FR2322496A1 - Dispositif de correction d'histogrammes d'image de television - Google Patents

Dispositif de correction d'histogrammes d'image de television

Info

Publication number
FR2322496A1
FR2322496A1 FR7625648A FR7625648A FR2322496A1 FR 2322496 A1 FR2322496 A1 FR 2322496A1 FR 7625648 A FR7625648 A FR 7625648A FR 7625648 A FR7625648 A FR 7625648A FR 2322496 A1 FR2322496 A1 FR 2322496A1
Authority
FR
France
Prior art keywords
window
histogram
area
histograms
selected number
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Withdrawn
Application number
FR7625648A
Other languages
English (en)
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.)
Raytheon Co
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of FR2322496A1 publication Critical patent/FR2322496A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Picture Signal Circuits (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Indicating Measured Values (AREA)
FR7625648A 1975-08-25 1976-08-24 Dispositif de correction d'histogrammes d'image de television Withdrawn FR2322496A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/608,319 US3983320A (en) 1975-08-25 1975-08-25 Raster display histogram equalization

Publications (1)

Publication Number Publication Date
FR2322496A1 true FR2322496A1 (fr) 1977-03-25

Family

ID=24435967

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625648A Withdrawn FR2322496A1 (fr) 1975-08-25 1976-08-24 Dispositif de correction d'histogrammes d'image de television

Country Status (6)

Country Link
US (1) US3983320A (fr)
DE (1) DE2636093C3 (fr)
FR (1) FR2322496A1 (fr)
GB (1) GB1504675A (fr)
IL (1) IL50081A (fr)
SE (1) SE7609322L (fr)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406359A1 (fr) * 1977-10-11 1979-05-11 Thomson Csf Procede et dispositif de traitement d'image pour systeme de visualisation et systeme de visualisation comprenant un tel dispositif
DE2806176C3 (de) * 1978-02-14 1980-08-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren und Vorrichtung zur Gewinnung und Aufzeichnung von Ultraschall-Schnittbildern
US4215414A (en) * 1978-03-07 1980-07-29 Hughes Aircraft Company Pseudogaussian video output processing for digital display
US4212072A (en) * 1978-03-07 1980-07-08 Hughes Aircraft Company Digital scan converter with programmable transfer function
US4214271A (en) * 1979-02-16 1980-07-22 The United States Of America As Represented By The Secretary Of The Army Technique for DC restoration in AC coupled display systems
GB2046051B (en) * 1979-03-29 1983-01-26 Philips Electronic Associated Real time histogram modification system for image processing
FR2456448A1 (fr) * 1979-05-11 1980-12-05 Thomson Csf Dispositif de commande automatique de la fonction de transfert d'un systeme de transmission videofrequence en vue d'ameliorer la perception des images
US4261040A (en) * 1979-06-01 1981-04-07 The Boeing Company M/S 7E-25 Method and apparatus for the analysis of scanned data
IL58119A (en) * 1979-08-27 1983-03-31 Yeda Res & Dev Histogram image enhancement system
FR2538654B1 (fr) * 1979-09-21 1988-12-09 Emi Ltd Procede et appareil pour la commande des niveaux de gris representes par un signal video
US4363104A (en) * 1980-09-22 1982-12-07 Hughes Aircraft Company Imaging system having multiple image copying and hierarchical busing
GB2195214B (en) * 1980-12-10 1988-10-26 Emi Ltd Automatic focussing system for an optical system
US4394744A (en) * 1981-02-12 1983-07-19 The United States Of America As Represented By The Secretary Of The Navy Real-time amplitude histogram shaper
DE3107901A1 (de) * 1981-03-02 1982-09-16 Siemens AG, 1000 Berlin und 8000 München Digitale echtzeit-fernseh-bildverarbeitungseinrichtung
FR2506549A1 (fr) * 1981-05-22 1982-11-26 Thomson Csf Dispositif de correction des informations couleur fournies par les tubes analyseurs d'une camera en vue d'ameliorer la perception des images
US4395732A (en) * 1981-08-19 1983-07-26 Motorola Inc. Statistically adaptive analog to digital converter
US4445138A (en) * 1981-12-21 1984-04-24 Hughes Aircraft Company Real time dynamic range compression for image enhancement
US4493106A (en) * 1981-12-24 1985-01-08 International Computers Limited Image digitizing systems
US4403253A (en) * 1981-12-28 1983-09-06 General Electric Company Uniform distribution video processor with controlled reference voltages
US4507741A (en) * 1982-02-08 1985-03-26 Rockwell International Corporation Computing device
CA1178376A (fr) * 1982-05-18 1984-11-20 Willard A. Young Systeme de traitement de signaux radar
DE3244692A1 (de) * 1982-11-30 1984-05-30 Kraft, Hans Rainer, Dr.-Ing., 1000 Berlin Schaltungsanordnung zur erfassung der grauwertverteilung eines digitalisierten bildes
AU573235B2 (en) * 1983-07-29 1988-06-02 Sony Corporation Multi-channel low-frequency high-definition video signal transmission system
FI842333A (fi) * 1984-06-08 1985-12-09 Valtion Teknillinen Tutkimuskeskus Foerfarande foer identifiering av de mest foeraendrade bildomraodena i levande videosignal.
US5083204A (en) * 1984-10-01 1992-01-21 Hughes Aircraft Company Signal processor for an imaging sensor system
US4642683A (en) * 1985-05-06 1987-02-10 Eastman Kodak Company Digital image processing method for images with bimodal tone value distribution
GB8521019D0 (en) * 1985-08-22 1986-10-01 Rank Pullin Controls Ltd Imaging apparatus
US4742551A (en) * 1985-10-07 1988-05-03 Fairchild Camera & Instrument Corporation Multistatistics gatherer
US4731863A (en) * 1986-04-07 1988-03-15 Eastman Kodak Company Digital image processing method employing histogram peak detection
US4868651A (en) * 1988-05-17 1989-09-19 S&S Inficon, Inc. Digital radiography with image brightness and contrast normalization
US5537483A (en) * 1989-10-03 1996-07-16 Staplevision, Inc. Automated quality assurance image processing system
FR2669801B1 (fr) * 1990-11-23 1997-01-31 Thomson Trt Defense Dispositif automatique de reglage du contraste d'images issues d'une camera et camera comportant un tel dispositif.
EP0525359B1 (fr) * 1991-07-12 1999-05-06 Educational Testing Service Système pour le traitement d'images
DE69213380T2 (de) * 1991-09-27 1997-03-20 Agfa Gevaert Nv Reproduktionsverfahren für medizinische Bilder,das optimale Bildqualität für Diagnose herstellt
EP0536821B1 (fr) * 1991-09-27 1996-09-04 Agfa-Gevaert N.V. Procédé de reproduction d'images médicales pour générer des images de qualité optimale pour diagnostic
FI94306C (fi) * 1993-07-15 1995-08-10 Nokia Technology Gmbh Menetelmä televisiokuvan pienten kuvasegmenttien liikevektoreiden määrittämiseksi
US5450502A (en) * 1993-10-07 1995-09-12 Xerox Corporation Image-dependent luminance enhancement
US5832140A (en) * 1993-12-14 1998-11-03 Staplevision Inc. Automated quality assurance image processing system
EP0710926A3 (fr) * 1994-10-31 1996-10-02 Maz Mikroelektronik Anwendungs Procédé d'obtention et analyse d'histogrammes
KR100261214B1 (ko) * 1997-02-27 2000-07-01 윤종용 영상처리 시스템의 콘트라스트 확장장치에서 히스토그램 등화방법 및 장치
US6915241B2 (en) * 2001-04-20 2005-07-05 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method for segmentation and identification of nonstationary time series
US6847905B2 (en) * 2002-02-12 2005-01-25 Tektronix, Inc. Architecture providing increased information display for long acquisitions or constrained memory bandwidth
WO2005065028A2 (fr) * 2004-01-07 2005-07-21 Ramot At Tel Aviv University Ltd. Procedes et appareils d'analyse d'images ultrasonores
US8212741B2 (en) * 2005-06-01 2012-07-03 Koninklijke Philips Electronics N.V. Dual display device
EP1840831A1 (fr) * 2006-03-31 2007-10-03 Sony Deutschland Gmbh Égalisation d'histogramme adaptative pour des images présentant un fort contraste local
CN110889814B (zh) * 2019-11-21 2024-04-26 上海无线电设备研究所 一种基于Sysgen的可见光图像直方图增强方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919707A (en) * 1967-09-05 1975-11-11 Hughes Aircraft Co Radar video processing system
US3757038A (en) * 1969-09-04 1973-09-04 Time Inc Image analyzing apparatus
US3829614A (en) * 1970-02-11 1974-08-13 Saab Scania Ab Automatic video contrast tracker
DE2011470B2 (de) * 1970-03-11 1971-12-23 Siemens AG, 1000 Berlin und 8000 München, Zeiss, Carl, 7920 Heidenheim Verfahren zum auswerten eines nach einem rasterverfahren auf genommenen bildes
US3903357A (en) * 1971-12-06 1975-09-02 Westinghouse Electric Corp Adaptive gate video gray level measurement and tracker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/71 *

Also Published As

Publication number Publication date
DE2636093A1 (de) 1977-03-03
SE7609322L (sv) 1977-02-26
GB1504675A (en) 1978-03-22
IL50081A0 (en) 1976-10-31
DE2636093B2 (de) 1978-07-06
IL50081A (en) 1978-06-15
US3983320A (en) 1976-09-28
DE2636093C3 (de) 1979-03-01

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Legal Events

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