SYSTEM AND METHOD FOR AUTOMATIC CAMERA HAND-OFF USING LOCATION MEASUREMENTS

• US 20110069173A1
• Filed: 09/21/2010
• Published: 03/24/2011
• Est. Priority Date: 09/23/2009
• Status: Active Grant

• Current Assignee: Cognyte Technologies Israel Ltd. (Cognyte Software Ltd.)
• Original Assignee: Verint Systems Limited (Verint Systems Incorporated)
• Inventors: Hazzani, Gideon
• Granted Patent: US 9,386,282 B2
• Time in Patent Office: Days
• US Class Current: 348/159
• 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 13/19645 Multiple cameras, each having view on one of a plurality of scenes, e.g. multiple cameras for multi-room surveillance or for tracking an object by view hand-over
• CPC Class Codes: G08B 13/19658 Telephone systems used to communicate with a camera, e.g. PSTN, GSM, POTS
• CPC Class Codes: G08B 13/2462 Asset location systems combined with EAS inventory, tracking, logistic G06Q10/00; entrance control systems G07C9/00
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04N 21/21805 enabling multiple viewpoints, e.g. using a plurality of cameras
• CPC Class Codes: H04N 23/69 Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
• CPC Class Codes: H04N 5/268 Signal distribution or switching
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services

Abstract

Systems and methods for receiving video images from a plurality of video cameras having respective fields of view that cover a geographical region. At a first time, first video images of an object may be output, where the images are captured by a first video camera selected from the plurality of video cameras. Location indications may be received, which specify a geographical location of the object in the geographical region and which are determined independently of the video images. At a second time subsequent to the first time, a second video camera from the plurality may be selected based on the location indications. The output may be switched to the second video images of the object, which are captured by the selected second video camera.

Claims

1. A method, comprising:

receiving video images from a plurality of video cameras having respective fields of view that cover a geographical region;

at a first time, outputting first video images of an object, which are captured by a first video camera selected from the plurality;

receiving location indications, which specify a geographical location of the object in the geographical region and which are determined independently of the video images;

at a second time subsequent to the first time, selecting based on the location indications a second video camera from the plurality, different from the first video camera; and

switching to output second video images of the object, which are captured by the selected second video camera.

2. The method according to claim 1, wherein the object comprises an individual moving through the geographical region.

3. The method according to claim 1, wherein the object is associated with a wireless communication terminal that communicates with a communication network, and wherein receiving the location indications comprises receiving location measurements of the wireless communication terminal from the communication network.

4. The method according to claim 3, wherein selection of the second video camera is performed by a switch in the communication network.

5. The method according to claim 1, wherein outputting the first and second video images comprises displaying the first and second video images to an operator.

6. The method according to claim 1, wherein selecting the second video camera comprises querying a predefined mapping of geographical locations to image locations in the fields of views of the video cameras.

7. The method according to claim 1, wherein selecting the second video camera comprises calculating, based on the location indications, respective first and second image locations of the object in first and second fields of view of the first and second video cameras, and selecting the second camera based on the first and second image locations.

8. The method according to claim 1, wherein selecting the second video camera further comprises controlling the second video camera so as to modify a respective field of view of the second video camera responsively to the location indications.

9. A system, comprising:

a first interface, which is configured to receive video images from a plurality of video cameras having respective fields of view that cover a geographical region;

a second interface, which is configured to receive location indications, which specify a geographical location of an object in the geographical region and which are determined independently of the video images; and

a processor, which is configured to output, at a first time, first video images of the object, which are captured by a first video camera selected from the plurality, to select from the plurality based on the location indications, at a second time subsequent to the first time, a second video camera different from the first video camera, and to switch to output second video images of the object, which are captured by the selected second video camera.

10. The system according to claim 9, wherein the object comprises an individual moving through the geographical region.

11. The system according to claim 9, wherein the object is associated with a wireless communication terminal that communicates with a communication network, and wherein the second interface is configured to receive location measurements of the wireless communication terminal from the communication network.

12. The system according to claim 11, wherein the processor is comprised in a switch in the communication network.

13. The system according to claim 9, wherein the processor is configured to display the first and second video images to an operator.

14. The system according to claim 9, wherein the processor is configured to select the second video camera by querying a predefined mapping of geographical locations to image locations in the fields of views of the video cameras.

15. The system according to claim 9, wherein the processor is configured to calculate, based on the location indications, respective first and second image locations of the object in first and second fields of view of the first and second video cameras, and to select the second camera based on the first and second image locations.

16. The system according to claim 9, wherein the processor is configured to control the second video camera so as to modify a respective field of view of the second video camera responsively to the location indications.