CN1197373C - 运动图象编码装置和方法 - Google Patents
运动图象编码装置和方法 Download PDFInfo
- Publication number
- CN1197373C CN1197373C CNB021418802A CN02141880A CN1197373C CN 1197373 C CN1197373 C CN 1197373C CN B021418802 A CNB021418802 A CN B021418802A CN 02141880 A CN02141880 A CN 02141880A CN 1197373 C CN1197373 C CN 1197373C
- Authority
- CN
- China
- Prior art keywords
- quantization step
- maximum
- maximum quantization
- average
- step size
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 238000013139 quantization Methods 0.000 claims abstract description 165
- 230000008859 change Effects 0.000 claims abstract description 25
- 238000003079 width control Methods 0.000 claims abstract description 17
- 230000003292 diminished effect Effects 0.000 claims 2
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009466 transformation 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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/587—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
-
- 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
- H04N19/102—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
- H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
-
- 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
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
-
- 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
- H04N19/172—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 picture, frame or field
-
- 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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001257888A JP4492777B2 (ja) | 2001-08-28 | 2001-08-28 | 動画像符号化装置 |
| JP2001257888 | 2001-08-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1404310A CN1404310A (zh) | 2003-03-19 |
| CN1197373C true CN1197373C (zh) | 2005-04-13 |
Family
ID=19085491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021418802A Expired - Fee Related CN1197373C (zh) | 2001-08-28 | 2002-08-27 | 运动图象编码装置和方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7408985B2 (zh) |
| JP (1) | JP4492777B2 (zh) |
| CN (1) | CN1197373C (zh) |
| GB (1) | GB2380351A (zh) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1938618A2 (en) * | 2005-09-29 | 2008-07-02 | Thomson Research Funding Corporation | Method and apparatus for constrained variable bit rate (vbr) video encoding |
| JP2008236333A (ja) * | 2007-03-20 | 2008-10-02 | Toshiba Corp | 映像符号化装置及び映像符号化方法 |
| JP2011024066A (ja) * | 2009-07-17 | 2011-02-03 | Sony Corp | 画像処理装置および方法 |
| JP2012010263A (ja) * | 2010-06-28 | 2012-01-12 | Sony Corp | 符号化装置、撮像装置、符号化伝送システムおよび符号化方法 |
| US20170280139A1 (en) * | 2016-03-22 | 2017-09-28 | Qualcomm Incorporated | Apparatus and methods for adaptive calculation of quantization parameters in display stream compression |
| US12395632B2 (en) | 2022-09-13 | 2025-08-19 | Google Llc | Setting a maximum quantization parameter for encoding a video frame |
| US12278962B2 (en) | 2022-09-13 | 2025-04-15 | Google Llc | Dynamic quantization parameter for encoding a video frame |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111768A (ja) | 1986-10-30 | 1988-05-17 | Nec Corp | 画像デ−タ量子化装置 |
| US5038209A (en) * | 1990-09-27 | 1991-08-06 | At&T Bell Laboratories | Adaptive buffer/quantizer control for transform video coders |
| US5144424A (en) | 1991-10-15 | 1992-09-01 | Thomson Consumer Electronics, Inc. | Apparatus for video data quantization control |
| SE9103381L (sv) | 1991-11-15 | 1993-03-08 | Televerket | Foerfarande och apparat foer bildkodning med val av steghoejd i kvantiseraren |
| JPH07203456A (ja) * | 1993-12-28 | 1995-08-04 | Matsushita Electric Ind Co Ltd | 符号化装置と復号化装置と映像記録装置 |
| US5686963A (en) | 1995-12-26 | 1997-11-11 | C-Cube Microsystems | Method for performing rate control in a video encoder which provides a bit budget for each frame while employing virtual buffers and virtual buffer verifiers |
| US6337928B1 (en) * | 1996-08-26 | 2002-01-08 | Canon Kabushiki Kaisha | Image transmission apparatus and method therefor |
| EP0841820A3 (en) * | 1996-11-08 | 2005-11-09 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for encoding, multiplexing and transmitting a video signal |
| US6532262B1 (en) * | 1998-07-22 | 2003-03-11 | Matsushita Electric Industrial Co., Ltd. | Coding method and apparatus and recorder |
| JP2000152228A (ja) * | 1998-11-11 | 2000-05-30 | Sony Corp | 高能率符号化装置 |
| US6535251B1 (en) | 1999-10-26 | 2003-03-18 | Sharplabs Of America, Inc. | Video encoder and method for adjusting quantization step in real time |
| JP3871840B2 (ja) * | 1999-12-24 | 2007-01-24 | 日本電気株式会社 | 圧縮動画像再符号化装置 |
| US6834080B1 (en) * | 2000-09-05 | 2004-12-21 | Kabushiki Kaisha Toshiba | Video encoding method and video encoding apparatus |
| US6937770B1 (en) * | 2000-12-28 | 2005-08-30 | Emc Corporation | Adaptive bit rate control for rate reduction of MPEG coded video |
-
2001
- 2001-08-28 JP JP2001257888A patent/JP4492777B2/ja not_active Expired - Fee Related
-
2002
- 2002-08-27 CN CNB021418802A patent/CN1197373C/zh not_active Expired - Fee Related
- 2002-08-27 US US10/228,084 patent/US7408985B2/en not_active Expired - Fee Related
- 2002-08-28 GB GB0219985A patent/GB2380351A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN1404310A (zh) | 2003-03-19 |
| GB2380351A (en) | 2003-04-02 |
| GB0219985D0 (en) | 2002-10-09 |
| JP2003069997A (ja) | 2003-03-07 |
| US20030043904A1 (en) | 2003-03-06 |
| US7408985B2 (en) | 2008-08-05 |
| JP4492777B2 (ja) | 2010-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LENOVO INNOVATION CO., LTD. (HONGKONG) Free format text: FORMER OWNER: NEC CORP. Effective date: 20141128 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: HONG KONG, CHINA |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141128 Address after: Hongkong, China Patentee after: LENOVO INNOVATIONS Co.,Ltd.(HONG KONG) Address before: Tokyo, Japan Patentee before: NEC Corp. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050413 Termination date: 20170827 |