DE69711736T2 - Adaptive Postfilterung für ein Bildfernsprechsystem mit niedriger Bitrate - Google Patents
Adaptive Postfilterung für ein Bildfernsprechsystem mit niedriger BitrateInfo
- Publication number
- DE69711736T2 DE69711736T2 DE69711736T DE69711736T DE69711736T2 DE 69711736 T2 DE69711736 T2 DE 69711736T2 DE 69711736 T DE69711736 T DE 69711736T DE 69711736 T DE69711736 T DE 69711736T DE 69711736 T2 DE69711736 T2 DE 69711736T2
- Authority
- DE
- Germany
- Prior art keywords
- postfilter
- image
- video images
- bit rate
- low bit
- 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.)
- Expired - Lifetime
Links
- 230000003044 adaptive effect Effects 0.000 title abstract 2
- 238000001914 filtration Methods 0.000 title 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000013139 quantization Methods 0.000 abstract 1
Classifications
-
- G06T5/70—
-
- 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
- H04N19/527—Global motion vector estimation
-
- 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
-
- 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
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/590,722 US6324301B1 (en) | 1996-01-24 | 1996-01-24 | Adaptive postfilter for low bitrate visual telephony noise removal |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69711736D1 DE69711736D1 (de) | 2002-05-16 |
DE69711736T2 true DE69711736T2 (de) | 2002-10-10 |
Family
ID=24363428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69711736T Expired - Lifetime DE69711736T2 (de) | 1996-01-24 | 1997-01-14 | Adaptive Postfilterung für ein Bildfernsprechsystem mit niedriger Bitrate |
Country Status (4)
Country | Link |
---|---|
US (1) | US6324301B1 (de) |
EP (1) | EP0786904B1 (de) |
JP (1) | JP3316157B2 (de) |
DE (1) | DE69711736T2 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6636637B1 (en) * | 1997-01-31 | 2003-10-21 | Siemens Aktiengesellschaft | Method and arrangement for coding and decoding a digitized image |
FR2795589B1 (fr) * | 1999-06-11 | 2001-10-05 | Centre Nat Rech Scient | Decodeur video optimal base sur les standards de type mpeg |
KR100335055B1 (ko) * | 1999-12-08 | 2002-05-02 | 구자홍 | 압축 영상신호의 블럭현상 및 링현상 제거방법 |
US8625680B2 (en) * | 2003-09-07 | 2014-01-07 | Microsoft Corporation | Bitstream-controlled post-processing filtering |
CN100525444C (zh) * | 2004-07-06 | 2009-08-05 | 松下电器产业株式会社 | 图像编码方法以及图像解码方法 |
US8243820B2 (en) * | 2004-10-06 | 2012-08-14 | Microsoft Corporation | Decoding variable coded resolution video with native range/resolution post-processing operation |
US9071847B2 (en) * | 2004-10-06 | 2015-06-30 | Microsoft Technology Licensing, Llc | Variable coding resolution in video codec |
US7956930B2 (en) | 2006-01-06 | 2011-06-07 | Microsoft Corporation | Resampling and picture resizing operations for multi-resolution video coding and decoding |
EP1944974A1 (de) * | 2007-01-09 | 2008-07-16 | Matsushita Electric Industrial Co., Ltd. | Positionsabhängige Hinweise für Nachfilterung |
JP2007174690A (ja) * | 2007-01-26 | 2007-07-05 | Monolith Co Ltd | 画像符号化方法、画像復号方法、画像符号化装置および画像復号装置 |
US8107571B2 (en) * | 2007-03-20 | 2012-01-31 | Microsoft Corporation | Parameterized filters and signaling techniques |
EP2003896A1 (de) * | 2007-06-12 | 2008-12-17 | Panasonic Corporation | Statistische Bildverbesserung |
US8238675B2 (en) * | 2008-03-24 | 2012-08-07 | Microsoft Corporation | Spectral information recovery for compressed image restoration with nonlinear partial differential equation regularization |
JP5562408B2 (ja) | 2009-04-20 | 2014-07-30 | ドルビー ラボラトリーズ ライセンシング コーポレイション | 指揮された補間およびデータの後処理 |
US8654859B1 (en) * | 2009-12-17 | 2014-02-18 | Ambarella, Inc. | Low cost rate-distortion computations for video compression |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4941043A (en) | 1988-06-14 | 1990-07-10 | Siemens Aktiengesellschaft | Method for reducing blocking artifacts in video scene coding with discrete cosine transformation (DCT) at a low data rate |
FR2661063B1 (fr) | 1990-04-13 | 1992-06-19 | Thomson Csf | Procede et dispositif de post-filtrage pour codage d'images par transformation cosinus discrete. |
US5313298A (en) * | 1992-03-05 | 1994-05-17 | Rubin, Bednarek And Associates, Inc. | Video companding method and system |
US5649031A (en) * | 1992-03-31 | 1997-07-15 | Hitachi, Ltd. | Image information processor for producing high-quality output image |
FR2690299B1 (fr) | 1992-04-17 | 1994-06-17 | Telecommunications Sa | Procede et dispositif de filtrage spatial d'images numeriques decodees par transformation par bloc. |
KR0148130B1 (ko) | 1992-05-18 | 1998-09-15 | 강진구 | 블럭킹아티팩트를 억제시키는 부호화/복호화 방법 및 그 장치 |
US5596659A (en) * | 1992-09-01 | 1997-01-21 | Apple Computer, Inc. | Preprocessing and postprocessing for vector quantization |
EP0679031B1 (de) | 1993-11-08 | 2001-08-22 | Sony Corporation | Bildsignalkodierung und -dekodierung |
US5512956A (en) * | 1994-02-04 | 1996-04-30 | At&T Corp. | Adaptive spatial-temporal postprocessing for low bit-rate coded image sequences |
JP2673778B2 (ja) | 1994-02-22 | 1997-11-05 | 国際電信電話株式会社 | 動画像の復号化における雑音低減装置 |
BR9505863A (pt) * | 1994-04-01 | 1996-02-21 | Sony Corp | Processos para codificar um sinal de entrada para transmitir um sinal codificado e para decodificar uma cadeia de códigos composta de sinais codificados aparelhos para codificar um sinal de entrada e para decodificar uma cadeia de códigos composta de sinais codificados e meio de gravaçao de informações |
-
1996
- 1996-01-24 US US08/590,722 patent/US6324301B1/en not_active Expired - Lifetime
-
1997
- 1997-01-14 EP EP97300186A patent/EP0786904B1/de not_active Expired - Lifetime
- 1997-01-14 DE DE69711736T patent/DE69711736T2/de not_active Expired - Lifetime
- 1997-01-22 JP JP00912597A patent/JP3316157B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6324301B1 (en) | 2001-11-27 |
EP0786904A3 (de) | 2000-05-17 |
JP3316157B2 (ja) | 2002-08-19 |
JPH09215009A (ja) | 1997-08-15 |
EP0786904A2 (de) | 1997-07-30 |
DE69711736D1 (de) | 2002-05-16 |
EP0786904B1 (de) | 2002-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |