FR2921160B1 - Procede de traitement de signaux hypercomplexes - Google Patents

Procede de traitement de signaux hypercomplexes

Info

Publication number
FR2921160B1
FR2921160B1 FR0757654A FR0757654A FR2921160B1 FR 2921160 B1 FR2921160 B1 FR 2921160B1 FR 0757654 A FR0757654 A FR 0757654A FR 0757654 A FR0757654 A FR 0757654A FR 2921160 B1 FR2921160 B1 FR 2921160B1
Authority
FR
France
Prior art keywords
hypercomplex
signals
processing
processing hypercomplex
hypercomplex signals
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
Application number
FR0757654A
Other languages
English (en)
Other versions
FR2921160A1 (fr
Inventor
Denis Grenier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Priority to FR0757654A priority Critical patent/FR2921160B1/fr
Priority to JP2010524529A priority patent/JP2010538718A/ja
Priority to CA2699749A priority patent/CA2699749C/fr
Priority to EP08804415A priority patent/EP2191288A1/fr
Priority to PCT/EP2008/062480 priority patent/WO2009037326A1/fr
Priority to US12/678,254 priority patent/US8558544B2/en
Publication of FR2921160A1 publication Critical patent/FR2921160A1/fr
Application granted granted Critical
Publication of FR2921160B1 publication Critical patent/FR2921160B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/5608—Data processing and visualization specially adapted for MR, e.g. for feature analysis and pattern recognition on the basis of measured MR data, segmentation of measured MR data, edge contour detection on the basis of measured MR data, for enhancing measured MR data in terms of signal-to-noise ratio by means of noise filtering or apodization, for enhancing measured MR data in terms of resolution by means for deblurring, windowing, zero filling, or generation of gray-scaled images, colour-coded images or images displaying vectors instead of pixels

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FR0757654A 2007-09-18 2007-09-18 Procede de traitement de signaux hypercomplexes Expired - Fee Related FR2921160B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR0757654A FR2921160B1 (fr) 2007-09-18 2007-09-18 Procede de traitement de signaux hypercomplexes
JP2010524529A JP2010538718A (ja) 2007-09-18 2008-09-18 超複素数を使用したｍｒｉ空間符号化
CA2699749A CA2699749C (fr) 2007-09-18 2008-09-18 Encodage spatial en irm au moyen de nombres hypercomplexes
EP08804415A EP2191288A1 (fr) 2007-09-18 2008-09-18 Encodage spatial en irm au moyen de nombres hypercomplexes
PCT/EP2008/062480 WO2009037326A1 (fr) 2007-09-18 2008-09-18 Encodage spatial en irm au moyen de nombres hypercomplexes
US12/678,254 US8558544B2 (en) 2007-09-18 2008-09-18 MRI spatial encoding using hypercomplex numbers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0757654A FR2921160B1 (fr) 2007-09-18 2007-09-18 Procede de traitement de signaux hypercomplexes

Publications (2)

Publication Number Publication Date
FR2921160A1 FR2921160A1 (fr) 2009-03-20
FR2921160B1 true FR2921160B1 (fr) 2009-11-20

Family

ID=39311077

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0757654A Expired - Fee Related FR2921160B1 (fr) 2007-09-18 2007-09-18 Procede de traitement de signaux hypercomplexes

Country Status (6)

Country Link
US (1) US8558544B2 (fr)
EP (1) EP2191288A1 (fr)
JP (1) JP2010538718A (fr)
CA (1) CA2699749C (fr)
FR (1) FR2921160B1 (fr)
WO (1) WO2009037326A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9557397B2 (en) * 2013-11-04 2017-01-31 Aspect Imaging Ltd. Method for manipulating the MRI's protocol of pulse-sequences
CN104200421B (zh) * 2014-08-01 2017-07-28 南京信息工程大学 基于四元数正交变换的彩色图像加密方法及解密方法
CN108122233B (zh) * 2017-12-18 2021-11-19 辽宁师范大学 基于局部像素综合特征的彩色图像分割方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307343A (en) * 1979-08-20 1981-12-22 General Electric Company Moving gradient zeugmatography
US5998996A (en) * 1997-03-27 1999-12-07 General Electric Company Correction of artifacts caused by Maxwell terms in phase contrast angiography
US20040217760A1 (en) * 2000-02-11 2004-11-04 Madarasz Frank L. Bayesian methods for flow parameter estimates in magnetic resonance imaging
CA2530298A1 (fr) * 2003-06-30 2005-01-20 Board Of Regents, The University Of Texas System Procedes et appareil d'imagerie par resonance magnetique a deplacement chimique rapide
EP1729143B1 (fr) * 2005-06-04 2010-05-19 Bruker BioSpin AG Spectroscopie automatique par projections
US8200025B2 (en) * 2007-12-07 2012-06-12 University Of Ottawa Image classification and search

Also Published As

Publication number Publication date
FR2921160A1 (fr) 2009-03-20
WO2009037326A1 (fr) 2009-03-26
CA2699749C (fr) 2017-05-23
EP2191288A1 (fr) 2010-06-02
US8558544B2 (en) 2013-10-15
CA2699749A1 (fr) 2009-03-26
US20100213936A1 (en) 2010-08-26
JP2010538718A (ja) 2010-12-16

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Effective date: 20200910