NL193182C - Inrichting voor het maken van een angiografie voorzien van middelen voor het verschaffen van een homogene achtergrond. - Google Patents

Inrichting voor het maken van een angiografie voorzien van middelen voor het verschaffen van een homogene achtergrond. Download PDF

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Publication number
NL193182C
NL193182C NL8403468A NL8403468A NL193182C NL 193182 C NL193182 C NL 193182C NL 8403468 A NL8403468 A NL 8403468A NL 8403468 A NL8403468 A NL 8403468A NL 193182 C NL193182 C NL 193182C
Authority
NL
Netherlands
Prior art keywords
contrast
image
mtf
function
ideal
Prior art date
Application number
NL8403468A
Other languages
English (en)
Dutch (nl)
Other versions
NL8403468A (nl
NL193182B (nl
Original Assignee
Elscint Ltd
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 Elscint Ltd filed Critical Elscint Ltd
Publication of NL8403468A publication Critical patent/NL8403468A/nl
Publication of NL193182B publication Critical patent/NL193182B/xx
Application granted granted Critical
Publication of NL193182C publication Critical patent/NL193182C/nl

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/32—Transforming X-rays
    • H04N5/321—Transforming X-rays with video transmission of fluoroscopic images
    • H04N5/325—Image enhancement, e.g. by subtraction techniques using polyenergetic X-rays
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/60—Circuit arrangements for obtaining a series of X-ray photographs or for X-ray cinematography
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10116—X-ray image
    • G06T2207/10121—Fluoroscopy
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G06T2207/30101—Blood vessel; Artery; Vein; Vascular

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Controls And Circuits For Display Device (AREA)
NL8403468A 1983-11-13 1984-11-13 Inrichting voor het maken van een angiografie voorzien van middelen voor het verschaffen van een homogene achtergrond. NL193182C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL7021483 1983-11-13
IL70214A IL70214A (en) 1983-11-13 1983-11-13 Image contrast enhancement arrangement

Publications (3)

Publication Number Publication Date
NL8403468A NL8403468A (nl) 1985-06-03
NL193182B NL193182B (nl) 1998-10-01
NL193182C true NL193182C (nl) 1999-02-02

Family

ID=11054673

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8403468A NL193182C (nl) 1983-11-13 1984-11-13 Inrichting voor het maken van een angiografie voorzien van middelen voor het verschaffen van een homogene achtergrond.

Country Status (6)

Country Link
US (1) US4907288A (de)
JP (1) JP2575612B2 (de)
DE (1) DE3441162C2 (de)
FR (1) FR2555003B1 (de)
IL (1) IL70214A (de)
NL (1) NL193182C (de)

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FR2595153B1 (fr) * 1986-02-28 1990-12-07 Thomson Cgr Systeme d'imagerie numerique a reglage de l'echelle des gris, notamment pour la visualisation des vaisseaux sanguins
JPH01248187A (ja) * 1988-03-30 1989-10-03 Toshiba Corp ディスプレイシステム
GB8813514D0 (en) * 1988-06-08 1988-07-13 Quantel Ltd Image enhancement
FR2633746A1 (fr) * 1988-07-01 1990-01-05 Labo Electronique Physique Methode numerique de modification d'image et systeme de mise en oeuvre
NL8900217A (nl) * 1989-01-30 1990-08-16 Philips Nv Werkwijze voor het bepalen van een modulatie overdrachtfunctie van een digitaal beeldvormend systeem.
FR2648302A1 (fr) * 1989-06-09 1990-12-14 Peugeot Procede de traitement d'un signal composite video d'une scene a examiner
US5315507A (en) * 1989-09-22 1994-05-24 Fuji Photo Film Co., Ltd. Energy subtraction processing method and apparatus, superposition processing method and apparatus, and radiation image read-out apparatus
CA2028092C (en) * 1989-10-23 1996-08-06 Yuji Tanaka Binary image processing apparatus
NL9001265A (nl) * 1990-06-05 1992-01-02 Philips Nv Werkwijze voor bepaling van een modulatie-overdrachtfunctie van een digitaal beeldvormend systeem.
US5125046A (en) * 1990-07-26 1992-06-23 Ronald Siwoff Digitally enhanced imager for the visually impaired
US5359675A (en) * 1990-07-26 1994-10-25 Ronald Siwoff Video spectacles
FR2666426B1 (fr) * 1990-08-31 1994-08-19 Gen Electric Cgr Procede de correction des mesures de densite optique effectuees sur un film radiographique.
FR2670979A1 (fr) * 1990-12-21 1992-06-26 Philips Electronique Lab Procede de segmentation binaire locale d'images numerisees, par seuillage d'histogramme.
US5271064A (en) * 1991-06-14 1993-12-14 University Of Cincinnati Apparatus and method for smoothing regions and enhancing edges in gray scale images
US6466689B1 (en) * 1991-11-22 2002-10-15 Arch Development Corp. Method and system for digital radiography
US5297550A (en) * 1992-08-06 1994-03-29 Picker International, Inc. Background darkening of magnetic resonance angiographic images
US5297551A (en) * 1992-08-06 1994-03-29 Picker International, Inc. Weighted ray projection imaging for MR angiography
GB9420654D0 (en) * 1994-10-13 1994-11-30 Kodak Ltd A method for improving the contrast in photographic film materials
DE69623884T2 (de) * 1995-07-25 2003-05-28 Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi Bildverarbeitungsvorrichtung
JPH09261490A (ja) * 1996-03-22 1997-10-03 Minolta Co Ltd 画像形成装置
US6864888B1 (en) * 1999-02-25 2005-03-08 Lockheed Martin Corporation Variable acuity rendering for a graphic image processing system
GB9904692D0 (en) * 1999-03-01 1999-04-21 Isis Innovation X-ray image processing
GB0028491D0 (en) * 2000-11-22 2001-01-10 Isis Innovation Detection of features in images
JP2002271611A (ja) * 2001-03-14 2002-09-20 Fujitsu Ltd 画像処理装置
US20030160800A1 (en) 2002-02-22 2003-08-28 Agfa-Gevaert Multiscale gradation processing method
TWI237497B (en) * 2004-05-07 2005-08-01 Quanta Comp Inc High speed and high accuracy image adjust apparatus and method
US20060056722A1 (en) * 2004-09-14 2006-03-16 Nathan Moroney Edge preserving method and apparatus for image processing
DE102004049227B4 (de) * 2004-10-08 2007-03-01 Yxlon International Security Gmbh Verfahren zur Bestimmung der Lageänderung eines Objekts in einem Gepäckstück
JP2009211313A (ja) * 2008-03-03 2009-09-17 Fujitsu Ltd 画像処理装置、画像処理方法および画像処理プログラム

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US4193089A (en) * 1976-03-05 1980-03-11 Picker Corporation Television radiation imaging system and method
JPS5914790B2 (ja) * 1976-08-16 1984-04-06 富士電機株式会社 光学的識別装置
US4156914A (en) * 1977-08-18 1979-05-29 Baird Corporation Computer image display system and processor therefor
US4315318A (en) * 1978-12-26 1982-02-09 Fuji Photo Film Co., Ltd. Method and apparatus for processing a radiation image
FR2445536B1 (fr) * 1978-12-26 1989-12-22 Fuji Photo Film Co Ltd Procede et appareil pour traiter une image radiographique
JPS5691735A (en) * 1979-12-25 1981-07-24 Fuji Photo Film Co Ltd Method and apparatus for treating xxray image
SE426281B (sv) * 1981-05-05 1982-12-20 Ericsson Telefon Ab L M Forfarande for visning pa en bildskerm av utsignaler fran en stralningskenslig detektor
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JPS5834677A (ja) * 1981-08-25 1983-03-01 Matsushita Graphic Commun Syst Inc 画情報読取装置のｍｔｆ補正方式
US4517607A (en) * 1981-11-09 1985-05-14 Ricoh Company, Ltd. Method of and apparatus for compensating image in image reproduction system
US4438495A (en) * 1981-11-13 1984-03-20 General Electric Company Tomography window-level gamma functions
US4456926A (en) * 1982-06-21 1984-06-26 Thomson-Csf Broadcast, Inc. Enhancement of fluroscopically generated images
JPS5928144A (ja) * 1982-08-09 1984-02-14 Fuji Photo Film Co Ltd 放射線画像再生装置
US4559557A (en) * 1984-06-01 1985-12-17 General Electric Company Region-of-interest digital subtraction angiography

Also Published As

Publication number Publication date
FR2555003B1 (fr) 1991-11-29
NL8403468A (nl) 1985-06-03
FR2555003A1 (fr) 1985-05-17
DE3441162A1 (de) 1985-07-25
IL70214A (en) 1987-10-20
JPS60169980A (ja) 1985-09-03
DE3441162C2 (de) 1994-01-13
US4907288A (en) 1990-03-06
NL193182B (nl) 1998-10-01
JP2575612B2 (ja) 1997-01-29
IL70214A0 (en) 1984-02-29

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Discontinued because of reaching the maximum lifetime of a patent

Effective date: 20041113