CA2895856C - Appareil de codage et de decodage video et procede employant la quantification en sous-blocs - Google Patents
Appareil de codage et de decodage video et procede employant la quantification en sous-blocs Download PDFInfo
- Publication number
- CA2895856C CA2895856C CA2895856A CA2895856A CA2895856C CA 2895856 C CA2895856 C CA 2895856C CA 2895856 A CA2895856 A CA 2895856A CA 2895856 A CA2895856 A CA 2895856A CA 2895856 C CA2895856 C CA 2895856C
- Authority
- CA
- Canada
- Prior art keywords
- blocks
- sub
- quantization
- block
- orthogonal transform
- 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.)
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Links
- 238000013139 quantization Methods 0.000 title claims abstract description 156
- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000002123 temporal effect Effects 0.000 claims description 6
- 230000001131 transforming effect Effects 0.000 claims description 3
- 239000013598 vector Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 20
- 238000011156 evaluation Methods 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 9
- 208000037170 Delayed Emergence from Anesthesia Diseases 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000000872 buffer Substances 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000023320 Luma <angiosperm> Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
- H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
-
- 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
- H04N19/124—Quantisation
-
- 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
- H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence 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
- H04N19/10—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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Pour permettre un meilleur contrôle de la quantification selon la propriété dune image dans un macrobloc, les valeurs de paramètres de quantification peuvent être changées en unités de sous-blocs égales ou plus petites que le macrobloc dune manière similaire aux processus de compensation de mouvement et de transformation orthogonale. Un contrôle de raffinement de la quantification est exécuté, par exemple, en sélectionnant des paramètres de quantification fins et grossiers respectivement qui correspondent à des sous-blocs si une pluralité dimages ayant différentes propriétés coexiste dans le macrobloc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2895856A CA2895856C (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2895856A CA2895856C (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
| CA2681025A CA2681025C (fr) | 2007-03-20 | 2007-03-20 | Appareil et methode de codage et de decodage d'images utilisant la quantification de sous-blocs |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2681025A Division CA2681025C (fr) | 2007-03-20 | 2007-03-20 | Appareil et methode de codage et de decodage d'images utilisant la quantification de sous-blocs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2895856A1 CA2895856A1 (fr) | 2008-10-23 |
| CA2895856C true CA2895856C (fr) | 2018-09-11 |
Family
ID=53546342
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2895854A Abandoned CA2895854A1 (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
| CA2895857A Abandoned CA2895857A1 (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et methode employant la quantification en sous-blocs |
| CA2895855A Active CA2895855C (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
| CA2895856A Active CA2895856C (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2895854A Abandoned CA2895854A1 (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
| CA2895857A Abandoned CA2895857A1 (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et methode employant la quantification en sous-blocs |
| CA2895855A Active CA2895855C (fr) | 2007-03-20 | 2007-03-20 | Appareil de codage et de decodage video et procede employant la quantification en sous-blocs |
Country Status (1)
| Country | Link |
|---|---|
| CA (4) | CA2895854A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270637B (zh) * | 2009-05-29 | 2018-07-27 | 三菱电机株式会社 | 图像解码装置以及图像解码方法 |
| HUE051391T2 (hu) * | 2010-04-13 | 2021-03-01 | Ge Video Compression Llc | Szignifikancia térképek és transzformációs együttható blokkok kódolása |
-
2007
- 2007-03-20 CA CA2895854A patent/CA2895854A1/fr not_active Abandoned
- 2007-03-20 CA CA2895857A patent/CA2895857A1/fr not_active Abandoned
- 2007-03-20 CA CA2895855A patent/CA2895855C/fr active Active
- 2007-03-20 CA CA2895856A patent/CA2895856C/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2895855C (fr) | 2018-09-11 |
| CA2895854A1 (fr) | 2008-10-23 |
| CA2895857A1 (fr) | 2008-10-23 |
| CA2895856A1 (fr) | 2008-10-23 |
| CA2895855A1 (fr) | 2008-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20150626 |