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EP0805426A2 - Système de surveillance et procédé de fonctionnement - Google Patents

Système de surveillance et procédé de fonctionnement Download PDF

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Publication number
EP0805426A2
EP0805426A2 EP97303080A EP97303080A EP0805426A2 EP 0805426 A2 EP0805426 A2 EP 0805426A2 EP 97303080 A EP97303080 A EP 97303080A EP 97303080 A EP97303080 A EP 97303080A EP 0805426 A2 EP0805426 A2 EP 0805426A2
Authority
EP
European Patent Office
Prior art keywords
images
image
reference image
surveillance
image data
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Withdrawn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
EP97303080A
Other languages
German (de)
English (en)
Other versions
EP0805426A3 (fr
Inventor
Simon Kelly
Gordon Truefitt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0805426A2 publication Critical patent/EP0805426A2/fr
Publication of EP0805426A3 publication Critical patent/EP0805426A3/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Withdrawn legal-status Critical Current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
    • G08B13/18—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
    • G08B13/19684—Portable terminal, e.g. mobile phone, used for viewing video remotely
    • 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
    • G08B13/19604—Image analysis to detect motion of the intruder, e.g. by frame subtraction involving reference image or background adaptation with time to compensate for changing conditions, e.g. reference image update on detection of light level change
    • 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
    • G08B13/19654—Details concerning communication with a camera
    • G08B13/19658—Telephone systems used to communicate with a camera, e.g. PSTN, GSM, POTS

Definitions

  • This invention relates to a surveillance system and method of operation thereof, and in particular to a system in which data relating to trespass on a monitored zone is transmitted to a remote location.
  • the security and surveillance industry is one which is in the process of rapid growth. This is due partly to a general feeling of insecurity on behalf of members of the public and owners of commercial sites coupled with improved technology. Consequently both private homes and commercial locations are being fitted with surveillance systems including close circuit television or burglar alarms.
  • the burglar alarms tend to include an audio or visual alarm device located on the premises and/or a communication link to a remote location.
  • GB 2260880A addresses the problem in relation to personal alarm systems and includes a camera and a transmitter.
  • the camera when activated either by a loud noise or by manual activation captures a photograph of an intruder and transmits that photograph to a remote location. This results in a deterrent effect, as evidence of the intrusion is sent to a remote site, be it a police station or other site. On this action an alarm can also be raised.
  • this prior art system has a substantial problem in that the amount of data required to be sent to transmit a full image including superfluous background is significant. This can lead to a relatively long period of time being taken up in the transmission. Also a significant bandwidth is required for such a transmission system.
  • a surveillance system comprising at least one remote device and a surveillance device including camera means adapted to produce a series of images of a static zone to be monitored, an image processor including comparison means arranged to compare each of said images with a previously produced reference image, in order to detect any difference therebetween, said image processor being further arranged to select any portion of any of said images which differs from said reference image, and communication means arranged to transmit image data characteristic of said portion or portions to said at least one remote device, the surveillance system operating under the control of a control means.
  • a surveillance means for use in the system as described above.
  • a remote device for use in the system as described above.
  • a method of surveillance of a static zone including producing a series of images of the zone, comparing each of said images with a reference image in order to detect a difference therebetween, selecting any portion of any of said images which differs from said reference image and transmitting image data characteristic of said portion or portions to at least one remote device arranged to receive said image data.
  • the Figure illustrates a block diagram of a surveillance system comprising a plurality of remote devices 2 in the form of GSM compatible mobile telephones each of which is fitted with a visual display.
  • Other telephones such as land line telephones and other display means such as facsimile means may be utilised in alternate embodiments of the present invention.
  • the surveillance system also includes a surveillance device 4 including camera means 6 in the form of a CCD camera. Such camera typically would cover a field of view of 60°, equalling approximately an area of 4.6X3.5m at a range of 4m. Resolution of 320X240 pixels with a fixed focus of 200mm to infinity is provided.
  • Other video cameras such as infra-red cameras may be utilised in an alternate embodiment of the present invention.
  • the system also includes an image processor 8 including a comparison means 10 arranged to compare each of the images with the previously produced reference image.
  • the reference image is normally produced after the production of every thirty images of the zone. Each of the images of the zone is compared, in the comparator 10, to the reference image and any difference therebetween is detected.
  • the image processor 8 is adapted to select any portion of any of said images which differs from the reference image.
  • Communication means 12 are arranged to transmit the image data characteristic of the portion or portions which differ from the reference image to at least one of said remote devices 2.
  • the system is arranged such that the remote devices are ranked in order of importance. If the system fails to make contact with the first device a subsequent device 2 is contacted. If the system fails to contact any of the devices a taped message to this effect is transmitted by the communication means 12 to a further remote site such as a local police station.
  • the system initiates an alarm sequence which initiates a pre-programmed call via either a terrestrial telephone or GSM mobile phone equipped with a modem and data board to a suitable mobile phone.
  • the mobile phone is also equipped with a modem data board and small display screen.
  • the data sent to the mobile unit upon answering includes, as stated above, only the data relating to the difference between the reference and detected images.
  • a means in the mobile unit receives checks and puts the data in order and converts it to a video with sync signal under the control of a local processor. Each image in turn may be selected for viewing, controlled by bi-directional modem link with a viewer's control buttons and data block acknowledgement.
  • the viewer may initiate suitable responses to the alarm by means of the mobile telephone incorporated in the system. This may include calling the police or initiating an alarm.
  • the degree of difference between the image and reference may be increased or decreased and the number of images taken prior to up dating the reference image may be increased or decreased.
  • the surveillance system comprises two units - a fixed monitor and a mobile display means.
  • the fixed monitor has a camera, processor board, GSM phone or transmitter with modem, terrestrial phone connection with a modem and a power supply.
  • the mobile display unit has a GSM phone with modem, processor board, local display, control buttons and a power source.
  • Processing board and associated elements Transmission time 2 seconds for a 2% change of view LCD display and keypad for number and parameter setting, controls and reference frame control/store.
  • Alarm state detection - change of more than 2% of the picture (adjustable)
  • Audible message store - integral microphone.
  • Recording controls on LCD panel Local alarm relay - controlled from mobile Power supply - universal mains supply with battery backup for camera, processor, GSM phone and both modems
  • first unit Box for electronics integral GSM phone or transmitter & modem, short cable to camera, cable to standard phone plug, terminals for alarm relay, and mains inlet
  • GSM phone with modem Display miniature television type control buttons to download new or modified pictures and to operate alarm relay Power supply - local mains charge and battery
  • Selective vertical resolution in field of viewer giving a horizontal band of high resolution. This might be set on site or selectable by the viewer to send improved resolution with a specific horizontal band, e.g. where an intruder's head might be.
  • Approved persons in view - inhibits call sequence to others. Audio trigger - confirming video detect.
  • Vivitar MPP2 is made by Vision (Edinburgh).
  • the lighting is best arranged to give the greatest contrast between the static and moving images. This can be determined with some simple experiments once the motion software is running and details ultimately include in operating specification/instructions.
  • Connectix also make a colour camera with built in video data compression. This reduces by a factor of 16 the data to be sent whilst still maintaining picture quality. Use of this has been investigated, since it looks as if it could make transmission onward to the mobile rather easy. This might be the case if the entire picture was to be sent on and there was no motion detection to do.
  • carry out analysis and then only to be able to send a complete picture will not achieve the aim of getting a view of just the intruder to the viewer.
  • To send part of the picture would need data decompression, selection and recompression, implying a knowledge of the compression technique.
  • JPEG compression is rather good in that picture data can be transmitted at a selectable degrees of compression. For example send an initial view at maximum compression and minimum transmit time. After viewer assessment this could be repeated but more slowly and with greater resolution.
  • figures for JPEG are, source data 64000 bits [a little less than one picture from 320X240 camera], compressed 5094 bits.
  • Both processor boards will have to include a PCMIA connection point, avoiding the cost of two Card Host Pro units.
  • the modems are assigned a different number to their voice channel.
  • Digital video and single image transmission can be quite specific in that the data for each pixel represents its brightness and that the information is sent one pixel at a time starting from the first and automatically starting a new line - unlike TV pictures which contain line and frame sync pluses.
  • This means that the picture data is a continuous stream of bits, for 320X240 at 64 grey shades it is 460800 bits.
  • a usable scheme is to send the data in blocks with a checksum. If not received correctly then the mobile asks for a resend. Taken a little further it is intended to add additional data so that the blocks can be sent and received in any order and realigned prior to writing out to the display. Ideal block size has yet to be determined, smaller blocks increase sending time with an error free channel but reduce overall time if any blocks need re-sending.
  • the modem link between the two stations may be bi-directional.
  • the return data is for the viewers control buttons and data block acknowledgement. Reception of and reaction to this data is straight-forward at the transmitting end. In a later development data might be interchanged between stations for security purposes.
  • Picture data, once received, checked and put in order is converted to a video with sync signal, this all being under control of a local processor. If compression is found to be necessary it would significantly affect choice of processor and associated components and have some bearing on the power consumption.
  • a miniature television may be used for the display, modified to receive the video signals, .
  • the display technology can be integrated with the processing board to optimize size and power consumption.
  • a computer type 1/4VGALCD This has the same resolution as the camera but each pixel is either on or off, no grey scale. If the pictures are adequate to determine the presence of an intruder then its use would reduce the amount of picture data to be sent, and hence the transmission time.
  • the display considered was 130X93mm with a viewing area 104X75mm.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Burglar Alarm Systems (AREA)
EP97303080A 1996-05-03 1997-05-06 Système de surveillance et procédé de fonctionnement Withdrawn EP0805426A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9609406.5A GB9609406D0 (en) 1996-05-03 1996-05-03 The "Pixxi" televisual surveillance alarm system
GB9609406 1996-05-03

Publications (2)

Publication Number Publication Date
EP0805426A2 true EP0805426A2 (fr) 1997-11-05
EP0805426A3 EP0805426A3 (fr) 1999-04-14

Family

ID=10793228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97303080A Withdrawn EP0805426A3 (fr) 1996-05-03 1997-05-06 Système de surveillance et procédé de fonctionnement

Country Status (2)

Country Link
EP (1) EP0805426A3 (fr)
GB (1) GB9609406D0 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999065005A3 (fr) * 1998-06-08 2000-03-30 Leiv Eiriksson Nyfotek As Procede et systeme de surveillance d'une zone
WO2001048719A1 (fr) * 1999-12-23 2001-07-05 Wespot Ab Technique, systeme et module de surveillance
NL1014735C2 (nl) * 2000-03-23 2001-09-25 Lbl Trading Cv Alarmeringswerkwijze en -inrichting.
FR2810775A1 (fr) * 2000-06-27 2001-12-28 De Verneuil Francois Huard Procede permettant de detecter une presence dans une enceinte protegee
WO2004054223A1 (fr) * 2002-12-12 2004-06-24 Patria Ailon Oy Agencement de detection de mouvement dans une station mobile
FR2904744A1 (fr) * 2006-08-07 2008-02-08 Gint Soc Par Actions Simplifie Procede de videosurveillance d'une pluralite de zones par une unique camera
FR2904743A1 (fr) * 2006-08-07 2008-02-08 Gint Soc Par Actions Simplifie Systeme de videosurveillance a distance dote de moyens d'alarme et procede associe
EP1446784A4 (fr) * 2001-11-21 2009-01-07 Iomniscient Pty Ltd Detection d'immobilite
US7479980B2 (en) 1999-12-23 2009-01-20 Wespot Technologies Ab Monitoring system
EP1704545A4 (fr) * 2003-08-07 2009-05-27 Red Wolf Technologies Inc Dispositif, syst me et proc d de s curit am lior s
WO2011063527A1 (fr) * 2009-11-27 2011-06-03 Sentry Technology Corporation Système de gestion d'entreprise et procédé d'audit employé par le système
US8319833B2 (en) 2009-06-23 2012-11-27 Sentrus, Inc. Video surveillance system
CN103871186A (zh) * 2012-12-17 2014-06-18 博立码杰通讯(深圳)有限公司 安防监控系统及相应的报警触发方法
CN105334543A (zh) * 2014-05-26 2016-02-17 北京维森科技有限公司 基于红外触发图像比对的人体存在检测方法和装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU179193B (en) * 1979-04-17 1982-09-28 Hiradastechnika Szoevetkezet Method and arrangement for digitizing,storing,comparising and evaulating tv pictures
EP0028933A3 (fr) * 1979-11-09 1981-06-03 Ascotts Ltd. Système de surveillance
CH651984A5 (en) * 1983-03-14 1985-10-15 Alain Ducrot Telecommunication installation allowing video and audio observation of events unfolding at a distance
DE3789771D1 (de) * 1986-11-25 1994-06-09 Zone Technology Pty Ltd Digitales bilderfassungssystem.
US4963961A (en) * 1989-06-16 1990-10-16 Burle Technologies, Inc. Vertical motion detector
WO1991007850A1 (fr) * 1989-11-09 1991-05-30 Zone Technology Pty Limited Camera video numerique
US5144661A (en) * 1991-02-11 1992-09-01 Robert Shamosh Security protection system and method
JPH0564199A (ja) * 1991-08-29 1993-03-12 Pioneer Electron Corp 画像監視装置
DE19512959A1 (de) * 1995-04-10 1996-10-17 Sel Alcatel Ag Fernüberwachungsvorrichtung
JPH099366A (ja) * 1995-06-23 1997-01-10 Kokusai Electric Co Ltd 移動型無線監視システム

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999065005A3 (fr) * 1998-06-08 2000-03-30 Leiv Eiriksson Nyfotek As Procede et systeme de surveillance d'une zone
US7479980B2 (en) 1999-12-23 2009-01-20 Wespot Technologies Ab Monitoring system
WO2001048719A1 (fr) * 1999-12-23 2001-07-05 Wespot Ab Technique, systeme et module de surveillance
NL1014735C2 (nl) * 2000-03-23 2001-09-25 Lbl Trading Cv Alarmeringswerkwijze en -inrichting.
WO2001073714A1 (fr) * 2000-03-23 2001-10-04 Lbl Trading Cv Procede et dispositif d'alarme
US7054415B2 (en) 2000-03-23 2006-05-30 Marchfun International N.V. Alarm method and device
FR2810775A1 (fr) * 2000-06-27 2001-12-28 De Verneuil Francois Huard Procede permettant de detecter une presence dans une enceinte protegee
US7688997B2 (en) 2001-11-21 2010-03-30 Iomniscient Pty Ltd Non-motion detection
EP1446784A4 (fr) * 2001-11-21 2009-01-07 Iomniscient Pty Ltd Detection d'immobilite
WO2004054223A1 (fr) * 2002-12-12 2004-06-24 Patria Ailon Oy Agencement de detection de mouvement dans une station mobile
EP1704545A4 (fr) * 2003-08-07 2009-05-27 Red Wolf Technologies Inc Dispositif, syst me et proc d de s curit am lior s
FR2904743A1 (fr) * 2006-08-07 2008-02-08 Gint Soc Par Actions Simplifie Systeme de videosurveillance a distance dote de moyens d'alarme et procede associe
FR2904744A1 (fr) * 2006-08-07 2008-02-08 Gint Soc Par Actions Simplifie Procede de videosurveillance d'une pluralite de zones par une unique camera
US8319833B2 (en) 2009-06-23 2012-11-27 Sentrus, Inc. Video surveillance system
WO2011063527A1 (fr) * 2009-11-27 2011-06-03 Sentry Technology Corporation Système de gestion d'entreprise et procédé d'audit employé par le système
CN103871186A (zh) * 2012-12-17 2014-06-18 博立码杰通讯(深圳)有限公司 安防监控系统及相应的报警触发方法
CN105334543A (zh) * 2014-05-26 2016-02-17 北京维森科技有限公司 基于红外触发图像比对的人体存在检测方法和装置

Also Published As

Publication number Publication date
GB9609406D0 (en) 1996-07-10
EP0805426A3 (fr) 1999-04-14

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