WO2008107925A1 - Caméra de poursuite panoramique - Google Patents

Caméra de poursuite panoramique Download PDF

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Publication number
WO2008107925A1
WO2008107925A1 PCT/IT2008/000139 IT2008000139W WO2008107925A1 WO 2008107925 A1 WO2008107925 A1 WO 2008107925A1 IT 2008000139 W IT2008000139 W IT 2008000139W WO 2008107925 A1 WO2008107925 A1 WO 2008107925A1
Authority
WO
WIPO (PCT)
Prior art keywords
camera
cameras
panoramic
devices
moving
Prior art date
Application number
PCT/IT2008/000139
Other languages
English (en)
Inventor
Emanuele Menegatti
Enrico Pagello
Alberto Pretto
Original Assignee
Emanuele Menegatti
Enrico Pagello
Alberto Pretto
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 Emanuele Menegatti, Enrico Pagello, Alberto Pretto filed Critical Emanuele Menegatti
Publication of WO2008107925A1 publication Critical patent/WO2008107925A1/fr

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
    • 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
    • H04N23/61—Control of cameras or camera modules based on recognised objects
    • 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
    • H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
    • 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
    • H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture

Definitions

  • This invention refers to a vision system used for filming and for surveillance of environments, human activities and production processes.
  • thermo cameras e.g., thermo cameras and cameras sensitive to wavelengths different from the visible light (e.g., infrared cameras). These cameras are used to film environments or human activities .
  • the filmed images can be broadcasted to human operators, can be recorded in analogical or digital format, can be processed to extract information (like moving objects or people or the occurring of a certain event). Moving cameras can be controlled in order to follow (or to frame) just a certain region of interest in the scene.
  • Any kind of perspective camera provide a limited field of view (i.e. only a fraction of the surroundings of the camera can be framed).
  • the field of view can be widened by using fish-eye lens, but this results in a loss of resolution and of smaller details in the scene.
  • Moving perspective cameras can be moved around the vertical and horizontal axis in order to frame every part of the scene with a high resolution.
  • they can cover only a portion of the environment.
  • regions of the scene not framed by the camera This might results in a loss of surveillance or in a loss of detection of important actions occurring in non-framed regions (e.g., the fast motion of a person, or the presence of several simultaneous actions at different spots, etc.).
  • Panoramic cameras e.g., a catadioptric camera or a polidiotric camera
  • Panoramic cameras enable a complete vision of the surroundings of the camera at any time.
  • the image resolution is rather low.
  • Vision system device integrating a moving camera (with motors for pan and/or tilt, and/or zoom) and a panoramic camera of any kind (catadioptric or polidiotric).
  • the two cameras thanks to an intelligent image processing (realized on hardware and/or on software) actively cooperate to monitor the complete surrounding environment by exploiting the advantages of both types of cameras.
  • the information extracted from the panoramic images is used with the aim of actively control the moving camera to frame the region, the people, and the objects of interest.
  • the panoramic and the perspective images grabbed by this integrated device can be broadcasted and/or processed to extract information on occurrence of specific actions or on moving objects/people. By fusing the information coming from the images of the two integrated cameras, it is possible to calculate detailed information about the state, the variations and the distance of static and moving objects in the surroundings of the integrated device.
  • Vision system device integrating a panoramic camera of any kind (e.g., a polidioptric cameras like the one depicted in Fig. B-I, or a catadioptric camera like the one depicted in Fig. A-l-2-5) and a moving camera of any kind (camera that can rotate about its vertical axis and/or the horizontal axis, and/or both axes, like a speed-dome, Fig. A-4).
  • This vision system device can process the panoramic images (on software and/or on hardware) by exploiting computer vision and/or artificial intelligence and/or sensor fusion algorithms. The processing is aimed at controlling the moving camera in order to maximize its performances and its coverage.
  • the images coming from the moving camera can be processed to extract additional information at a higher resolution about the state of the monitored environment and of the people/objects in the environment.
  • the panoramic camera provides a 360 degree horizontal field of view at any time of the environment surrounding the integrate vision system device.
  • the moving camera for instance a Pan-Tilt- Zoom (PTZ) camera provide at any moment a detailed view of a smaller field of view and the possibility, by activating the moving camera motors, to frame with a higher resolution every area covered by the panoramic camera.
  • the resolution at which every area is framed can be increased by activating the optional zoom installed on the perspective camera, (e.g. Fig. A-3).
  • This integrated device can process the panoramic images and control the moving camera either exploiting an internal processing unit (remotely configurable) and/or the processing can be demanded to a remote processing unit to which the images are transmitted either in analogical or in digital standard.
  • the link (to send the images or to configure the device) between this integrated vision system device and the remote processing unit can either be wired or wireless.
  • the list of events of interest can be selected or parameterized by the human operator.
  • the moving camera is inactive (or optionally it can move on a predefined sequence of motions or be joysticked by a human operator).
  • the moving camera is autonomously moved by the integrating the information of the two cameras to track the cause that triggered the event detection (for instance a moving person or a certain object, called in the following target of interest).
  • the panoramic camera provides a global view of the environment in which the system can track the target of interests even if they are out of the field of view of the moving camera.
  • Other cameras in the environment can exploit the information on the global state of the environment extracted from the panoramic images.
  • the target of interest is lost in the moving camera, the information provided by the panoramic camera allows to frame again the lost target of interest.
  • the moving camera integrated in this vision system keeps the original functionalities of commercial moving cameras (e.g., PTZ cameras). For instance, it can moves continuously following a predetermined patrolling motion or can be manually joysticked by a remote human operator.
  • PTZ cameras e.g., PTZ cameras
  • the moving camera will frame them on a time-slicing way assigning to every target a time-slice which duration is selected by the user
  • the user can define priorities based on the size, the shape, and/or the color of the target to be tracked and on the kind of action to be tracked.
  • the vision system can process also the images grabbed by the moving camera to extract more detailed information on the target of interest
  • Fig. A and B of Table I depict two possible implementations of the proposed device.
  • the panoramic camera is a catadioptric camera composed of a convex mirror (Fig.A-1), a perspective camera aimed at the tip of the mirror (Fig. A-2), a transparent support (Fig. A-5).
  • the perspective camera is a speed-dome PTZ (Pan-Tilt- Zoom, Fig. A-4) that can rotate about the horizontal and vertical axis and it is fitted with a motorized zoom (Fig. A-3).
  • the second implementation presents an alternative panoramic camera composed of a polidiotric camera (Fig. B-I) (i.e. an array of perspective cameras in pre-set positions (Fig. B-2) whose images can be stitched to create a panoramic image of the surrounding environment.
  • the moving camera is a speed-dome PTZ (Fig.B-4).

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Studio Devices (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

Dispositif à système de vision intégrant une caméra mobile (avec des moteurs de panoramique et/ou d'inclinaison, et/ou de zoom) et une caméra panoramique de tout type (catadioptrique ou polidiotrique). Les deux caméras grâce à un traitement d'image intelligent (réalisé avec du matériel et/ou du logiciel) coopèrent activement pour surveiller l'environnement complet en exploitant les avantages des deux types de caméras. Les informations extraites des images panoramiques sont utilisées dans le but de contrôler activement la caméra mobile pour cadrer la région, les personnes, et les objets d'intérêt. Les images panoramiques et en perspective saisies par ce dispositif intégré peuvent être diffusées et/ou traitées pour extraire des informations à l'occurrence d'actions spécifiques ou d'objets/personnes mobiles. En faisant fusionner les informations provenant des images des deux caméras intégrées, il est possible de calculer des informations détaillées sur l'état, les variations et la distance des objets statiques et mobiles dans l'environnement du dispositif intégré.
PCT/IT2008/000139 2007-03-02 2008-02-29 Caméra de poursuite panoramique WO2008107925A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000062A ITVI20070062A1 (it) 2007-03-02 2007-03-02 Telecamera panoramica ad inseguimento
ITVI2007A000062 2007-03-02

Publications (1)

Publication Number Publication Date
WO2008107925A1 true WO2008107925A1 (fr) 2008-09-12

Family

ID=39493273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2008/000139 WO2008107925A1 (fr) 2007-03-02 2008-02-29 Caméra de poursuite panoramique

Country Status (2)

Country Link
IT (1) ITVI20070062A1 (fr)
WO (1) WO2008107925A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111669547A (zh) * 2020-05-29 2020-09-15 成都易瞳科技有限公司 全景视频结构化方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030071891A1 (en) * 2001-08-09 2003-04-17 Geng Z. Jason Method and apparatus for an omni-directional video surveillance system
WO2004042667A2 (fr) * 2002-11-07 2004-05-21 Wqs Ltd. Dispositif de surveillance
EP1536633A1 (fr) * 2003-11-27 2005-06-01 Sony Corporation Appareil photographique et méthode, système de supervision, programme et medium d'enregistrement
US20060192887A1 (en) * 2005-02-28 2006-08-31 Sony Corporation Information processing system, information processing apparatus and method, and program
US20060284971A1 (en) * 2005-06-15 2006-12-21 Wren Christopher R Composite surveillance camera system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030071891A1 (en) * 2001-08-09 2003-04-17 Geng Z. Jason Method and apparatus for an omni-directional video surveillance system
WO2004042667A2 (fr) * 2002-11-07 2004-05-21 Wqs Ltd. Dispositif de surveillance
EP1536633A1 (fr) * 2003-11-27 2005-06-01 Sony Corporation Appareil photographique et méthode, système de supervision, programme et medium d'enregistrement
US20060192887A1 (en) * 2005-02-28 2006-08-31 Sony Corporation Information processing system, information processing apparatus and method, and program
US20060284971A1 (en) * 2005-06-15 2006-12-21 Wren Christopher R Composite surveillance camera system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111669547A (zh) * 2020-05-29 2020-09-15 成都易瞳科技有限公司 全景视频结构化方法

Also Published As

Publication number Publication date
ITVI20070062A1 (it) 2008-09-03

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