EP0356734A2 - Dispositif détecteur d'intrusion à caméras vidéo - Google Patents

Dispositif détecteur d'intrusion à caméras vidéo Download PDF

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Publication number
EP0356734A2
EP0356734A2 EP89114119A EP89114119A EP0356734A2 EP 0356734 A2 EP0356734 A2 EP 0356734A2 EP 89114119 A EP89114119 A EP 89114119A EP 89114119 A EP89114119 A EP 89114119A EP 0356734 A2 EP0356734 A2 EP 0356734A2
Authority
EP
European Patent Office
Prior art keywords
cameras
television
camera
distance
television cameras
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.)
Ceased
Application number
EP89114119A
Other languages
German (de)
English (en)
Other versions
EP0356734A3 (fr
Inventor
Peter Dr. Kupec
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0356734A2 publication Critical patent/EP0356734A2/fr
Publication of EP0356734A3 publication Critical patent/EP0356734A3/fr
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/19652—Systems using zones in a single scene defined for different treatment, e.g. outer zone gives pre-alarm, inner zone gives alarm

Definitions

  • the invention relates to a burglar alarm system for perimeter protection with television cameras and automatic image evaluation, wherein changes in contrast caused by moving objects are detected, evaluated and used for alarms within a certain surveillance area.
  • a common area section or a common observation volume is monitored simultaneously with at least two television cameras, that at least two television pictures belonging together are evaluated together, that the television cameras are arranged in a certain distance from each other, but a large distance from a conventional stereo arrangement, and form a common distance line, that the observation volume is in the field of view of at least two cameras when viewed from different directions, and that on the basis of the predetermined positions of the cameras, ie certain camera distance and given solid angles ( ⁇ 1, ⁇ 2, ⁇ 1, ⁇ 2) of the respective camera, and taking into account the lens focal length, the actual location, the true size and the shape are calculated or the outer contour of the object is determined and an alarm criterion is derived from this.
  • the area to be monitored is observed by at least two cameras simultaneously and both images are evaluated together.
  • a moving object produces a change in contrast at an angle in space that can be determined with respect to the central axis of the image in question. Since the distance between the two television cameras and the respective solid angles are known, the location of the object can be calculated using the known triangulation.
  • the solid angles of a camera can be given by an "elevation angle” (angle of inclination), which can be determined by the lens axis relative to the horizontal or the distance line, and an “azimuth angle” (horizontal angle).
  • the "azimuth angle” can be formed by the lens axis and the distance line or the vertical plane of the distance line.
  • the Solid angles of the cameras or the reference values for object determination can also be derived from a reference plane, the reference plane being formed by the distance line and a reference point which is determined by a common intersection of a respective camera line of sight in the field of view of the two cameras.
  • the true size and shape (outer outline) of a moving object are determined in addition to the location of the object.
  • the respective view of a camera and the evaluation of both images can now clearly determine whether the moving object is a human being, a crow or a fly.
  • the location, the size and the shape (the outer outline) of the object are classified and stored as typical object data, the currently determined object data being compared with the stored object data and from this comparison an alarm is derived.
  • the intrusion detection system it is advantageous to carry out the individual object data in a predetermined sequence in order to determine the location, size and external shape.
  • This has the advantage, for example, that an object that triggers a change in contrast can have a location that lies outside the monitoring area, so that further determinations and comparisons are no longer necessary.
  • An object discovered in the right place can also act as an intruder be excluded if, based on the joint evaluation of the respective view, a shape or an outer outline has been determined which, for example, corresponds to a crow and not to a crawling person.
  • a clear alarm message can be issued. False alarm messages are largely excluded.
  • a television camera with a telephoto lens can be almost horizontal, i.e. be arranged with an angle of inclination of almost 0 °, while the second camera with an extreme wide-angle lens above the terrain section to be monitored is vertical, i.e. is arranged with an inclination angle of about 90 °.
  • the camera K1 is arranged at the same height as the camera K2 at a distance d.
  • the respective objective axes A1 and A2 of the cameras K1, K2 have an elevation angle (inclination angle) ⁇ 1 and ⁇ 2 with respect to the distance line AL, which corresponds to the horizontal in this exemplary embodiment.
  • the object OB is arranged below the camera K1, so that it appears very large for the camera K1, but very small for the camera K2.
  • the two cameras K1 and K2 face each other at a distance d.
  • the objective axes A1 and A2 of the two cameras K1 and K2 are oriented differently and each have a specific azimuth angle ⁇ 1 and ⁇ 2 with respect to the distance line AL. Due to the camera positions, i.e. the distance d and the solid angles ⁇ 1, ⁇ 2, ⁇ 1 and ⁇ 2, the respective locations, sizes and external shapes of an object can be determined from the respective views of the cameras, evaluated and used for alarms.
  • An arrangement of the two television cameras close to one another, for example at a distance from the human pair of eyes, and with the same line of sight, that is to say a stereo arrangement as is known, for example, for the generation of three-dimensional television images, is not expedient for an intrusion detection system.
  • the effort to achieve a high resolution - and thus recognition of the object based on a view - and a sufficiently precise determination of the spatial coordinates for the object is currently considerable. It is not possible to determine the shape or the outer outline of an object with this stereo arrangement, as already explained above.
  • a certain area to be monitored can be better illuminated with an asymmetrical arrangement of two cameras with different solid angles.
  • FIG. 3 shows an arrangement for an intruder alarm system according to the invention for monitoring an elongated section of the route.
  • the camera K1 with a telephoto lens is arranged approximately horizontally, i.e. with only a small inclination angle ⁇ 1 (elevation angle).

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Studio Devices (AREA)
  • Image Analysis (AREA)
EP89114119A 1988-08-02 1989-07-31 Dispositif détecteur d'intrusion à caméras vidéo Ceased EP0356734A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826264 1988-08-02
DE3826264 1988-08-02

Publications (2)

Publication Number Publication Date
EP0356734A2 true EP0356734A2 (fr) 1990-03-07
EP0356734A3 EP0356734A3 (fr) 1990-03-14

Family

ID=6360103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114119A Ceased EP0356734A3 (fr) 1988-08-02 1989-07-31 Dispositif détecteur d'intrusion à caméras vidéo

Country Status (1)

Country Link
EP (1) EP0356734A3 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306719A1 (en) * 1993-03-04 1993-09-16 Kloch Heilmann Hermann Self=learning alarm system for object monitoring - contains filtered image sensor and ultrasonic sensor used in combination
EP0621572A1 (fr) * 1993-04-20 1994-10-26 Gatsometer B.V. Méthode et dispositif pour l'enregistrement électronique d'un incident par exemple une infraction au code de la route
GB2292628A (en) * 1994-08-24 1996-02-28 Roke Manor Research Object detection system
DE19700811A1 (de) * 1997-01-13 1998-07-16 Heinrich Landert Verfahren und Vorrichtung zur Ansteuerung von Türanlage in Abhängigkeit von der Anwesenheit von Personen
WO1998040855A1 (fr) * 1997-03-10 1998-09-17 Robert Bosch Gmbh Systeme de surveillance video d'une surface
EP1061487A1 (fr) * 1999-06-17 2000-12-20 Istituto Trentino Di Cultura Méthode et dispositif de contrôle automatique d'une région de l'espace
GB2352859A (en) * 1999-07-31 2001-02-07 Ibm Automatic zone monitoring using two or more cameras
DE19956266A1 (de) * 1999-11-23 2001-06-21 Schuetz Dich Entwicklungs & Ve Überwachungsanlage
WO2003042946A1 (fr) * 2001-11-13 2003-05-22 Koninklijke Philips Electronics N.V. Appareil et procede bases sur la vision pour l'activation automatique d'une caracteristique de securite enfant
EP1709664A4 (fr) * 2003-12-31 2008-05-21 Larry C Hardin Systeme pour detecter une intrusion
CN102169614A (zh) * 2011-01-14 2011-08-31 云南电力试验研究院(集团)有限公司 一种基于图像识别的电力作业安全监护方法
DE19744694B4 (de) * 1997-10-10 2013-01-03 Robert Bosch Gmbh Videobewegungsmeldeeinrichtung
CN112325793A (zh) * 2020-09-30 2021-02-05 张成林 防伪检测方法、装置及多目相机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743768A (en) * 1971-04-02 1973-07-03 Halliburton Co Method and apparatus for electronically monitoring a field of view
US3811010A (en) * 1972-08-16 1974-05-14 Us Navy Intrusion detection apparatus
US3988533A (en) * 1974-09-30 1976-10-26 Video Tek, Inc. Video-type universal motion and intrusion detection system
FR2418505A1 (fr) * 1978-02-27 1979-09-21 Labo Electronique Physique Systeme de surveillance d'emplacements

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306719A1 (en) * 1993-03-04 1993-09-16 Kloch Heilmann Hermann Self=learning alarm system for object monitoring - contains filtered image sensor and ultrasonic sensor used in combination
EP0621572A1 (fr) * 1993-04-20 1994-10-26 Gatsometer B.V. Méthode et dispositif pour l'enregistrement électronique d'un incident par exemple une infraction au code de la route
NL9300671A (nl) * 1993-04-20 1994-11-16 Gatsometer Bv Werkwijze en inrichting voor het elektronisch vastleggen van een gebeurtenis, bijvoorbeeld een verkeersovertreding.
GB2292628A (en) * 1994-08-24 1996-02-28 Roke Manor Research Object detection system
GB2292628B (en) * 1994-08-24 1998-03-04 Roke Manor Research Improvements in or relating to detection system
EP0853299B1 (fr) * 1997-01-13 2002-07-31 Heinrich Landert Procédé et dispositif de commande d'un aménagement pour porte en réponse à la présence des personnes
DE19700811A1 (de) * 1997-01-13 1998-07-16 Heinrich Landert Verfahren und Vorrichtung zur Ansteuerung von Türanlage in Abhängigkeit von der Anwesenheit von Personen
US6496220B2 (en) 1997-01-13 2002-12-17 Heinrich Landert Method and arrangement for driving door installations as a function of the presence of persons
WO1998040855A1 (fr) * 1997-03-10 1998-09-17 Robert Bosch Gmbh Systeme de surveillance video d'une surface
DE19744694B4 (de) * 1997-10-10 2013-01-03 Robert Bosch Gmbh Videobewegungsmeldeeinrichtung
EP1061487A1 (fr) * 1999-06-17 2000-12-20 Istituto Trentino Di Cultura Méthode et dispositif de contrôle automatique d'une région de l'espace
US6816186B2 (en) 1999-07-31 2004-11-09 International Business Machines Corporation Automatic zone monitoring
GB2352859A (en) * 1999-07-31 2001-02-07 Ibm Automatic zone monitoring using two or more cameras
DE19956266A1 (de) * 1999-11-23 2001-06-21 Schuetz Dich Entwicklungs & Ve Überwachungsanlage
WO2003042946A1 (fr) * 2001-11-13 2003-05-22 Koninklijke Philips Electronics N.V. Appareil et procede bases sur la vision pour l'activation automatique d'une caracteristique de securite enfant
US6720880B2 (en) 2001-11-13 2004-04-13 Koninklijke Philips Electronics N.V. Vision-based method and apparatus for automatically activating a child safety feature
EP1709664A4 (fr) * 2003-12-31 2008-05-21 Larry C Hardin Systeme pour detecter une intrusion
CN102169614A (zh) * 2011-01-14 2011-08-31 云南电力试验研究院(集团)有限公司 一种基于图像识别的电力作业安全监护方法
CN102169614B (zh) * 2011-01-14 2013-02-13 云南电力试验研究院(集团)有限公司 一种基于图像识别的电力作业安全监护方法
CN112325793A (zh) * 2020-09-30 2021-02-05 张成林 防伪检测方法、装置及多目相机

Also Published As

Publication number Publication date
EP0356734A3 (fr) 1990-03-14

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