GB2061660B - Modifying the contrast of an image - Google Patents

Modifying the contrast of an image

Info

Publication number
GB2061660B
GB2061660B GB7936046A GB7936046A GB2061660B GB 2061660 B GB2061660 B GB 2061660B GB 7936046 A GB7936046 A GB 7936046A GB 7936046 A GB7936046 A GB 7936046A GB 2061660 B GB2061660 B GB 2061660B
Authority
GB
United Kingdom
Prior art keywords
modifying
contrast
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
Application number
GB7936046A
Other versions
GB2061660A (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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Priority to GB7936046A priority Critical patent/GB2061660B/en
Publication of GB2061660A publication Critical patent/GB2061660A/en
Application granted granted Critical
Publication of GB2061660B publication Critical patent/GB2061660B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
GB7936046A 1979-10-17 1979-10-17 Modifying the contrast of an image Expired GB2061660B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7936046A GB2061660B (en) 1979-10-17 1979-10-17 Modifying the contrast of an image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7936046A GB2061660B (en) 1979-10-17 1979-10-17 Modifying the contrast of an image

Publications (2)

Publication Number Publication Date
GB2061660A GB2061660A (en) 1981-05-13
GB2061660B true GB2061660B (en) 1983-08-24

Family

ID=10508572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7936046A Expired GB2061660B (en) 1979-10-17 1979-10-17 Modifying the contrast of an image

Country Status (1)

Country Link
GB (1) GB2061660B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195214B (en) * 1980-12-10 1988-10-26 Emi Ltd Automatic focussing system for an optical system
US4536790A (en) * 1982-11-26 1985-08-20 Thomson-Csf Broadcast, Inc. Apparatus and method for fluoroscopic imaging of a body
JPS6075033A (en) * 1983-09-30 1985-04-27 株式会社東芝 X-ray diagnostic apparatus
JPS61203785A (en) * 1985-03-07 1986-09-09 Dainippon Screen Mfg Co Ltd Method and device for smoothing binary picture data
GB8521019D0 (en) * 1985-08-22 1986-10-01 Rank Pullin Controls Ltd Imaging apparatus
US4841555A (en) * 1987-08-03 1989-06-20 University Of Chicago Method and system for removing scatter and veiling glate and other artifacts in digital radiography
US4943934A (en) * 1987-12-04 1990-07-24 Hamamatsu Photonics Kabushiki Kaisha Picture operation unit for performing operations on intensity data of neighboring picture elements
EP0404396B1 (en) * 1989-06-19 1994-10-05 International Business Machines Corporation Image capture system and method
DE69228629T2 (en) * 1991-06-20 1999-09-09 Canon K.K. Arrangement of several image sensors in one video camera
KR100206319B1 (en) * 1995-12-13 1999-07-01 윤종용 Local contrast improving method and apparatus of a video signal
GB2414613A (en) * 2004-05-28 2005-11-30 Sony Uk Ltd Modifying pixels in dependence on surrounding test region
GB2417381A (en) * 2004-08-20 2006-02-22 Apical Limited Dynamic range compression preserving local image contrast

Also Published As

Publication number Publication date
GB2061660A (en) 1981-05-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee