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Crime prevention monitor system

  • US 5,283,644 A
  • Filed: 07/09/1992
  • Issued: 02/01/1994
  • Est. Priority Date: 12/11/1991
  • Status: Expired due to Term
First Claim
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1. A crime prevention monitor system comprising:

  • a terminal apparatus for generating monitor data on a monitor region to be monitored on the basis of a picture signal indicative of an intruder photographed by a monitor camera installed stalled in the monitor region and for sending the generated monitor data onto a predetermined first transmission line;

    a concentrator for performing a concentrating operation over the monitor data received through the first transmission line to generally manage the monitor data of one or a plurality of the monitor regions on a remote control basis and, when the presence of an illegal intruder is recognized at any one of the monitor regions in carrying out the concentrating operation, for generating emergent report data informing the presence of the illegal intruder and transmitting the emergent report data onto a predetermined second transmission line; and

    a report receiver provided in a restraint organization such as a police station, for receiving the emergent report data sent through the second transmission line,said terminal apparatus including;

    sensor means provided in said monitor region for detecting presence or absence of the intruder entering into the monitor region;

    monitor controller means for starting said monitor camera on the basis of the presence of the intruder detected by said sensor means and for sequentially receiving the picture signal photographed by said monitor camera therefrom;

    image processing means for converting the received picture signal into image data;

    identification data setting means for previously setting identification data for the monitor region;

    timer means for outputting time data; and

    first report controller means, in response to the direction of the presence of the intruder by said sensor means, for acquiring the time data of the timer means, calling said concentrator through said first transmission line, forming said monitor data on the basis of said converted image data, the identification data of the monitor region and the acquired time data, and sending the formed monitor data to the called concentrator,said concentrator including;

    image demodulator means for separating said image data from the received monitor data and demodulating the image data;

    identification data extractor means for extracting the identification data of the monitor region from the received monitor data;

    an image database for previously registering therein image data of authorized persons with respect to the respective monitor regions;

    image collector means for collating said demodulated image data with all the image data of the authorized persons of one of the monitor regions specified said extracted identification data among the image data registered in said image database and for outputting a matching signal indicative of a coincidence when the demodulated image data coincides with the image data of any of the authorized persons and outputting a non-matching signal indicative of a non-coincidence when the demodulated image data fails to coincide with the image data of any of the authorized persons;

    second report controller means, when the image collator means outputs said non-matching signal, for calling said report receiver through said second transmission line, forming together with said time data said emergent report data informing the presence of the illegal intruder into the monitor region specified by the identification data extracted from said monitor data, and sending the formed emergent report data to the called report receiver, and whereinthe image data previously registered in said image database correspond to face pictures of the authorized persons, and said image collator means includes means for extracting a plurality of still images from said demodulated image data, means for further extracting face parts from the plurality of extracted still images, means for generating a face picture model from the extracted face part images, and means for overlapping the corresponding images of the image data registered in said image database on said face picture model and for judging said coincidence or non-coincidence of the basis of extracted contours and features of the overlapped images.

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