SE8404576D0 - MACHINE VIDEO DETAILS DETECTOR - Google Patents

MACHINE VIDEO DETAILS DETECTOR

Info

Publication number
SE8404576D0
SE8404576D0 SE8404576A SE8404576A SE8404576D0 SE 8404576 D0 SE8404576 D0 SE 8404576D0 SE 8404576 A SE8404576 A SE 8404576A SE 8404576 A SE8404576 A SE 8404576A SE 8404576 D0 SE8404576 D0 SE 8404576D0
Authority
SE
Sweden
Prior art keywords
detector
machine video
video details
edge
video signal
Prior art date
Application number
SE8404576A
Other languages
Swedish (sv)
Other versions
SE8404576L (en
Inventor
R A Boie
G L Miller
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of SE8404576D0 publication Critical patent/SE8404576D0/en
Publication of SE8404576L publication Critical patent/SE8404576L/en

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
    • H04N5/142—Edging; Contouring

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Analysis (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Image Processing (AREA)

Abstract

The video output of a camera 120 viewing an object 110 is connected to an edge finding circuit 130 and a centroid finding circuit 140. Each of these produces an output which crosses zero at a time corresponding to the edges of the object occurring in the video signal (130) or to the average of these (140). An edge is assumed to occur when the video signal crosses its median value, it is alleged that problems due to variations in illumination and gradual changes in signal level are overcome by this technique. <IMAGE>
SE8404576A 1983-09-23 1984-09-12 MACHINE VIDEO DETAILS DETECTOR SE8404576L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53536283A 1983-09-23 1983-09-23

Publications (2)

Publication Number Publication Date
SE8404576D0 true SE8404576D0 (en) 1984-09-12
SE8404576L SE8404576L (en) 1985-03-24

Family

ID=24133841

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404576A SE8404576L (en) 1983-09-23 1984-09-12 MACHINE VIDEO DETAILS DETECTOR

Country Status (7)

Country Link
JP (1) JPS6091485A (en)
DE (1) DE3434624A1 (en)
FR (1) FR2552608A1 (en)
GB (1) GB2150384A (en)
IT (1) IT1176771B (en)
NL (1) NL8402881A (en)
SE (1) SE8404576L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849132A (en) * 1986-05-16 1989-07-18 Asahi Denka Kogyo Kabushiki Kaisha Surfactant composition having improved functions
EP0320122A3 (en) * 1987-11-30 1992-04-29 United Kingdom Atomic Energy Authority A method of position monitoring and apparatus therefor
GB8727963D0 (en) * 1987-11-30 1988-01-06 Atomic Energy Authority Uk Displacement monitoring
GB2216743B (en) * 1988-03-11 1993-03-03 Canon Kk Image sensing apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2004435B (en) * 1977-09-13 1982-06-30 Secr Defence Image discriminators
DE2800759C3 (en) * 1978-01-09 1984-08-23 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Method for converting a video signal into a two-level signal
DE2814891C3 (en) * 1978-04-06 1982-02-11 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Process for converting a video signal into a black and white signal
FR2425780A1 (en) * 1978-05-12 1979-12-07 Cit Alcatel SELF-ADAPTIVE CONVERTER IN ALL OR NOTHING OF AN IMAGE ANALYSIS SIGNAL
DE2836571C2 (en) * 1978-08-21 1982-04-15 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Process for converting a video signal into a black and white signal
FR2437125A1 (en) * 1978-09-21 1980-04-18 Cit Alcatel DEVICE FOR PROCESSING AN IMAGE ANALYSIS SIGNAL
GB2065299B (en) * 1979-12-13 1983-11-30 Philips Electronic Associated Object measuring arrangement
EP0055338A1 (en) * 1980-12-31 1982-07-07 International Business Machines Corporation Eye controlled user-machine communication
GB2103045A (en) * 1981-07-31 1983-02-09 Omer Mohamed Abdel Gadir Microprocessor-based eye motion analysis system

Also Published As

Publication number Publication date
GB2150384A (en) 1985-06-26
IT1176771B (en) 1987-08-18
SE8404576L (en) 1985-03-24
GB8423693D0 (en) 1984-10-24
JPS6091485A (en) 1985-05-22
IT8422786A0 (en) 1984-09-21
DE3434624A1 (en) 1985-04-04
NL8402881A (en) 1985-04-16
IT8422786A1 (en) 1986-03-21
FR2552608A1 (en) 1985-03-29

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Legal Events

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NAV Patent application has lapsed

Ref document number: 8404576-4

Effective date: 19860627