CA2166623C - Codage de donnees d'imagerie - Google Patents
Codage de donnees d'imagerie Download PDFInfo
- Publication number
- CA2166623C CA2166623C CA002166623A CA2166623A CA2166623C CA 2166623 C CA2166623 C CA 2166623C CA 002166623 A CA002166623 A CA 002166623A CA 2166623 A CA2166623 A CA 2166623A CA 2166623 C CA2166623 C CA 2166623C
- Authority
- CA
- Canada
- Prior art keywords
- frame
- frames
- coded
- buffer
- block
- 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 - Fee Related
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 204
- 239000013598 vector Substances 0.000 claims abstract description 189
- 238000000034 method Methods 0.000 claims abstract description 68
- 230000005540 biological transmission Effects 0.000 abstract description 16
- 238000009499 grossing Methods 0.000 abstract 1
- 230000001788 irregular Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 description 30
- 230000006835 compression Effects 0.000 description 30
- 238000004364 calculation method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 20
- 230000002457 bidirectional effect Effects 0.000 description 15
- 230000002123 temporal effect Effects 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 12
- 230000006837 decompression Effects 0.000 description 10
- 230000004044 response Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 230000008707 rearrangement Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 241001527902 Aratus Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000013144 data compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/43—Hardware specially adapted for motion estimation or compensation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/004—Predictors, e.g. intraframe, interframe coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Système de codage d'images vidéo selon la norme MPEG en temps réel. Des vecteurs de mouvement sont calculés pendant la prédiction progressive d'images B (bidirectionnelles) et d'images P (prédites) à l'aide d'une procédure de télescopage. De même, une procédure de télescopage est utilisée pour le calcul de vecteurs de mouvement pour les images B pendant le codage prédictif régressif. A cause du télescopage utilisé pour le codage prédictif régressif, le codage des images B se fait dans un ordre inversé. L'ordre correct des images B est rétabli par l'inscription des images dans un tampon (97) dans l'ordre dans lequel elles sont produites, puis la lecture des données d'image dans le tampon dans l'ordre dans lequel elles doivent être transmises ou enregistrées. L'utilisation de la procédure de télescopage réduit considérablement l'importance du calcul nécessaire pour déterminer les vecteurs de mouvement pendant le codage prédictif pour des images déplacées de plus d'une période d'image. L'utilisation d'un tampon pour réorganiser les images n'ajoute pas sensiblement aux besoins généraux en matériel, car on utilise déjà souvent un tampon pour lisser les débits de données irréguliers.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9315859.0 | 1993-07-30 | ||
| GB939315859A GB9315859D0 (en) | 1993-07-30 | 1993-07-30 | Coding image data |
| EP93310008 | 1993-12-10 | ||
| EP93310008.3 | 1993-12-10 | ||
| PCT/GB1994/001651 WO1995004432A1 (fr) | 1993-07-30 | 1994-07-29 | Codage de donnees d'image |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2166623A1 CA2166623A1 (fr) | 1995-02-09 |
| CA2166623C true CA2166623C (fr) | 2000-10-31 |
Family
ID=26134599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002166623A Expired - Fee Related CA2166623C (fr) | 1993-07-30 | 1994-07-29 | Codage de donnees d'imagerie |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPH09501024A (fr) |
| KR (1) | KR960704441A (fr) |
| CN (1) | CN1128098A (fr) |
| CA (1) | CA2166623C (fr) |
| DE (1) | DE69427354T2 (fr) |
| NZ (1) | NZ269177A (fr) |
| SG (1) | SG50538A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656882B (zh) * | 2001-11-06 | 2013-04-17 | 松下电器产业株式会社 | 运动图像编码方法及运动图像解码方法 |
| KR100491530B1 (ko) * | 2002-05-03 | 2005-05-27 | 엘지전자 주식회사 | 모션 벡터 결정 방법 |
| US7522667B2 (en) * | 2005-02-24 | 2009-04-21 | Freescale Semiconductor, Inc. | Method and apparatus for dynamic determination of frames required to build a complete picture in an MPEG video stream |
| WO2020140244A1 (fr) * | 2019-01-03 | 2020-07-09 | 北京大学 | Procédé et dispositif de traitement d'image vidéo, et support d'informations |
-
1994
- 1994-07-29 JP JP7505670A patent/JPH09501024A/ja active Pending
- 1994-07-29 CA CA002166623A patent/CA2166623C/fr not_active Expired - Fee Related
- 1994-07-29 CN CN94192948A patent/CN1128098A/zh active Pending
- 1994-07-29 KR KR1019960700353A patent/KR960704441A/ko not_active Application Discontinuation
- 1994-07-29 SG SG1996004331A patent/SG50538A1/en unknown
- 1994-07-29 NZ NZ269177A patent/NZ269177A/en unknown
- 1994-07-29 DE DE69427354T patent/DE69427354T2/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69427354D1 (de) | 2001-07-05 |
| NZ269177A (en) | 1996-09-25 |
| AU696445B2 (en) | 1998-09-10 |
| CA2166623A1 (fr) | 1995-02-09 |
| JPH09501024A (ja) | 1997-01-28 |
| SG50538A1 (en) | 1998-07-20 |
| KR960704441A (ko) | 1996-08-31 |
| DE69427354T2 (de) | 2002-03-14 |
| CN1128098A (zh) | 1996-07-31 |
| AU7267294A (en) | 1995-02-28 |
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| CA2166623C (fr) | Codage de donnees d'imagerie | |
| WO1995004433A1 (fr) | Traitement de donnnes d'image | |
| EP0711489B1 (fr) | Codage de donnees d'image | |
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| JPH05227527A (ja) | インターレース画像符号化方法と装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |