GB2112602B - Image digitising system - Google Patents

Image digitising system

Info

Publication number
GB2112602B
GB2112602B GB08214933A GB8214933A GB2112602B GB 2112602 B GB2112602 B GB 2112602B GB 08214933 A GB08214933 A GB 08214933A GB 8214933 A GB8214933 A GB 8214933A GB 2112602 B GB2112602 B GB 2112602B
Authority
GB
United Kingdom
Prior art keywords
image
intensity
new
look
captured
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
GB08214933A
Other versions
GB2112602A (en
Inventor
Costas Daskalakis
Peter Richard Miles
Hassan Farhangi
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.)
Fujitsu Services Ltd
Original Assignee
Fujitsu Services 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 Fujitsu Services Ltd filed Critical Fujitsu Services Ltd
Priority to GB08214933A priority Critical patent/GB2112602B/en
Publication of GB2112602A publication Critical patent/GB2112602A/en
Application granted granted Critical
Publication of GB2112602B publication Critical patent/GB2112602B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Analysis (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

An image is scanned by a TV camera 9 and the resultant signal digitised in an analogue to digital converter 12 the output of which represents the measured intensity of each picture element of the image. The values relating to selected lines may be captured in a line store 13. Alternatively the number of picture elements of a selected intensity may be counted during the count of a scan in a level counter 14, using a look-up table 15 as a mask to select the desired level. After all levels have been similarly counted the resultant histogram is modified by mapping each intensity into a new value with a smaller number of bits in such a way as to tend to equalise the number of picture elements in each new level. The new values are loaded into the look-up table 15 and in subsequent scans the measured intensities are converted into the new values, which may be displayed on a monitor 16 or captured in the line store 13. <IMAGE>
GB08214933A 1981-12-24 1982-05-21 Image digitising system Expired GB2112602B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08214933A GB2112602B (en) 1981-12-24 1982-05-21 Image digitising system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8138875 1981-12-24
GB08214933A GB2112602B (en) 1981-12-24 1982-05-21 Image digitising system

Publications (2)

Publication Number Publication Date
GB2112602A GB2112602A (en) 1983-07-20
GB2112602B true GB2112602B (en) 1985-08-07

Family

ID=26281620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08214933A Expired GB2112602B (en) 1981-12-24 1982-05-21 Image digitising system

Country Status (1)

Country Link
GB (1) GB2112602B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI842333A (en) * 1984-06-08 1985-12-09 Valtion Teknillinen Tutkimuskeskus FOERFARANDE FOER IDENTIFIERING AV DE MEST FOERAENDRADE BILDOMRAODENA I LEVANDE VIDEOSIGNAL.
JPS61168078A (en) * 1985-01-15 1986-07-29 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Image processing
GB8521019D0 (en) * 1985-08-22 1986-10-01 Rank Pullin Controls Ltd Imaging apparatus
GB2223643B (en) * 1988-10-05 1993-04-07 Marconi Gec Ltd Data processing apparatus
DE69229085T2 (en) * 1991-07-12 1999-11-18 Educational Testing Service, Princeton Image processing system
US6084640A (en) * 1995-09-29 2000-07-04 Raytheon Company Histogram chip for line summing, line grabbing and histogramming in a thermal imaging system

Also Published As

Publication number Publication date
GB2112602A (en) 1983-07-20

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Legal Events

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