GB1409666A - Pattern discrimination system using television - Google Patents

Pattern discrimination system using television

Info

Publication number
GB1409666A
GB1409666A GB4214672A GB4214672A GB1409666A GB 1409666 A GB1409666 A GB 1409666A GB 4214672 A GB4214672 A GB 4214672A GB 4214672 A GB4214672 A GB 4214672A GB 1409666 A GB1409666 A GB 1409666A
Authority
GB
United Kingdom
Prior art keywords
signals
sample
samples
storing
sampling
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.)
Expired
Application number
GB4214672A
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.)
Nac Inc
Original Assignee
Nac Inc
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 Nac Inc filed Critical Nac Inc
Publication of GB1409666A publication Critical patent/GB1409666A/en
Expired legal-status Critical Current

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
    • 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
    • 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
    • G08B13/19634—Electrical details of the system, e.g. component blocks for carrying out specific functions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

1409666 Alarm systems NAC Inc 11 Sept 1972 [9 Dec 1971 20 Jan 1972 4 May 1972] 42146/72 Heading G4N Changes in a pattern under surveillance are detected by: monitoring the pattern with a TV camera; sampling an area of the pattern by sampling the monitor video output signal by vertical and horizontal gating signals; integrating and storing the video signal during one sample period; similarly sampling the same area at a later time; comparing the integrated signals of the two samples; and producing an output signal if they differ by more than a predetermined amount. The comparisons are made repetitively, and in order to avoid the production of false output signals, the stored signal is updated periodically, by storing the second sample of one comparison and using it as the first sample of a subsequent comparison. The arrangement may be used to detect intruders or fines, and a number of monitors may be sequentially fed into the system. As described, the vertical and horizontal gating pulses define nine sample areas which may be adjusted in size and in position in the monitored area. For example in an art gallery the samples may be adjusted to correspond with valuable paintings. The integrated signals of the samples are fed to A/D converters and the storing and comparison is carried out on the resulting digital signals.
GB4214672A 1971-12-09 1972-09-11 Pattern discrimination system using television Expired GB1409666A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP46099008A JPS4864849A (en) 1971-12-09 1971-12-09
JP47007238A JPS4877725A (en) 1971-12-09 1972-01-20
JP47043727A JPS5230088B2 (en) 1971-12-09 1972-05-04

Publications (1)

Publication Number Publication Date
GB1409666A true GB1409666A (en) 1975-10-08

Family

ID=27277520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4214672A Expired GB1409666A (en) 1971-12-09 1972-09-11 Pattern discrimination system using television

Country Status (7)

Country Link
US (1) US3836710A (en)
JP (3) JPS4864849A (en)
CA (1) CA977852A (en)
DE (1) DE2250387A1 (en)
FR (1) FR2162356B3 (en)
GB (1) GB1409666A (en)
NL (1) NL7214561A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150724A (en) * 1983-11-02 1985-07-03 Christopher Hall Surveillance system
GB2158324A (en) * 1984-04-27 1985-11-06 Licentia Gmbh Detecting scene changes in visual information

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134330U (en) * 1974-09-06 1976-03-13
US3988533A (en) * 1974-09-30 1976-10-26 Video Tek, Inc. Video-type universal motion and intrusion detection system
US3969577A (en) * 1974-10-15 1976-07-13 Westinghouse Electric Corporation System for evaluating similar objects
US3942022A (en) * 1974-10-25 1976-03-02 Itek Corporation Rapid response correlation type image motion sensor
JPS5221846A (en) * 1975-08-11 1977-02-18 Toyo Electron Kk Discriminating system of color patterns
US4079416A (en) * 1975-12-01 1978-03-14 Barry-Wehmiller Company Electronic image analyzing method and apparatus
DE2617112C3 (en) * 1976-04-17 1982-01-14 Robert Bosch Gmbh, 7000 Stuttgart Method for determining a movement or a change in the surveillance area of a television camera
JPS5535063U (en) * 1978-08-30 1980-03-06
US4270143A (en) * 1978-12-20 1981-05-26 General Electric Company Cross-correlation video tracker and method
US4257063A (en) * 1979-03-23 1981-03-17 Ham Industries, Inc. Video monitoring system and method
DE3001588A1 (en) * 1980-01-15 1981-07-23 Goodyear Aerospace Corp., Akron, Ohio DIGITAL VIDEO CORRELATOR
US4464789A (en) * 1980-05-19 1984-08-07 Environmental Research Institute Of Michigan Image analyzer for processing multiple frames of image data
WO1982001454A1 (en) * 1980-10-22 1982-04-29 Mahoney Trevor W Video movement detector
JPS58221578A (en) * 1982-06-18 1983-12-23 Toshiba Corp Display controller of picture information
US4688090A (en) * 1984-03-06 1987-08-18 Veitch Simon J Vision system
AU575194B2 (en) * 1984-07-20 1988-07-21 Commonwealth Of Australia, The Intrusion alarm signal enhancement
WO1986001061A1 (en) * 1984-07-20 1986-02-13 The Commonwealth Of Australia Care Of The Secretar A method of signal processing of optical signals
US4679077A (en) * 1984-11-10 1987-07-07 Matsushita Electric Works, Ltd. Visual Image sensor system
JP2603215B2 (en) * 1985-07-04 1997-04-23 キヤノン株式会社 Image recognition method and apparatus
US5534917A (en) * 1991-05-09 1996-07-09 Very Vivid, Inc. Video image based control system
US7504965B1 (en) 2005-08-05 2009-03-17 Elsag North America, Llc Portable covert license plate reader

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244826A (en) * 1938-08-03 1941-06-10 Electric Sorting Machine Compa Sorting machine
US3562423A (en) * 1967-08-15 1971-02-09 Univ Northwestern Dictorial tracking and recognition system which provides display of target identified by brilliance and spatial characteristics
US3603729A (en) * 1969-03-13 1971-09-07 Squires Sanders Inc Motion detector system which samples only a preselected area
US3743768A (en) * 1971-04-02 1973-07-03 Halliburton Co Method and apparatus for electronically monitoring a field of view
US3732366A (en) * 1971-08-13 1973-05-08 Oklahoma School Of Electrical Video pattern recognition system
US3781468A (en) * 1972-06-21 1973-12-25 Sanders Associates Inc Television surveillance system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150724A (en) * 1983-11-02 1985-07-03 Christopher Hall Surveillance system
GB2158324A (en) * 1984-04-27 1985-11-06 Licentia Gmbh Detecting scene changes in visual information

Also Published As

Publication number Publication date
NL7214561A (en) 1973-06-13
JPS4877725A (en) 1973-10-19
FR2162356A1 (en) 1973-07-20
CA977852A (en) 1975-11-11
US3836710A (en) 1974-09-17
JPS495517A (en) 1974-01-18
JPS5230088B2 (en) 1977-08-05
FR2162356B3 (en) 1975-10-31
JPS4864849A (en) 1973-09-07
DE2250387A1 (en) 1973-06-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee