EP2276007A1 - Procédé et système de protection à distance d'une zone au moyen de caméras et de microphones - Google Patents

Procédé et système de protection à distance d'une zone au moyen de caméras et de microphones Download PDF

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Publication number
EP2276007A1
EP2276007A1 EP09165782A EP09165782A EP2276007A1 EP 2276007 A1 EP2276007 A1 EP 2276007A1 EP 09165782 A EP09165782 A EP 09165782A EP 09165782 A EP09165782 A EP 09165782A EP 2276007 A1 EP2276007 A1 EP 2276007A1
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EP
European Patent Office
Prior art keywords
sound
representation
location
area
sound source
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.)
Withdrawn
Application number
EP09165782A
Other languages
German (de)
English (en)
Inventor
Frank Leonard Kooi
Kim Kranenborg
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Priority to EP09165782A priority Critical patent/EP2276007A1/fr
Priority to EP10736847A priority patent/EP2454725A1/fr
Priority to PCT/NL2010/050466 priority patent/WO2011008099A1/fr
Publication of EP2276007A1 publication Critical patent/EP2276007A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
    • 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
    • G08B13/19678—User interface
    • G08B13/19686—Interfaces masking personal details for privacy, e.g. blurring faces, vehicle license plates
    • 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
    • G08B13/19678—User interface
    • G08B13/19691—Signalling events for better perception by user, e.g. indicating alarms by making display brighter, adding text, creating a sound
    • G08B13/19693—Signalling events for better perception by user, e.g. indicating alarms by making display brighter, adding text, creating a sound using multiple video sources viewed on a single or compound screen
    • 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
    • G08B13/19697—Arrangements wherein non-video detectors generate an alarm themselves

Definitions

  • the present invention refers to a method and system for remotely guarding an area by means of cameras and microphones at several locations within that area, which are connected to a central surveillance post.
  • another aim of the invention is to provide a method and system in which audible information is used, however, without infringing the privacy regulations.
  • Still another aim of the invention is to provide a system which makes remote monitoring of (urban) areas more lively for the operator (e.g. guardsman), as the visual information offered by the video cameras is supplemented by accompanying "real live audio", however without passing on (private) conversations etc. in a way that their content could be followed, i.e. understood, by the operator.
  • Yet another aim is to provide that the operator can semantically comprehend the emotional components (in particular fear, anger, excitement etc.) in the audible signals picked up in the vicinity of the cameras. These components should, after transfer to the operator, attract his attention in a natural way and trigger him/her to pay attention to the location at which such (e.g. excited) audible signal originated or was recorded.
  • emotional components in particular fear, anger, excitement etc.
  • the representation is processed such that eavesdropping is prevented, e.g. by time and/or frequency domain filtering and/or scrambling, such as fragmenting the sound representation, causing that the sound representation supplied to the operator includes fragmented parts -e.g. having maximum lengths of for example 10 seconds- of the sound picked up by the sound source, causing that the overall semantic or linguistic intelligibility of the sound is reduced to a level which complies with the relevant privacy regulations related to eavesdropping.
  • time and/or frequency domain filtering and/or scrambling such as fragmenting the sound representation
  • the sound representation includes at least part of the sound picked up by the relevant sound source, however, processed such that the intelligibility of the sound is reduced to a level which complies with the relevant privacy regulations related to eavesdropping, e.g. wherein the Speech Transmission Index (abbreviated STI, see for its definition e.g. en.wikipedia.org/wiki/Speech_Transmission_Index) of the processed sound is reduced, e.g. by means of signal scrambling or addition of noise), to a maximum of e.g. or less 0.35.
  • STI Speech Transmission Index
  • the location representation of that sound may preferably be performed by spatial (2 or 3 Dimensional) audible reproduction of that sound representation in the vicinity of the observation screen.
  • observation screen which may be formed by a group of cooperating display screens
  • the operator's attention can be attracted when the sound representations, originated at several microphone locations, are reproduced (i.e. when the attention value of the sound passes a predetermined threshold value) via a spatial audio reproduction system.
  • the sounds as such may be picked up by single channel microphones, however their sound representations are reproduced, via a spatial audio system in the vicinity of the observation screen, in such a way that, in the operator's perception, the sound representations comes from the direction of the location, as mapped on the observation screen, where the sound has been produced or recorded.
  • the sound originating location may be represented by means of visual display of the location where the sound has been produced, e.g. by means of any form of highlighting that location at the area mapping on the observation screen.
  • Figures 1 and 2 show a system for remotely guarding an area (the centre of Utrecht) using cameras and microphones at several locations within that area, which are connected to a central surveillance post, including an observation screen 1 arranged for displaying the various camera (Cam) and microphone (Mic) locations on a map of the area.
  • the system includes means for executing the method as discussed hereinbefore including processing means and means for the reproduction of the sound representations, i.e. an event detector (ED) 2 and an intelligibility reductor (IR) 3, as well as means for the reproduction of the relevant location representations, i.e. a 2D renderer (2DR) 4 and a set of loudspeakers 5 for acoustic location representation, as well as a video screen driver (VD) 6 for visual location representation at the observation screen 1.
  • processing means and means for the reproduction of the sound representations i.e. an event detector (ED) 2 and an intelligibility reductor (IR) 3, as well as means for the reproduction of the relevant location representations
  • the relevant area thus can be monitored by means of cameras 7 and microphones 8 at several locations within the area, which are connected to a central surveillance post which accommodates the components shown in the figures 1 and 2 .
  • a screen observing operator 9 is able, e.g. by means of a keyboard, mouse, joystick (not shown) or touch screen, to select and activate cameras and/or camera images to zoom in and out; besides the operator may be able to move the cameras into different positions.
  • the attention value is derived based on the sound picked up by that sound source.
  • the event detector 2 analyzes the incoming sound and decides -e.g. based on the results of a frequency spectrum and energy level analysis- whether the incoming sound comprises elements like fear, excitement (e.g. screaming), uncommon noise like e.g. breaking glass etc. In such cases the attention value should pass a predetermined threshold value, indicating that there might be an event which should be investigated.
  • this detector gives an "on" signal to the intelligibility reductor 3 to pass a representation of the sound picked up by the sound source causing the threshold passage, i.e. a sound representation having a reduced intelligibility.
  • an audible representation of the location of the possibly buffered sample of the event sound source causing the threshold passage is performed, viz.
  • the operator may have heard (the sound representation of) breaking glass and/or crying voices "Stop thief!!", is guided by that sound to the highlighted location at his screen 1, activates the relevant camera and see at the auxiliary screen 10 a thief running away. The operator then may contact and inform the police.
  • this may include to make separated fragmented parts of the sound picked up by the sound source (the microphone(s)), which fragmentation is such that the overall semantic intelligibility of the sound is reduced to a level which complies with the relevant privacy regulations related to eavesdropping.
  • the length of each fragmented part is limited (e.g. to 10 seconds or less), the intelligibility will be decreased and thus the possibility to relate a spoken phrase to a particular individual will be made infeasible.
  • Another or an additional method for intelligibility reduction is to process (e.g. by scrambling and/or distortion) the sound from the originating sound source such that the intelligibility of the sound is reduced to a level which complies with the relevant privacy regulations related to eavesdropping.
  • process e.g. by scrambling and/or distortion
  • the Speech Transmission Index of the processed sound has a maximum of 0.35, this will fit to the desired lower intelligibility.
  • the Speech Transmission Index is a measure for the intelligibility (understanding) of speech, whose value varies from 0 (completely unintelligible) to 1 (perfect intelligibility). On this scale, an STI of at least 0.5 is desirable for most applications ( Steeneken, H. J. M., & Houtgast, T. (1980). A physical method for measuring speech-transmission quality. Journal of the Acoustical Society of America, 67, 318-326 )

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)
EP09165782A 2009-07-17 2009-07-17 Procédé et système de protection à distance d'une zone au moyen de caméras et de microphones Withdrawn EP2276007A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09165782A EP2276007A1 (fr) 2009-07-17 2009-07-17 Procédé et système de protection à distance d'une zone au moyen de caméras et de microphones
EP10736847A EP2454725A1 (fr) 2009-07-17 2010-07-19 Procédé et système de gardiennage à distance d'une zone au moyen de caméras et de microphones
PCT/NL2010/050466 WO2011008099A1 (fr) 2009-07-17 2010-07-19 Procédé et système de gardiennage à distance d'une zone au moyen de caméras et de microphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09165782A EP2276007A1 (fr) 2009-07-17 2009-07-17 Procédé et système de protection à distance d'une zone au moyen de caméras et de microphones

Publications (1)

Publication Number Publication Date
EP2276007A1 true EP2276007A1 (fr) 2011-01-19

Family

ID=41110692

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09165782A Withdrawn EP2276007A1 (fr) 2009-07-17 2009-07-17 Procédé et système de protection à distance d'une zone au moyen de caméras et de microphones
EP10736847A Withdrawn EP2454725A1 (fr) 2009-07-17 2010-07-19 Procédé et système de gardiennage à distance d'une zone au moyen de caméras et de microphones

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10736847A Withdrawn EP2454725A1 (fr) 2009-07-17 2010-07-19 Procédé et système de gardiennage à distance d'une zone au moyen de caméras et de microphones

Country Status (2)

Country Link
EP (2) EP2276007A1 (fr)
WO (1) WO2011008099A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8167916B2 (en) 2001-03-15 2012-05-01 Stryker Spine Anchoring member with safety ring
WO2014199263A1 (fr) 2013-06-10 2014-12-18 Honeywell International Inc. Cadriciels, dispositifs et procédés configurés pour permettre l'affichage d'informations d'installation et de données de surveillance par l'intermédiaire d'une interface utilisateur basée sur une carte
EP2819108A1 (fr) * 2013-06-24 2014-12-31 Panasonic Corporation Système de commande de directivité et son procédé de commande de sortie
CN107257525A (zh) * 2013-03-28 2017-10-17 三星电子株式会社 便携式终端和在便携式终端中指示声源的位置的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10134422B2 (en) 2015-12-01 2018-11-20 Qualcomm Incorporated Determining audio event based on location information

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GB2408880A (en) * 2003-12-03 2005-06-08 Safehouse Internat Inc Observing monitored image data and highlighting incidents on a timeline
US20050225634A1 (en) * 2004-04-05 2005-10-13 Sam Brunetti Closed circuit TV security system
WO2005120071A2 (fr) * 2004-06-01 2005-12-15 L-3 Communications Corporation Procede et systeme permettant d'effectuer un flash video
US20070182819A1 (en) * 2000-06-14 2007-08-09 E-Watch Inc. Digital Security Multimedia Sensor
WO2007095994A1 (fr) * 2006-02-23 2007-08-30 Robert Bosch Gmbh module audio pour circuit de Surveillance vidéo, circuit de Surveillance vidéo et procédé visant à maintenir sous Surveillance une pluralité d'emplacements

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US4060803A (en) * 1976-02-09 1977-11-29 Audio Alert, Inc. Security alarm system with audio monitoring capability
US5666157A (en) * 1995-01-03 1997-09-09 Arc Incorporated Abnormality detection and surveillance system
US7346186B2 (en) * 2001-01-30 2008-03-18 Nice Systems Ltd Video and audio content analysis system
GB0709329D0 (en) * 2007-05-15 2007-06-20 Ipsotek Ltd Data processing apparatus

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US20070182819A1 (en) * 2000-06-14 2007-08-09 E-Watch Inc. Digital Security Multimedia Sensor
GB2408880A (en) * 2003-12-03 2005-06-08 Safehouse Internat Inc Observing monitored image data and highlighting incidents on a timeline
US20050225634A1 (en) * 2004-04-05 2005-10-13 Sam Brunetti Closed circuit TV security system
WO2005120071A2 (fr) * 2004-06-01 2005-12-15 L-3 Communications Corporation Procede et systeme permettant d'effectuer un flash video
WO2007095994A1 (fr) * 2006-02-23 2007-08-30 Robert Bosch Gmbh module audio pour circuit de Surveillance vidéo, circuit de Surveillance vidéo et procédé visant à maintenir sous Surveillance une pluralité d'emplacements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STEENEKEN, H. J. M.; HOUTGAST, T.: "A physical method for measuring speech-transmission quality", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 67, 1980, pages 318 - 326

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8167916B2 (en) 2001-03-15 2012-05-01 Stryker Spine Anchoring member with safety ring
US8845695B2 (en) 2001-03-15 2014-09-30 Stryker Spine Anchoring member with safety ring
US9532807B2 (en) 2001-03-15 2017-01-03 Stryker European Holdings I, Llc Anchoring member with safety ring
CN107257525A (zh) * 2013-03-28 2017-10-17 三星电子株式会社 便携式终端和在便携式终端中指示声源的位置的方法
WO2014199263A1 (fr) 2013-06-10 2014-12-18 Honeywell International Inc. Cadriciels, dispositifs et procédés configurés pour permettre l'affichage d'informations d'installation et de données de surveillance par l'intermédiaire d'une interface utilisateur basée sur une carte
EP3008529A4 (fr) * 2013-06-10 2017-03-15 Honeywell International Inc. Cadriciels, dispositifs et procédés configurés pour permettre l'affichage d'informations d'installation et de données de surveillance par l'intermédiaire d'une interface utilisateur basée sur une carte
EP2819108A1 (fr) * 2013-06-24 2014-12-31 Panasonic Corporation Système de commande de directivité et son procédé de commande de sortie
US9747454B2 (en) 2013-06-24 2017-08-29 Panasonic Intellectual Property Management Co., Ltd. Directivity control system and sound output control method

Also Published As

Publication number Publication date
EP2454725A1 (fr) 2012-05-23
WO2011008099A1 (fr) 2011-01-20

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