EP2005756A2 - Eingeschränkte vektorquantisierung - Google Patents
Eingeschränkte vektorquantisierungInfo
- Publication number
- EP2005756A2 EP2005756A2 EP07731724A EP07731724A EP2005756A2 EP 2005756 A2 EP2005756 A2 EP 2005756A2 EP 07731724 A EP07731724 A EP 07731724A EP 07731724 A EP07731724 A EP 07731724A EP 2005756 A2 EP2005756 A2 EP 2005756A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vectors
- dictionary
- signal
- vector
- code vectors
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3082—Vector coding
-
- 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
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/94—Vector quantisation
Definitions
- the present invention relates to quantization dictionaries for coding and decoding signals such as audio, video signals, and more generally multimedia signals, for storage or transmission.
- the quantizer "Fine-coarse” suffers from the same disadvantages as those indicated above for the statistical vector quantization. Indeed, the link between the fine-resolution quantizer and the quantizer Coarse resolution is a simple look-up table and therefore, even if the high-resolution vector quantizer is a finite subset of a regular network with a minimal distance between code vectors, this constraint is not imposed on the vector quantizer with coarse resolution that is constructed by conventional techniques of statistical vector quantization.
- the statistical analysis step further comprises a sub-step of calculating the distortion of the initial dictionary and a substep of comparing this distortion with a tolerance threshold, said statistical analysis step being repeated if said comparison is negative.
- the method then comprises a substep 14 for initializing common variables and in particular for initializing an ITER variable corresponding to an iteration number and a DITER variable corresponding to a value of distortion.
- Step 10 then comprises a substep 16 of classification of the training vectors with respect to the initial dictionary CO to form classification regions and a sub-step 18 of determining a centroid for each region. More precisely, during the sub-step 16 of classification, for each training vector, the whole of the current dictionary, that is to say of the CO dictionary modified by successive iterations, is scanned, and one chooses the dictionary code vector minimizing quadratic error with drive vector. Sub-step 18 is performed as follows: for each class or region Vi, the new centroids are calculated.
- step 30 delivers a new dictionary C obtained by rounding the CITER dictionary obtained in step 10, on the regular network.
- the optimization phase comprises a step 50 of measuring the distortion and a test 52 to determine if the distortion is less than a tolerance threshold or if a maximum number of iterations has been reached. Such an optimization phase makes it possible to further improve the quality of the dictionary.
- This module 1 12 is supplied to a temporal shaping module 114.
- This module 1 14 also receives a synthetic excitation signal generated by a module 116 from the CELP excitation parameters supplied by the decoder CELP 104
- the unit 1 10 finally comprises a frequency shaping module
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0602452 | 2006-03-21 | ||
PCT/FR2007/050908 WO2007107659A2 (fr) | 2006-03-21 | 2007-03-09 | Quantification vectorielle contrainte |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2005756A2 true EP2005756A2 (de) | 2008-12-24 |
Family
ID=36763212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07731724A Withdrawn EP2005756A2 (de) | 2006-03-21 | 2007-03-09 | Eingeschränkte vektorquantisierung |
Country Status (6)
Country | Link |
---|---|
US (1) | US8285544B2 (de) |
EP (1) | EP2005756A2 (de) |
JP (1) | JP4981122B2 (de) |
KR (1) | KR101370018B1 (de) |
CN (1) | CN101467459B (de) |
WO (1) | WO2007107659A2 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4871246B2 (ja) * | 2007-10-30 | 2012-02-08 | 日本電信電話株式会社 | ベクトル量子化方法,装置およびそれらのプログラムとそれを記録したコンピュータ読み取り可能な記録媒体 |
TWI376960B (en) * | 2009-07-31 | 2012-11-11 | Univ Nat Pingtung Sci & Tech | Codebook generating method for image compression |
CN102307372B (zh) * | 2011-08-26 | 2014-12-17 | 电信科学技术研究院 | 一种基于Lloyd-Max量化器的数据压缩方法和设备 |
CN104221287B (zh) * | 2012-03-29 | 2017-05-31 | 瑞典爱立信有限公司 | 矢量量化器 |
US11347941B2 (en) * | 2019-04-30 | 2022-05-31 | Marvell Asia Pte, Ltd. | Methods and apparatus for compressing data streams |
CN113779103B (zh) * | 2021-03-02 | 2024-04-09 | 北京沃东天骏信息技术有限公司 | 用于检测异常数据的方法和装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4817157A (en) * | 1988-01-07 | 1989-03-28 | Motorola, Inc. | Digital speech coder having improved vector excitation source |
US6393394B1 (en) * | 1999-07-19 | 2002-05-21 | Qualcomm Incorporated | Method and apparatus for interleaving line spectral information quantization methods in a speech coder |
JP3483513B2 (ja) * | 2000-03-02 | 2004-01-06 | 沖電気工業株式会社 | 音声録音再生装置 |
JP3983532B2 (ja) * | 2001-12-05 | 2007-09-26 | 日本放送協会 | 場面抽出装置 |
EP1709743A1 (de) * | 2004-01-30 | 2006-10-11 | France Telecom S.A. | Vektorquantifizierung mit variabler auflösung und variabler dimension |
-
2007
- 2007-03-09 US US12/225,312 patent/US8285544B2/en not_active Expired - Fee Related
- 2007-03-09 JP JP2009500891A patent/JP4981122B2/ja not_active Expired - Fee Related
- 2007-03-09 KR KR1020087025757A patent/KR101370018B1/ko not_active IP Right Cessation
- 2007-03-09 WO PCT/FR2007/050908 patent/WO2007107659A2/fr active Application Filing
- 2007-03-09 EP EP07731724A patent/EP2005756A2/de not_active Withdrawn
- 2007-03-09 CN CN2007800099157A patent/CN101467459B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
KR101370018B1 (ko) | 2014-03-06 |
US20100228808A1 (en) | 2010-09-09 |
KR20090005027A (ko) | 2009-01-12 |
CN101467459A (zh) | 2009-06-24 |
WO2007107659A2 (fr) | 2007-09-27 |
US8285544B2 (en) | 2012-10-09 |
JP2009530940A (ja) | 2009-08-27 |
JP4981122B2 (ja) | 2012-07-18 |
CN101467459B (zh) | 2011-08-31 |
WO2007107659A3 (fr) | 2008-12-18 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20080916 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
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R17D | Deferred search report published (corrected) |
Effective date: 20081218 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: H04N 7/26 20060101AFI20090128BHEP Ipc: H03M 7/30 20060101ALI20090128BHEP |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ORANGE |
|
17Q | First examination report despatched |
Effective date: 20170202 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170613 |