WO2009066988A2 - Device and method for a surveillance system - Google Patents

Device and method for a surveillance system Download PDF

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Publication number
WO2009066988A2
WO2009066988A2 PCT/MY2008/000154 MY2008000154W WO2009066988A2 WO 2009066988 A2 WO2009066988 A2 WO 2009066988A2 MY 2008000154 W MY2008000154 W MY 2008000154W WO 2009066988 A2 WO2009066988 A2 WO 2009066988A2
Authority
WO
WIPO (PCT)
Prior art keywords
camera
view
wide
high resolution
wide view
Prior art date
Application number
PCT/MY2008/000154
Other languages
French (fr)
Other versions
WO2009066988A3 (en
Inventor
Hock Woon Hon
Lye Pin Chu
Sheau Wei Chau
Wooi Hen Yap
Ching Hau Chan
Siu Jing Then
Thillai Raj T. Ramanathan
Original Assignee
Mimos Berhad
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 Mimos Berhad filed Critical Mimos Berhad
Publication of WO2009066988A2 publication Critical patent/WO2009066988A2/en
Publication of WO2009066988A3 publication Critical patent/WO2009066988A3/en

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
    • G08B13/19608—Tracking movement of a target, e.g. by detecting an object predefined as a target, using target direction and or velocity to predict its new position
    • 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
    • G08B13/19643—Multiple cameras having overlapping views on a single scene wherein the cameras play different roles, e.g. different resolution, different camera type, master-slave camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums

Definitions

  • This invention relates to a device and method for monitoring and surveillance and particularly to an apparatus and method employing both wide-angle and narrow-angle imaging optics.
  • the field of surveillance has advanced so rapidly that it is no longer is sufficient to place a stationary camera to capture or to monitor a particular area. It is now essential that the surveillance system is able to capture and continuously monitor the motion of objects and people .
  • pan tilt camera This form of pan tilt camera is also known as PTZ camera.
  • WO 2006/11734 teaches a system that uses multiple stationary cameras to achieve a wide-angle view by means of compiling images from all the cameras in the system to create a 'panoramic view'. Further, the wide-angle view is only available after the multiple images from the cameras are combined and corrected to produce a single wide view.
  • the primary objective of the present invention is to provide a surveillance device and monitoring system and method that provides
  • the present invention includes a surveillance device that houses both the wide-angle view and a zoomed and is used as the means to detect an absence/occurrence of an event.
  • the data obtained from the wide view angle camera is used as the tracking signal input of the zoomed camera.
  • Figure 2 Process flow of the overall device and method of present invention
  • Figure 3 Image processing to detect the position, pan, tilt and zoom factor for the high resolution camera.
  • Figure 1 shows a preferred embodiment of the present invention.
  • the present invention provide an automated surveillance device comprising of a rotary drum and image- capturing device.
  • the image-capturing devices used are a wide coverage view camera and a high-resolution camera.
  • the types of cameras used can be varied from visible light cameras, night vision cameras, thermal cameras or any other suitable cameras
  • the wide view is provided by a 360-degree camera, such as a fish eye lens.
  • the wide coverage view provided by the fish eye lens serves as a guiding system to determine the area of interest i.e. the area where the presence or absence of activities within the area that is being monitored.
  • the detection region pixel is pre-calibrated and the location is encoded in the number of column and row in the image data. Column number depicts the angle from the reference point and the row number would generally indicate the distance from the view.
  • Motion detection is then applied to the wide view finder image processing.
  • the output of the view finder is standard gray scale image.
  • the image is fed to the motion detection processing and the output is used for the tracking purposes.
  • the high-resolution camera is used for tracking and zooming purposes.
  • a PTZ camera may be used as a high-resolution camera.
  • the pan, tilt and zoom of this camera are controlled by the camera's controller, which utilizes the tracking output of the motion detection processing as its control signal.
  • the PTZ camera is controlled in such a way that its motion changes according to the signal received from the fish eye camera.
  • FIG 3 is a flow chart of overall workings of the present invention.
  • the surveillance system initializes both the view finder and zoom lens simultaneously. Video stream from the view finder is continuously captured and digitized into frames. The system then applies motion detection technique to every single digitized frame. The motion detection technique applied can either be calibrated to detect the presence or absence of motion in a frame.
  • moving objects (or an occurrence of an event) in the foreground is extracted and stored in a binary format. This information is then used to determine the co-ordinates of the object (or an occurrence of an event). The size of the event in terms of the number of pixel is then determined.
  • the coordinates and the region of interest is then determined. This is then converted into the signal that is sent to the controller of the high-resolution camera.
  • the controller then adjusts the pan, tilt and zoom of the high-resolution camera according to the detected object (or an occurrence of an event).
  • the zoom factor of the high resolution camera is automatically determined by the tracking signal generated corresponding to the size, in terms of number of pixels/second of the detected region i.e. region of interest.
  • Figure 3 further elaborates how the calibrated distance from the radius (the image obtained is circular) and the size of the area of interest would determine the amount of zoom factor.
  • the rotary drum coupled with a slip ring serves as the main rotational tool to pan a field of view of 360 degrees. This enables the high-resolution camera to be rotated at a speed up to 750 rpm, which enables the camera to provide continuous 360 degree real time images. It further eliminates the need for use of cables in the fast moving part of the rotation interface between camera and rotary drum. This gives the advantage of being able to eliminate the possibility of entangling cables.
  • a ganiometer is used as the means to tilt camera. In this way the angle of the image captured can be as precise as the image that was captured by the fish eye camera. Further , the use of ganiometer enables a smooth transition of the camera with every field of view change. This yields a smooth continuos image.
  • the images that are obtained from the high-resolution camera can be further processed using facial recognition or other pattern recognition software. The image can also be stored and recorded.

Abstract

A device and method for a surveillance system utilizing a wide view camera a serves as guiding system to determine the area of interest i.e. the area where the presence or absence of activities within the area that is being monitored, together with a high resolution camera which is controlled in pan, tilt and zoom which provides a zoomed image of the area of interest.

Description

DEVICE AND METHOD FOR A SURVEILLANCE SYSTEM
Field of Invention
This invention relates to a device and method for monitoring and surveillance and particularly to an apparatus and method employing both wide-angle and narrow-angle imaging optics.
Background of Invention
The field of surveillance has advanced so rapidly that it is no longer is sufficient to place a stationary camera to capture or to monitor a particular area. It is now essential that the surveillance system is able to capture and continuously monitor the motion of objects and people .
The traditional surveillance system used to employ a number of stationary cameras to observe a wide area. However, this system is being or have been replaced with either a wide-angle camera or several pan tilt cameras which are actuated to follow targets over time. A pan tilt camera would commonly have a zoom feature so that the object that is being observed can be zoomed in (this form of pan tilt camera is also known as PTZ camera).
However both PTZ and wide view angle camera have their own limitations e.g. a PTZ system is unsuitable for many real-time applications due to their scanning times, whereas the wide-angle or omnidirectional devices typically provide image resolution that is relatively low as compared to traditional PTZ systems.
Therefore, the need arises for a system that provides both a wide-angle field of view of an area being monitored and with the capability for high-resolution images of regions of interest within the monitored area, as suggested by WO 2006/11734.
WO 2006/11734 teaches a system that uses multiple stationary cameras to achieve a wide-angle view by means of compiling images from all the cameras in the system to create a 'panoramic view'. Further, the wide-angle view is only available after the multiple images from the cameras are combined and corrected to produce a single wide view.
It further teaches the use of a conventional PTZ camera to obtain high-resolution images of the presence or absence of an event captured in the wide view image stated above.
Therefore, there arise a need for an apparatus and system of surveillance which is capable of providing a wide view coverage and also a zoomed real time image.
Summary of Invention
The primary objective of the present invention is to provide a surveillance device and monitoring system and method that provides
a) A wide-angle view of an area being monitored using a single apparatus, wherein the data obtained from the apparatus can be immediately used. b) Magnified images of regions of interest within the monitored area, which is captured synchronously with the view of the wide angle camera.
To overcome the limitations of the prior art, the present invention includes a surveillance device that houses both the wide-angle view and a zoomed and is used as the means to detect an absence/occurrence of an event. The data obtained from the wide view angle camera is used as the tracking signal input of the zoomed camera.
Description of Drawings
Figure 1 Perspective view of present invention
Figure 2 Process flow of the overall device and method of present invention Figure 3 Image processing to detect the position, pan, tilt and zoom factor for the high resolution camera. Detailed Description
Figure 1 shows a preferred embodiment of the present invention. The present invention provide an automated surveillance device comprising of a rotary drum and image- capturing device. The image-capturing devices used are a wide coverage view camera and a high-resolution camera. The types of cameras used can be varied from visible light cameras, night vision cameras, thermal cameras or any other suitable cameras
The wide view is provided by a 360-degree camera, such as a fish eye lens.. The wide coverage view provided by the fish eye lens serves as a guiding system to determine the area of interest i.e. the area where the presence or absence of activities within the area that is being monitored.
The detection region pixel is pre-calibrated and the location is encoded in the number of column and row in the image data. Column number depicts the angle from the reference point and the row number would generally indicate the distance from the view.
Motion detection is then applied to the wide view finder image processing. The output of the view finder is standard gray scale image. The image is fed to the motion detection processing and the output is used for the tracking purposes.
The high-resolution camera is used for tracking and zooming purposes. A PTZ camera may be used as a high-resolution camera. The pan, tilt and zoom of this camera are controlled by the camera's controller, which utilizes the tracking output of the motion detection processing as its control signal.
The PTZ camera is controlled in such a way that its motion changes according to the signal received from the fish eye camera.
Figure 3, is a flow chart of overall workings of the present invention. The surveillance system initializes both the view finder and zoom lens simultaneously. Video stream from the view finder is continuously captured and digitized into frames. The system then applies motion detection technique to every single digitized frame. The motion detection technique applied can either be calibrated to detect the presence or absence of motion in a frame.
From the above step, moving objects (or an occurrence of an event) in the foreground is extracted and stored in a binary format. This information is then used to determine the co-ordinates of the object (or an occurrence of an event). The size of the event in terms of the number of pixel is then determined.
By using the information above, the coordinates and the region of interest is then determined. This is then converted into the signal that is sent to the controller of the high-resolution camera.
The controller then adjusts the pan, tilt and zoom of the high-resolution camera according to the detected object (or an occurrence of an event). The zoom factor of the high resolution camera is automatically determined by the tracking signal generated corresponding to the size, in terms of number of pixels/second of the detected region i.e. region of interest. Figure 3 further elaborates how the calibrated distance from the radius (the image obtained is circular) and the size of the area of interest would determine the amount of zoom factor.
The rotary drum coupled with a slip ring serves as the main rotational tool to pan a field of view of 360 degrees. This enables the high-resolution camera to be rotated at a speed up to 750 rpm, which enables the camera to provide continuous 360 degree real time images. It further eliminates the need for use of cables in the fast moving part of the rotation interface between camera and rotary drum. This gives the advantage of being able to eliminate the possibility of entangling cables.
A ganiometer is used as the means to tilt camera. In this way the angle of the image captured can be as precise as the image that was captured by the fish eye camera. Further , the use of ganiometer enables a smooth transition of the camera with every field of view change. This yields a smooth continuos image. The images that are obtained from the high-resolution camera can be further processed using facial recognition or other pattern recognition software. The image can also be stored and recorded.

Claims

Claims
1. A surveillance device for providing a wide angle view and zoomed view comprising: a. a wide view coverage camera; b. a high resolution camera.
2. A device according to claim 1 , wherein the device houses both the wide view camera and high resolution camera in a single housing
3. A device according to claim 1 , wherein the wide view coverage camera is a 360 degree camera.
4. A device according to claim 2, wherein the wide view camera is a fish eye lens camera.
5. A device according claim 1, wherein the high resolution camera is a zoom camera.
6. A device according to claim 1, wherein the pan of high-resolution camera is controlled by a rotary drum and slip ring.
7. A device according to claim 6, wherein the high resolution camera does not have any cables in the interface between the camera and rotary drum
8. A device according to 6, wherein the high-resolution camera can rotate a continuos 360 degree rotation.
9. A device according to claim 8, wherein the fast rotation mechanism of the camera is achieved by means of a rotary drum in combination with a slip ring.
10. A device according to claim 1, wherein the tilt of high-resolution camera is controlled by a ganiometer.
11. A device according to claim 6, wherein the fast rotation mechanism achieved by the combination of rotary drum and slip ring enables a real time imaging.
12. A device according to claim 9, wherein the ganiometer enables the smooth transition of the field of view when the camera is tilted in a up and down movement
13. A device according to claim 1, wherein the detection region pixel of the wide view camera is pre-calibrated and the location is encoded in the number of column and row in the image data and further characterized in that the column number depicts the angle from the reference point and the row number would generally indicate the distance from the view.
14. A device according to claim 1, wherein the zoom factor of the high resolution camera is determined by the size in terms of pixel of the area of interest.
15. A device according to claim 1, wherein image processing technique is employed to the image captured by the wide view camera to obtain tracking signal.
16. A device according to claim 15_, wherein the image processing technique employed is motion detection.
17. A device and system according to any one of foregoing claims, wherein the pan, tilt and zoom of the high resolution camera are controlled by a controller.
18. A device and system according to claim 9 and 11 , wherein the input signal of the controller is the tracking signal.
19. A device according to claim 1, wherein the wide view coverage camera is a visible light camera, night vision camera or a thermal camera.
20. A device according to claim 1, wherein the wide high- resolution camera is visible light camera, night vision camera or a thermal camera.
21. A device according to claim 1 , wherein the device is a hollow enclosure with two or more cavity to house the cameras.
PCT/MY2008/000154 2007-11-22 2008-11-24 Device and method for a surveillance system WO2009066988A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI20072073A MY164862A (en) 2007-11-22 2007-11-22 Device and method for a surveillance system
MYPI20072073 2007-11-22

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WO2009066988A3 WO2009066988A3 (en) 2009-09-24

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011002775A1 (en) * 2009-06-29 2011-01-06 Bosch Security Systems Inc. Omni-directional intelligent autotour and situational aware dome surveillance camera system and method
WO2012112502A1 (en) * 2011-02-16 2012-08-23 Robert Bosch Gmbh Surveillance camera with integral large-domain sensor
FR2981476A1 (en) * 2011-10-18 2013-04-19 France Telecom Control device for use in e.g. automatic radar to control positioning angle of slave sensor for detection of person's face, has control unit for controlling degree of freedom of slave sensor based on targeting data
CN103167234A (en) * 2011-12-19 2013-06-19 安讯士有限公司 Method for setting up a monitoring camera
EP2648406A1 (en) * 2012-04-04 2013-10-09 Axis AB Method for switching viewing modes in a camera
US8654152B2 (en) 2010-06-21 2014-02-18 Microsoft Corporation Compartmentalizing focus area within field of view
US9208668B1 (en) * 2014-09-16 2015-12-08 Geovision Inc. Camera system with a full view monitoring function
US9535311B2 (en) 2013-12-19 2017-01-03 Axis Ab Monitoring device arrangement
US10277858B2 (en) 2015-10-29 2019-04-30 Microsoft Technology Licensing, Llc Tracking object of interest in an omnidirectional video
US10516823B2 (en) 2015-10-15 2019-12-24 Microsoft Technology Licensing, Llc Camera with movement detection
RU2723640C1 (en) * 2019-12-09 2020-06-17 Вячеслав Михайлович Смелков High-resolution panorama television surveillance computer system device
US11153495B2 (en) * 2019-05-31 2021-10-19 Idis Co., Ltd. Method of controlling pan-tilt-zoom camera by using fisheye camera and monitoring system
US11226545B2 (en) 2015-11-16 2022-01-18 Axis Ab Protective dome for monitoring camera system

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US20030007793A1 (en) * 2001-06-20 2003-01-09 Kiyosuke Suzuki Camera system
US20030160868A1 (en) * 2002-02-28 2003-08-28 Sharp Kabushiki Kaisha Composite camera system, zoom camera image display control method, zoom camera control method, control program, and computer readable recording medium
JP2004242048A (en) * 2003-02-06 2004-08-26 Hitachi Ltd Wide-view angle and high resolution image photographing apparatus
JP2007093973A (en) * 2005-09-28 2007-04-12 Nikon Corp Electronic camera

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011002775A1 (en) * 2009-06-29 2011-01-06 Bosch Security Systems Inc. Omni-directional intelligent autotour and situational aware dome surveillance camera system and method
US9215358B2 (en) 2009-06-29 2015-12-15 Robert Bosch Gmbh Omni-directional intelligent autotour and situational aware dome surveillance camera system and method
US8654152B2 (en) 2010-06-21 2014-02-18 Microsoft Corporation Compartmentalizing focus area within field of view
WO2012112502A1 (en) * 2011-02-16 2012-08-23 Robert Bosch Gmbh Surveillance camera with integral large-domain sensor
US9686452B2 (en) 2011-02-16 2017-06-20 Robert Bosch Gmbh Surveillance camera with integral large-domain sensor
FR2981476A1 (en) * 2011-10-18 2013-04-19 France Telecom Control device for use in e.g. automatic radar to control positioning angle of slave sensor for detection of person's face, has control unit for controlling degree of freedom of slave sensor based on targeting data
US9386280B2 (en) 2011-12-19 2016-07-05 Axis Ab Method for setting up a monitoring camera
US20130155230A1 (en) * 2011-12-19 2013-06-20 Axis Ab Method for setting up a monitoring camera
CN103167234A (en) * 2011-12-19 2013-06-19 安讯士有限公司 Method for setting up a monitoring camera
EP2607951A1 (en) * 2011-12-19 2013-06-26 Axis AB Method for setting up a monitoring camera
US9729835B2 (en) 2012-04-04 2017-08-08 Axis Ab Method for switching viewing modes in a camera
EP2648406A1 (en) * 2012-04-04 2013-10-09 Axis AB Method for switching viewing modes in a camera
US9535311B2 (en) 2013-12-19 2017-01-03 Axis Ab Monitoring device arrangement
US9829773B2 (en) 2013-12-19 2017-11-28 Axis Ab Monitoring device arrangement
US10054844B2 (en) 2013-12-19 2018-08-21 Axis Ab Monitoring device arrangement
US9208668B1 (en) * 2014-09-16 2015-12-08 Geovision Inc. Camera system with a full view monitoring function
US10516823B2 (en) 2015-10-15 2019-12-24 Microsoft Technology Licensing, Llc Camera with movement detection
US10277858B2 (en) 2015-10-29 2019-04-30 Microsoft Technology Licensing, Llc Tracking object of interest in an omnidirectional video
US11226545B2 (en) 2015-11-16 2022-01-18 Axis Ab Protective dome for monitoring camera system
US11153495B2 (en) * 2019-05-31 2021-10-19 Idis Co., Ltd. Method of controlling pan-tilt-zoom camera by using fisheye camera and monitoring system
RU2723640C1 (en) * 2019-12-09 2020-06-17 Вячеслав Михайлович Смелков High-resolution panorama television surveillance computer system device

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