JPH0584505B2 - - Google Patents

Info

Publication number
JPH0584505B2
JPH0584505B2 JP60179867A JP17986785A JPH0584505B2 JP H0584505 B2 JPH0584505 B2 JP H0584505B2 JP 60179867 A JP60179867 A JP 60179867A JP 17986785 A JP17986785 A JP 17986785A JP H0584505 B2 JPH0584505 B2 JP H0584505B2
Authority
JP
Japan
Prior art keywords
reading
signal
radiation
histogram
image
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
JP60179867A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6239842A (ja
Inventor
Nobuyoshi Nakajima
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP60179867A priority Critical patent/JPS6239842A/ja
Priority to US07/016,592 priority patent/US4804842A/en
Publication of JPS6239842A publication Critical patent/JPS6239842A/ja
Publication of JPH0584505B2 publication Critical patent/JPH0584505B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • 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
    • G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Radiography Using Non-Light Waves (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
JP60179867A 1985-08-15 1985-08-15 放射線画像情報読取方法 Granted JPS6239842A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP60179867A JPS6239842A (ja) 1985-08-15 1985-08-15 放射線画像情報読取方法
US07/016,592 US4804842A (en) 1985-08-15 1987-02-19 Radiation image read-out method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60179867A JPS6239842A (ja) 1985-08-15 1985-08-15 放射線画像情報読取方法

Publications (2)

Publication Number Publication Date
JPS6239842A JPS6239842A (ja) 1987-02-20
JPH0584505B2 true JPH0584505B2 (en, 2012) 1993-12-02

Family

ID=16073296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60179867A Granted JPS6239842A (ja) 1985-08-15 1985-08-15 放射線画像情報読取方法

Country Status (2)

Country Link
US (1) US4804842A (en, 2012)
JP (1) JPS6239842A (en, 2012)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63133760A (ja) * 1986-11-25 1988-06-06 Fuji Photo Film Co Ltd 照射野認識方法および画像処理条件決定方法
JP2631663B2 (ja) * 1987-08-20 1997-07-16 富士写真フイルム株式会社 所望画像信号範囲決定方法
EP0334230B1 (en) * 1988-03-19 1995-09-06 Fuji Photo Film Co., Ltd. Method for detecting prospective contour points of an irradiation field
JPH0792830B2 (ja) * 1988-03-19 1995-10-09 富士写真フイルム株式会社 放射線画像情報読取方法
DE68927031T2 (de) * 1988-09-19 1997-01-23 Fuji Photo Film Co Ltd Verfahren zur Bestimmung der gewünschten Bereiche eines Bildsignals und Verfahren zur Bestimmung der gewünschten Bildbereiche
US5068788A (en) * 1988-11-29 1991-11-26 Columbia Scientific Inc. Quantitative computed tomography system
JP2704288B2 (ja) * 1989-04-14 1998-01-26 富士写真フイルム株式会社 被写体像内画像点決定方法
US5093871A (en) * 1989-10-10 1992-03-03 Unisys Corporation Method and apparatus for effecting background suppression of image data
US5150433A (en) * 1989-12-01 1992-09-22 Eastman Kodak Company Histogram/variance mechanism for detecting presence of an edge within block of image data
JP2768786B2 (ja) * 1990-02-20 1998-06-25 キヤノン株式会社 画像読み取り装置
US5214294A (en) * 1991-04-19 1993-05-25 Fuji Photo Film Co., Ltd. Scan reading method including density measuring and edge detection
US5495536A (en) * 1991-05-08 1996-02-27 Sandia Corporation Image processing system and method for recognizing and removing shadows from the image of a monitored scene
US5249241A (en) * 1991-07-09 1993-09-28 The United States Of America As Represented By The Secretary Of The Air Force Real-time automated scene display for infrared cameras
US5343390A (en) * 1992-02-28 1994-08-30 Arch Development Corporation Method and system for automated selection of regions of interest and detection of septal lines in digital chest radiographs
US5335293A (en) * 1992-06-16 1994-08-02 Key Technology, Inc. Product inspection method and apparatus
US5268967A (en) * 1992-06-29 1993-12-07 Eastman Kodak Company Method for automatic foreground and background detection in digital radiographic images
DE69312257T2 (de) * 1993-02-11 1998-01-29 Agfa Gevaert Nv Strahlungsfelderkennungsverfahren
JP3550203B2 (ja) * 1995-01-10 2004-08-04 富士写真フイルム株式会社 画像解析装置
US5901240A (en) * 1996-12-12 1999-05-04 Eastman Kodak Company Method for detecting the collimation field in a digital radiography
US5978443A (en) * 1997-11-10 1999-11-02 General Electric Company Automated removal of background regions from radiographic images
US6212291B1 (en) 1998-01-29 2001-04-03 Eastman Kodak Company Method for recognizing multiple irradiation fields in digital radiography

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512429A (en) * 1978-07-12 1980-01-29 Fuji Photo Film Co Ltd Radioactive image reader
US4346295A (en) * 1978-12-26 1982-08-24 Fuji Photo Film Co., Ltd. Radiation image read out device
JPS56135838A (en) * 1980-03-26 1981-10-23 Fuji Photo Film Co Ltd Method for deciding brightness reproduction unrequired part in image reproduction
JPS58130030A (ja) * 1981-10-05 1983-08-03 工業技術院長 Ｘ線ディジタル画像処理装置
JPS5919939A (ja) * 1982-07-27 1984-02-01 Fuji Photo Film Co Ltd 放射線画像情報読取方法
JPS5981642A (ja) * 1982-11-01 1984-05-11 Fuji Photo Film Co Ltd 写真画像濃度情報収録方法
JPS60108834A (ja) * 1983-11-17 1985-06-14 Fuji Photo Film Co Ltd 放射線画像情報の収録スケ−ル決定方法
DE3588169T2 (de) * 1984-07-31 1998-02-19 Fuji Photo Film Co Ltd Verfahren zur Detektion einer Bildbelichtungsfläche in einem Bildauslesevorgang
JPH11395A (ja) * 1997-06-09 1999-01-06 Teruo Kasuga 腹膜透析用入浴パッド

Also Published As

Publication number Publication date
US4804842A (en) 1989-02-14
JPS6239842A (ja) 1987-02-20

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees