Smart Video Surveillance System Ensuring Privacy

• US 20070296817A1
• Filed: 07/07/2005
• Published: 12/27/2007
• Est. Priority Date: 07/09/2004
• Status: Abandoned Application

• Current Assignee: Emitall Surveillance S.A.
• Original Assignee: Emitall Surveillance S.A.
• Inventors: Ebrahimi, Touradj, Dufaux, Frederic
• Application Number:
  US11/631,806
• Publication Number:
  US 20070296817A1
• Time in Patent Office: Days
• US Class Current: 348/161
• CPC Class Codes: G08B 13/19667 Details realated to data compression, encryption or encoding, e.g. resolution modes for reducing data volume to lower transmission bandwidth or memory requirements
• CPC Class Codes: G08B 13/19671 Addition of non-video data, i.e. metadata, to video stream
• CPC Class Codes: G08B 13/19684 Portable terminal, e.g. mobile phone, used for viewing video remotely
• CPC Class Codes: G08B 13/19686 Interfaces masking personal details for privacy, e.g. blurring faces, vehicle license plates
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

This invention describes a video surveillance system which is composed of three key components 1—smart camera(s), 2—server(s), 3—client(s), connected through IP-networks in wired or wireless configurations. The system has been designed so as to protect the privacy of people and goods under surveillance. Smart cameras are based on JPEG 2000 compression where an analysis module allows for efficient use of security tools for the purpose of scrambling, and event detection. The analysis is also used in order to provide a better quality in regions of the interest in the scene. Compressed video streams leaving the camera(s) are scrambled and signed for the purpose of privacy and data integrity verification using JPSEC compliant methods. The same bit stream is also protected based on JPWL compliant methods for robustness to transmission errors. The operations of the smart camera are optimized in order to provide the best compromise in terms of perceived visual quality of the decoded video, versus the amount of power consumption. The smart camera(s) can be wireless in both power and communication connections. The server(s) receive(s), store(s), manage(s) and dispatch(es) the video sequences on wired and wireless channels to a variety of clients and users with different device capabilities, channel characteristics and preferences. Use of seamless scalable coding of video sequences prevents any need for transcoding operations at any point in the system.

Claims

1. A smart video surveillance system comprising:

at least one smart video surveillance camera configured to capture video content of an area of interest, analyze said captured video content and identify objects of interest, scramble portions of said video content corresponding to said objects of interest, and transmit said video content over a network;

a server coupled to said network for receiving and storing said encoded video content; and

at least one client coupled to said network for accessing said video content stored on said server and configured to selectively unscramble portions of interest.

2. The smart video surveillance system as recited in claim 1, wherein said smart video surveillance camera includes a camera and a personal computer.

3. The smart video surveillance system as recited in claim 1, wherein said smart video surveillance camera includes a stand-alone camera server with an integrated cpu.

4. The smart video surveillance system as recited in claim 1, wherein said smart surveillance camera is configured to identify human faces.

5. The smart video surveillance system as recited in claim 1, wherein said smart surveillance camera is configured to capture and identify objects of interest in said captured video content.

6. The smart video surveillance system as recited in claim 5, wherein said smart surveillance camera is configured to capture video content of a background scene of the area of interest and to identify said objects of interest as a function of the difference between said objects of interest relative to said background scene.

7. The smart video surveillance system as recited in claim 6, wherein said smart video surveillance camera is configured to compensate for lighting changes between scenes.

8. The smart video surveillance system as recited in claim 5, wherein said smart surveillance camera is configured to scramble portions of said video scenes corresponding to objects of interest as a function of a first encryption key.

9. The smart video surveillance system as recited in claim 5 wherein said smart surveillance camera is configured to encode portions of said video scenes according to a standard video compression format defining encoded data.

10. The smart video surveillance system as recited in claim 9, wherein said standard compression format is JPEG-2000.

11. The smart video surveillance system as recited in claim 9, wherein said data is encoded and scrambled according to a standard format as a function of a second encryption key.

12. The smart video surveillance system as recited in claim 11, wherein said standard format is Secure JPEG 2000.

13. The smart video surveillance system as recited in claim 9, wherein said smart surveillance camera is configured to transmit said encoded video content to said server over a wireless network using a standard wireless network protocol.

14. The smart video surveillance system as recited in claim 13, wherein said standard wireless network protocol is Wireless JPEG 2000.