GB1523721A - Surveillance systems - Google Patents

Surveillance systems

Info

Publication number
GB1523721A
GB1523721A GB33338/74A GB3333874A GB1523721A GB 1523721 A GB1523721 A GB 1523721A GB 33338/74 A GB33338/74 A GB 33338/74A GB 3333874 A GB3333874 A GB 3333874A GB 1523721 A GB1523721 A GB 1523721A
Authority
GB
United Kingdom
Prior art keywords
scene
television
sections
tube
angle
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
GB33338/74A
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.)
Hawker Siddeley Dynamics Ltd
Original Assignee
Hawker Siddeley Dynamics 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 Hawker Siddeley Dynamics Ltd filed Critical Hawker Siddeley Dynamics Ltd
Priority to GB33338/74A priority Critical patent/GB1523721A/en
Publication of GB1523721A publication Critical patent/GB1523721A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19617—Surveillance camera constructional details
    • G08B13/19626—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses
    • G08B13/19628—Surveillance camera constructional details optical details, e.g. lenses, mirrors or multiple lenses of wide angled cameras and camera groups, e.g. omni-directional cameras, fish eye, single units having multiple cameras achieving a wide angle view
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19639—Details of the system layout
    • G08B13/19641—Multiple cameras having overlapping views on a single scene

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Telescopes (AREA)

Abstract

1523721 Television HAWKER SIDDELEY DYNAMICS Ltd 22 Oct 1975 [29 July 1974] 33338/74 Heading H4F A wide angle television surveillance system comprises a plurality of differently orientated optical elements for viewing the total azimuth angle of the scene to be surveyed α# divided into a series of different equal azimuthal sections, and means for combining said different azimuthal sections of the scene to provide, in a television display for an observer or automatic monitoring apparatus, a corresponding plurality of sections arranged one above another in the display. The optical elements comprise a separate object lens L1-L3, Fig. 1, for each section, masks being used to restrict the angle of scene accepted by each lens, and the several azimuthal sections of the image scene being received on a detector surface D on areas alongside one-another. The total image formation is scanned by a T.V. camera having a tube 11, Fig. 3. A multi-facet optical fibre block 10 is mounted on tube 11. The facets 13-15 of the block are so orientated as to lie perpendicular to the optical axis of a respective object lens at its focal plane to correct for trapezium distortion.
GB33338/74A 1975-10-22 1975-10-22 Surveillance systems Expired GB1523721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33338/74A GB1523721A (en) 1975-10-22 1975-10-22 Surveillance systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33338/74A GB1523721A (en) 1975-10-22 1975-10-22 Surveillance systems

Publications (1)

Publication Number Publication Date
GB1523721A true GB1523721A (en) 1978-09-06

Family

ID=10351665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33338/74A Expired GB1523721A (en) 1975-10-22 1975-10-22 Surveillance systems

Country Status (1)

Country Link
GB (1) GB1523721A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479991A1 (en) * 1980-04-08 1981-10-09 American District Telegraph Co PASSIVE INFRARED DEVICE FOR DETECTING INTRUSION
US5844520A (en) * 1979-05-16 1998-12-01 British Aerospace Plc Surveillance apparatus
WO2008129552A1 (en) * 2007-04-19 2008-10-30 Dvp Technologies Ltd. Imaging system and method for use in monitoring a field of regard

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5844520A (en) * 1979-05-16 1998-12-01 British Aerospace Plc Surveillance apparatus
FR2479991A1 (en) * 1980-04-08 1981-10-09 American District Telegraph Co PASSIVE INFRARED DEVICE FOR DETECTING INTRUSION
WO2008129552A1 (en) * 2007-04-19 2008-10-30 Dvp Technologies Ltd. Imaging system and method for use in monitoring a field of regard
US8937651B2 (en) 2007-04-19 2015-01-20 Dvp Technologies Ltd. Imaging system and method for use in monitoring a field of regard

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee