치
US9154807B2 (en) * 2010-06-25 2015-10-06 Qualcomm Incorporated Inclusion of switched interpolation filter coefficients in a compressed bit-stream
US10045046B2 (en) * 2010-12-10 2018-08-07 Qualcomm Incorporated Adaptive support for interpolating values of sub-pixels for video coding
KR20120090740A (ko) * 2011-02-07 2012-08-17 (주)휴맥스 정밀한 단위의 필터 선택을 적용한 영상 부호화/복호화 장치 및 방법
JP5670226B2 (ja) * 2011-03-04 2015-02-18 Kddi株式会社 動画像符号化装置、動画像符号化方法、およびプログラム
US9313519B2 (en) * 2011-03-11 2016-04-12 Google Technology Holdings LLC Interpolation filter selection using prediction unit (PU) size
JP5649523B2 (ja) * 2011-06-27 2015-01-07 日本電信電話株式会社 映像符号化方法,装置,映像復号方法,装置およびそれらのプログラム
KR20130050149A (ko) * 2011-11-07 2013-05-15 오수미 인터 모드에서의 예측 블록 생성 방법
US20130177084A1 (en) * 2012-01-10 2013-07-11 Qualcomm Incorporated Motion vector scaling in video coding
GB2501535A (en) * 2012-04-26 2013-10-30 Sony Corp Chrominance Processing in High Efficiency Video Codecs
US9420280B2 (en) * 2012-06-08 2016-08-16 Qualcomm Incorporated Adaptive upsampling filters
MX345571B (es) * 2012-07-09 2017-02-03 Vid Scale Inc Decodificacion y emision en tiempo real de video sensibles a la energia.
KR102073930B1 (ko) * 2014-03-14 2020-02-06 브이아이디 스케일, 인크. Rgb 비디오 코딩 향상을 위한 시스템 및 방법
KR20170078681A (ko) * 2014-11-04 2017-07-07 삼성전자주식회사 영상 특성을 반영한 보간 필터를 이용하는 비디오 부호화 방법 및 장치, 비디오 복호화 방법 및 장치
US11463689B2 (en) * 2015-06-18 2022-10-04 Qualcomm Incorporated Intra prediction and intra mode coding

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JP2023100713A (ja) 2023-07-19
CN116347075A (zh) 2023-06-27
KR102546383B1 (ko) 2023-06-22
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US20180098066A1 (en) 2018-04-05
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