FR2293011A1 - Perfectionnements aux procedes et dispositifs de normalisation d'images numeriques - Google Patents

Perfectionnements aux procedes et dispositifs de normalisation d'images numeriques

Info

Publication number
FR2293011A1
FR2293011A1 FR7431174A FR7431174A FR2293011A1 FR 2293011 A1 FR2293011 A1 FR 2293011A1 FR 7431174 A FR7431174 A FR 7431174A FR 7431174 A FR7431174 A FR 7431174A FR 2293011 A1 FR2293011 A1 FR 2293011A1
Authority
FR
France
Prior art keywords
image
point
devices
digital image
histogram
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.)
Granted
Application number
FR7431174A
Other languages
English (en)
French (fr)
Other versions
FR2293011B1 (cg-RX-API-DMAC10.html
Inventor
Claude Roche
Jean-Paul Caillou
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.)
Gouvernement de la Republique Francaise
Original Assignee
Gouvernement de la Republique Francaise
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 Gouvernement de la Republique Francaise filed Critical Gouvernement de la Republique Francaise
Priority to FR7431174A priority Critical patent/FR2293011A1/fr
Publication of FR2293011A1 publication Critical patent/FR2293011A1/fr
Application granted granted Critical
Publication of FR2293011B1 publication Critical patent/FR2293011B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
    • H04N1/4074—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original using histograms

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)
FR7431174A 1974-09-16 1974-09-16 Perfectionnements aux procedes et dispositifs de normalisation d'images numeriques Granted FR2293011A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7431174A FR2293011A1 (fr) 1974-09-16 1974-09-16 Perfectionnements aux procedes et dispositifs de normalisation d'images numeriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7431174A FR2293011A1 (fr) 1974-09-16 1974-09-16 Perfectionnements aux procedes et dispositifs de normalisation d'images numeriques

Publications (2)

Publication Number Publication Date
FR2293011A1 true FR2293011A1 (fr) 1976-06-25
FR2293011B1 FR2293011B1 (cg-RX-API-DMAC10.html) 1977-11-04

Family

ID=9143102

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7431174A Granted FR2293011A1 (fr) 1974-09-16 1974-09-16 Perfectionnements aux procedes et dispositifs de normalisation d'images numeriques

Country Status (1)

Country Link
FR (1) FR2293011A1 (cg-RX-API-DMAC10.html)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452836A1 (fr) * 1979-03-29 1980-10-24 Philips Nv Systeme pour la modification d'histogramme en temps reel
JPH02163882A (ja) * 1988-10-24 1990-06-25 Hughes Aircraft Co イメージコントラスト強調方法
FR2647918A1 (fr) * 1989-06-01 1990-12-07 France Etat Armement Procede de traitement d'image par analyse du contraste d'echelle
EP0249922A3 (en) * 1986-06-16 1991-04-24 Kabushiki Kaisha Toshiba Method for realizing high-speed statistic operation processing and image data processing apparatus for embodying the method
EP0342549A3 (en) * 1988-05-16 1991-10-09 Ezel Inc. Image processing method
EP0383269A3 (en) * 1989-02-14 1992-02-26 Adler Research Associates Regionally adaptive imaging techniques
EP0639818A1 (en) * 1993-08-16 1995-02-22 Agfa-Gevaert N.V. Method of monitoring the sensitivity of a system for reading a radiation image stored in a photostimulable phosphor screen
EP0785668A1 (en) * 1996-01-18 1997-07-23 Konica Corporation Method and apparatus for analyzing and correcting the gradation of an original
EP0848545A3 (en) * 1996-12-10 2000-08-02 Eastman Kodak Company Method for estimating and adjusting digital image contrast
CN114730330A (zh) * 2020-02-11 2022-07-08 三星电子株式会社 用于执行反卷积计算的电子设备及其控制方法

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452836A1 (fr) * 1979-03-29 1980-10-24 Philips Nv Systeme pour la modification d'histogramme en temps reel
EP0249922A3 (en) * 1986-06-16 1991-04-24 Kabushiki Kaisha Toshiba Method for realizing high-speed statistic operation processing and image data processing apparatus for embodying the method
EP0342549A3 (en) * 1988-05-16 1991-10-09 Ezel Inc. Image processing method
JPH02163882A (ja) * 1988-10-24 1990-06-25 Hughes Aircraft Co イメージコントラスト強調方法
EP0366099A3 (en) * 1988-10-24 1991-01-23 Hughes Aircraft Company Computationally efficient technique of image contrast enhancement
EP0383269A3 (en) * 1989-02-14 1992-02-26 Adler Research Associates Regionally adaptive imaging techniques
FR2647918A1 (fr) * 1989-06-01 1990-12-07 France Etat Armement Procede de traitement d'image par analyse du contraste d'echelle
EP0639818A1 (en) * 1993-08-16 1995-02-22 Agfa-Gevaert N.V. Method of monitoring the sensitivity of a system for reading a radiation image stored in a photostimulable phosphor screen
US5684888A (en) * 1993-08-16 1997-11-04 Agfa-Gevaert Method of monitoring the sensitivity of a system for reading a radiation image stored in a photostimulable phosphor screen
EP0785668A1 (en) * 1996-01-18 1997-07-23 Konica Corporation Method and apparatus for analyzing and correcting the gradation of an original
US5949962A (en) * 1996-01-18 1999-09-07 Konica Corporation Method for calculating color correction conditions, a method for determining an exposure amount for printing, an image processing apparatus, a printing exposure apparatus and a storage medium
EP0848545A3 (en) * 1996-12-10 2000-08-02 Eastman Kodak Company Method for estimating and adjusting digital image contrast
CN114730330A (zh) * 2020-02-11 2022-07-08 三星电子株式会社 用于执行反卷积计算的电子设备及其控制方法

Also Published As

Publication number Publication date
FR2293011B1 (cg-RX-API-DMAC10.html) 1977-11-04

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Legal Events

Date Code Title Description
ST Notification of lapse