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GB2307808B - Surveillance apparatus - Google Patents

Surveillance apparatus

Info

Publication number
GB2307808B
GB2307808B GB7914725A GB7914725A GB2307808B GB 2307808 B GB2307808 B GB 2307808B GB 7914725 A GB7914725 A GB 7914725A GB 7914725 A GB7914725 A GB 7914725A GB 2307808 B GB2307808 B GB 2307808B
Authority
GB
United Kingdom
Prior art keywords
surveillance apparatus
surveillance
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 - Lifetime
Application number
GB7914725A
Other versions
GB2307808A (en
GB7914725D0 (en
Inventor
John Reginald Guppy
Geoffrey John Allcock
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.)
BAE Systems PLC
Original Assignee
British Aerospace PLC
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 British Aerospace PLC filed Critical British Aerospace PLC
Priority to GB7914725A priority Critical patent/GB2307808B/en
Publication of GB7914725D0 publication Critical patent/GB7914725D0/en
Publication of GB2307808A publication Critical patent/GB2307808A/en
Application granted granted Critical
Publication of GB2307808B publication Critical patent/GB2307808B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/781—Details
    • 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
    • G08B13/19606—Discriminating between target movement or movement in an area of interest and other non-signicative movements, e.g. target movements induced by camera shake or movements of pets, falling leaves, rotating fan
    • 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
    • G08B13/19665—Details related to the storage of video surveillance data
    • G08B13/19676—Temporary storage, e.g. cyclic memory, buffer storage on pre-alarm

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB7914725A 1979-04-27 1979-04-27 Surveillance apparatus Expired - Lifetime GB2307808B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7914725A GB2307808B (en) 1979-04-27 1979-04-27 Surveillance apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7914725A GB2307808B (en) 1979-04-27 1979-04-27 Surveillance apparatus

Publications (3)

Publication Number Publication Date
GB7914725D0 GB7914725D0 (en) 1997-04-09
GB2307808A GB2307808A (en) 1997-06-04
GB2307808B true GB2307808B (en) 1998-01-07

Family

ID=10504818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914725A Expired - Lifetime GB2307808B (en) 1979-04-27 1979-04-27 Surveillance apparatus

Country Status (1)

Country Link
GB (1) GB2307808B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ122099A0 (en) * 1999-06-25 1999-07-22 Fendis, Gregory Monitoring system
FR2883381B1 (en) * 2005-03-21 2007-06-01 Giat Ind Sa METHOD FOR IMPROVING THE DETECTION OF AN OBJECT

Also Published As

Publication number Publication date
GB2307808A (en) 1997-06-04
GB7914725D0 (en) 1997-04-09

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Legal Events

Date Code Title Description
730A Proceeding under section 30 patents act 1977
PE20 Patent expired after termination of 20 years

Effective date: 19990426