Video tripwire

• US 6,970,083 B2
• Filed: 11/12/2003
• Issued: 11/29/2005
• Est. Priority Date: 10/09/2001
• Status: Expired due to Term

• Current Assignee: Avigilon Fortress Corporation
• Original Assignee: ObjectVideo Incorporated (Alarm.com Holdings, Inc.)
• Inventors: Chosak, Andrew J., Haering, Niels, Brewer, Paul C., Venetianer, Peter L., Lipton, Alan J., Kalapa, Pramod, Myers, Gary, Clark, John I. W., Yen, Chung-Cheng
• Primary Examiner(s): Mullen, Thomas
• Application Number:
  US10/704,645
• Publication Number:
  US 20040105570A1
• Time in Patent Office: 748 Days
• Field of Search: 340/541, 340552-557, 348/143, 348152-156, 715/700, 715/764
• US Class Current: 340/541
• CPC Class Codes: G06T 2207/30196 Human being; Person
• CPC Class Codes: G06T 7/246 using feature-based methods, e.g. the tracking of corners or segments
• CPC Class Codes: G06T 7/80 Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• CPC Class Codes: G06V 20/53 Recognition of crowd images, e.g. recognition of crowd congestion
• CPC Class Codes: G08B 13/19608 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
• CPC Class Codes: G08B 13/19652 Systems using zones in a single scene defined for different treatment, e.g. outer zone gives pre-alarm, inner zone gives alarm
• CPC Class Codes: G08B 13/19673 Addition of time stamp, i.e. time metadata, to video stream
• CPC Class Codes: G08B 13/1968 Interfaces for setting up or customising the system

Abstract

A video tripwire system may enable a user to enter a video tripwire by drawing it on a video image or on a snapshot from a video stream. This drawing may be enabled by a graphical user interface.

Claims

1. A video tripwire system comprising:

a sensing device producing video output; and

a computer system, including a user interface, for performing calibration and for gathering and processing data based on video output received from the sensing device, the user interface comprising input means and output means, said input means including a graphical user interface, wherein the computer system displays processed data, and wherein said graphical user interface is adapted to enable a user to draw a video tripwire on at least one of a video image of said video output or a snapshot taken from said video output.

2. The video tripwire system according to claim 1, wherein said graphical user interface comprises a point-and-click interface.

3. The video tripwire system according to claim 2, wherein the point-and-click interface comprises at least one menu.

4. The video tripwire system according to claim 1, wherein said graphical user interface is further adapted to enable a user to enter at least one tripwire rule.

5. The video tripwire system according to claim 4, wherein said at least one tripwire rule includes at least one of directionality, object type, and object speed.

6. The video tripwire system according to claim 4, wherein said graphical user interface includes at least one menu adapted to enable a user to enter said at least one tripwire rule.

7. A video tripwire user interface comprising:

a graphical user interface adapted to enable a user to draw a video tripwire on at least one of a video image and a snapshot from a video stream.

8. The user interface according to claim 7, wherein the graphical user interface comprises a point-and-click interface.

9. The user interface according to claim 7, wherein the graphical user interface comprises at least one menu.

10. The user interface according to claim 7, wherein the graphical user interface is further adapted to enable a user to enter at least one tripwire rule.

11. The user interface according to claim 7, wherein the graphical user interface is further adapted to enable a user to enter at least one video event rule.

12. A method of initializing a video tripwire system, comprising:

entering parameters; and

drawing a video tripwire on at least one of a video image and a snapshot from a video stream.

13. The method according to claim 12, wherein said drawing a video tripwire comprises:

using a graphical user interface.

14. The method according to claim 13, wherein the graphical user interface comprises a point-and-click interface.

15. The method according to claim 12, further comprising:

entering at least one tripwire rule.

16. The method according to claim 15, wherein the tripwire rule includes at least one of directionality, object type, and object speed.

17. The method according to claim 15, wherein said entering comprises:

using a point-and-click interface.

18. The method according to claim 17, wherein the point-and-click interface comprises at least one menu.

19. The method according to claim 12, further comprising:

entering at least one video event rule.

20. A computer-readable medium containing instructions that, when executed by a computer, cause the computer to be adapted to enable a user to perform the method of claim 12.

21. The computer-readable medium according to claim 20, further containing instructions that, when executed by a computer, cause the computer to create a graphical user interface adapted to enable a user to perform said drawing.

22. The computer-readable medium according to claim 21, wherein the graphical user interface comprises a point-and-click interface.

23. The computer-readable medium according to claim 22, wherein the point-and-click interface includes at least one menu.

24. A video tripwire system comprising:

a computer system; and

the computer-readable medium according to claim 20.

25. A video tripwire system comprising:

a sensing device producing video output; and

a computer system, including a user interface, for performing calibration and for gathering and processing data based on video output received from the sensing device, the user interface comprising input means and output means, wherein the computer system displays processed data, and wherein the computer system includes software permitting a user to enter at least one virtual tripwire, the video tripwire comprising at least one of a curved video tripwire, a multi-segment video tripwire, and a multiple parallel video tripwire.

26. A method of implementing a video tripwire system comprising:

calibrating a sensing device to determine sensing device parameters for use by the system;

initializing the system, including entering at least one virtual tripwire, said at least one virtual tripwire comprising at least one of a curved tripwire, a multi-segment tripwire, and a multiple parallel tripwire;

obtaining data from the sensing device;

analyzing the data obtained from the sensing device to determine if the at least one virtual tripwire has been crossed; and

triggering a response to a virtual tripwire crossing.

27. A video tripwire system comprising:

a sensing device providing output data; and

a computer system receiving the output data and comprising;

a user interface;

at least one processor; and

a computer-readable medium containing software implementing the method of claim 26.

28. A video tripwire apparatus comprising:

an apparatus adapted to be coupled to a sensing device, said sensing device to produce video output, said apparatus including a user interface, said apparatus adapted to perform calibration and to gather and process data based on video output received from the sensing device, the user interface comprising a graphical user interface, wherein said apparatus is adapted to display processed data, and wherein said graphical user interface is adapted to enable a user to draw a video tripwire on at least one of a video image of said video output or a snapshot taken from said video output.

29. The apparatus of claim 28, wherein said apparatus comprises application-specific hardware to emulate a computer and/or software, said hardware adapted to enable said video tripwire.