WO1995031065A3 - Method and device for adjusting a hard-copy-unit - Google Patents

Method and device for adjusting a hard-copy-unit Download PDF

Info

Publication number
WO1995031065A3
WO1995031065A3 PCT/IB1995/000314 IB9500314W WO9531065A3 WO 1995031065 A3 WO1995031065 A3 WO 1995031065A3 IB 9500314 W IB9500314 W IB 9500314W WO 9531065 A3 WO9531065 A3 WO 9531065A3
Authority
WO
WIPO (PCT)
Prior art keywords
film
copy
hard
unit
adjusting
Prior art date
Application number
PCT/IB1995/000314
Other languages
French (fr)
Other versions
WO1995031065A2 (en
Inventor
Hendrik Boxma
Original Assignee
Philips Electronics Nv
Philips Norden Ab
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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Priority to JP7528814A priority Critical patent/JPH09500514A/en
Priority to EP95915298A priority patent/EP0707771A1/en
Publication of WO1995031065A2 publication Critical patent/WO1995031065A2/en
Publication of WO1995031065A3 publication Critical patent/WO1995031065A3/en

Links

Classifications

    • 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
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
    • H04N1/4078—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture using gradational references, e.g. grey-scale test pattern analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

A hard-copy-unit (HCU) or camera for recording medical images on film needs regular calibration to compensate for differences in film and film processing. This can be done by making a hard copy (HC) with a number or predetermined grey values and measuring the resulting optical densities on the hard copy. From the resulting optical density values new brightness (B) and contrast (C) parameters are determined that will result in the correct maximum and minimum optical densities of subsequently exposed and processed images on film.
PCT/IB1995/000314 1994-05-06 1995-05-03 Method and device for adjusting a hard-copy-unit WO1995031065A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7528814A JPH09500514A (en) 1994-05-06 1995-05-03 Hard copy unit adjustment method and apparatus
EP95915298A EP0707771A1 (en) 1994-05-06 1995-05-03 Method and device for adjusting a hard-copy-unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94201260 1994-05-06
EP94201260.0 1994-05-06

Publications (2)

Publication Number Publication Date
WO1995031065A2 WO1995031065A2 (en) 1995-11-16
WO1995031065A3 true WO1995031065A3 (en) 1995-12-28

Family

ID=8216851

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1995/000314 WO1995031065A2 (en) 1994-05-06 1995-05-03 Method and device for adjusting a hard-copy-unit

Country Status (4)

Country Link
US (1) US5721623A (en)
EP (1) EP0707771A1 (en)
JP (1) JPH09500514A (en)
WO (1) WO1995031065A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09135354A (en) * 1995-11-10 1997-05-20 Canon Inc Device and method for processing image
JPH10133437A (en) * 1996-10-28 1998-05-22 Fuji Xerox Co Ltd Image forming device
JP3363720B2 (en) * 1996-12-02 2003-01-08 キヤノン株式会社 INK JET RECORDING METHOD, INK JET RECORDING APPARATUS USED IN SUCH METHOD, AND INK JET RECORDED MATTER RECORDED BY SUCH METHOD
US6008907A (en) * 1997-10-15 1999-12-28 Polaroid Corporation Printer calibration
EP1027679B1 (en) 1997-11-03 2003-04-23 Kodak Polychrome Graphics LLC Method and device for calibrating an imaging apparatus having multiple imaging outputs
US6023285A (en) * 1997-11-26 2000-02-08 Eastman Kodak Company Establishment of calibration of a photothermographic laser printer and processor system
TW420927B (en) * 1999-01-08 2001-02-01 Umax Data Systems Inc Image scanning and color correction method for scanner
US7221464B2 (en) * 2000-12-01 2007-05-22 Konica Corporation Image recording apparatus and test pattern for evaluating recorded image
JP3460150B2 (en) * 2001-11-28 2003-10-27 財団法人新産業創造研究機構 Medical image editing program and medical image editing device
EP1381219A1 (en) * 2002-07-09 2004-01-14 Agfa-Gevaert Quality assessment of hard copy recorders.
US6871932B2 (en) * 2002-07-09 2005-03-29 Agfa-Gevaert Quality assessment of hard copy recorders
US7162172B2 (en) * 2004-11-30 2007-01-09 Xerox Corporation Semi-automatic image quality adjustment for multiple marking engine systems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278347A (en) * 1979-03-13 1981-07-14 Fuji Photo Film Co., Ltd. Cathode-ray tube image recording device
EP0196851A2 (en) * 1985-03-25 1986-10-08 Johnson & Johnson Ultrasound Inc. Photographic copier image contrast control
US4687334A (en) * 1984-04-17 1987-08-18 Fuji Photo Film Co., Ltd. Method for adjusting density of color picture in color picture output device
US4700058A (en) * 1985-08-01 1987-10-13 General Electric Company Film writing system with closed loop control for electronic images
US4751377A (en) * 1985-12-27 1988-06-14 Fuji Photo Film Co., Ltd. Light beam scanning recording apparatus and method of correcting intensity of image to be recorded thereby
EP0395216A2 (en) * 1989-04-21 1990-10-31 Camtronics, Ltd. Apparatus and method for controlling film density for an apparatus for exposing photographic film with image data

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US4002914A (en) * 1975-01-02 1977-01-11 Maxim Diagnostic Imaging Transparency contrast enhancement system
US4091419A (en) * 1976-06-22 1978-05-23 Rhee Dennis W Combination contrast/brightness control for a television receiver
US4679087A (en) * 1984-03-12 1987-07-07 Loge/Dunn Instruments, Inc. Method and apparatus for photographing video images of either polarity without CRT brightness or contrast readjustment
JPH0628419B2 (en) * 1984-06-21 1994-04-13 ソニー株式会社 Image adjustment device
US4739375A (en) * 1986-09-04 1988-04-19 Ecb Technologies, Inc. Apparatus for producing internegatives and slides
US4730214A (en) * 1986-09-15 1988-03-08 General Electric Company Method and apparatus for correlating video and film images produced from electronic data
US4757334A (en) * 1986-12-09 1988-07-12 Ivan Volent System for density correction of medical imaging film hard copy
US4710785A (en) * 1986-12-12 1987-12-01 Eastman Kodak Company Process control for electrostatographic machine
EP0305327A1 (en) * 1987-08-21 1989-03-01 Ilford Ag Method and device for making prints of slides
US4939581A (en) * 1988-11-23 1990-07-03 Hanoch Shalit Method and system in video image hard copy reproduction
US5345315A (en) * 1988-11-23 1994-09-06 Imatec, Ltd. Method and system for improved tone and color reproduction of electronic image on hard copy using a closed loop control
IL98622A (en) * 1991-06-25 1996-10-31 Scitex Corp Ltd Method and apparatus for employing neural networks in color image processing
US5369499A (en) * 1991-11-13 1994-11-29 Eastman Kodak Company Calibration method for video image reproduction with electronic printer and video monitor
US5317425A (en) * 1992-02-10 1994-05-31 Eastman Kodak Company Technique for use in conjunction with an imaging system for providing an appearance match between two images and for calibrating the system thereto
JPH08506944A (en) * 1993-02-04 1996-07-23 シーメンス メディカル システムズ インコーポレイテッド Imaging system with automatic hardcopy compensation
US5328787A (en) * 1993-05-24 1994-07-12 Eastman Kodak Company Method for assessing and controlling the sensitometric characteristics of photographic products
US5510896A (en) * 1993-06-18 1996-04-23 Xerox Corporation Automatic copy quality correction and calibration
US5546165A (en) * 1994-10-05 1996-08-13 Eastman Kodak Company Scanner as test print densitometer for compensating overall process drift and nonuniformity

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278347A (en) * 1979-03-13 1981-07-14 Fuji Photo Film Co., Ltd. Cathode-ray tube image recording device
US4687334A (en) * 1984-04-17 1987-08-18 Fuji Photo Film Co., Ltd. Method for adjusting density of color picture in color picture output device
EP0196851A2 (en) * 1985-03-25 1986-10-08 Johnson & Johnson Ultrasound Inc. Photographic copier image contrast control
US4700058A (en) * 1985-08-01 1987-10-13 General Electric Company Film writing system with closed loop control for electronic images
US4751377A (en) * 1985-12-27 1988-06-14 Fuji Photo Film Co., Ltd. Light beam scanning recording apparatus and method of correcting intensity of image to be recorded thereby
EP0395216A2 (en) * 1989-04-21 1990-10-31 Camtronics, Ltd. Apparatus and method for controlling film density for an apparatus for exposing photographic film with image data

Also Published As

Publication number Publication date
JPH09500514A (en) 1997-01-14
WO1995031065A2 (en) 1995-11-16
EP0707771A1 (en) 1996-04-24
US5721623A (en) 1998-02-24

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