Optimal multi-camera setup for computer-based visual surveillance

• US 20030058342A1
• Filed: 06/07/2002
• Published: 03/27/2003
• Est. Priority Date: 09/27/2001
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Trajkovic, Miroslav
• Application Number:
  US10/165,089
• Publication Number:
  US 20030058342A1
• Time in Patent Office: Days
• US Class Current: 348/207.1
• CPC Class Codes: G06T 7/20 Analysis of motion motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51
• CPC Class Codes: G06V 10/147 Details of sensors, e.g. sensor lenses fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69
• CPC Class Codes: G08B 13/19602 Image analysis to detect motion of the intruder, e.g. by frame subtraction
• CPC Class Codes: G08B 13/19641 Multiple cameras having overlapping views on a single scene
• CPC Class Codes: G08B 13/1968 Interfaces for setting up or customising the system
• CPC Class Codes: G08B 21/0476 Cameras to detect unsafe condition, e.g. video cameras
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

A measure of effectiveness of a camera'"'"'s deployment includes the camera'"'"'s effectiveness in providing image information to computer-vision applications. In addition to, or in lieu of, measures based on the visual coverage provided by the deployment of multiple cameras, the effectiveness of the deployment includes measures based on the ability of one or more computer-vision applications to perform their intended functions using the image information provided by the deployed cameras. Of particular note, the deployment of the cameras includes consideration of the perspective information that is provided by the deployment.

Claims

1. A method of deploying cameras in a multi-camera system, comprising:

determining a measure of effectiveness based at least in part on a measure of expected computer-vision effectiveness provided by a deployment of the cameras at a plurality of camera locations, and

determining whether the deployment is acceptable, based on the measure of effectiveness of the deployment.

2. The method of claim 1, further including

modifying one or more of the plurality of camera locations to provide an alternative deployment,

determining a second measure of effectiveness, based at least in part on the alternative deployment, and

determining whether the alternative deployment is acceptable, based on the second measure of effectiveness.

3. The method of claim 1, further including

modifying the deployment by adding one or more camera locations to the plurality of camera locations to provide an alternative deployment,

determining a second measure of effectiveness, based at least in part on the alternative deployment, and

determining whether the alternative deployment is acceptable, based on the second measure of effectiveness.

4. The method of claim 1, wherein

determining the measure of effectiveness is further based at least in part on a measure of expected visual coverage provided by the deployment of the cameras at the plurality of camera locations.

5. The method of claim 1, wherein

the measure of computer-vision effectiveness is based on a measure of perspective provided by the deployment.

6. The method of claim 1, further including

deploying the cameras at the plurality of camera locations.

7. A method of deploying cameras in a multi-camera system, comprising:

determining a first deployment of the cameras at a plurality of camera locations based on an expected visual coverage provided by the deployment,

determining a measure of expected computer-vision effectiveness provided by the first deployment of the cameras at the plurality of camera locations, and

determining a second deployment of cameras based on the first deployment and the measure of expected computer-vision effectiveness.

8. The method of claim 7, wherein

the second deployment includes the plurality of camera locations of the first deployment and one or more additional camera locations that provide a higher measure of expected computer-vision effectiveness than the first deployment.

9. The method of claim 7, wherein

the measure of expected computer-vision effectiveness includes a measure of perspective provided by the first deployment.

10. The method of claim 7, further including

deploying the cameras according to the second deployment.

11. A computer program that, when operated on a computer system, causes the computer system to effect the following operations:

determine a measure of effectiveness based at least in part on a measure of expected computer-vision effectiveness provided by a deployment of cameras at a plurality of camera locations, and

determine whether the deployment is acceptable, based on the measure of effectiveness of the deployment.

12. The computer program of claim 11, wherein the computer program further causes the computer system to:

modify one or more of the plurality of camera locations to provide an alternative deployment,

determine a second measure of effectiveness, based at least in part on the alternative deployment, and

determine whether the alternative deployment is acceptable, based on the second measure of effectiveness.

13. The computer program of claim 11, wherein the computer program further causes the computer system to:

modify the deployment by adding one or more camera locations to the plurality of camera locations to provide an alternative deployment,

determine a second measure of effectiveness, based at least in part on the alternative deployment, and

determine whether the alternative deployment is acceptable, based on the second measure of effectiveness.

14. The computer program of claim 11, wherein

the computer system further determines the measure of effectiveness based at least in part on a measure of expected visual coverage provided by the deployment of the cameras at the plurality of camera locations.

15. The computer program of claim 11, wherein

the measure of computer-vision effectiveness is based on a measure of perspective by the deployment.