Apparatus for Monitor, Storage and Back Editing, Retrieving of Digitally Stored Surveillance Images

• US 20080181462A1
• Filed: 04/01/2008
• Published: 07/31/2008
• Est. Priority Date: 04/26/2006
• Status: Active Grant

• Current Assignee: LinkedIn Corporation (Microsoft Corporation)
• Original Assignee: International Business Machines Corporation
• Inventors: Ban, Oliver K.
• Granted Patent: US 7,826,667 B2
• Time in Patent Office: Days
• US Class Current: 382/107
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/28 by using information signals recorded by the same method as the main recording G11B27/22 takes precedence

Abstract

A system and method of recording digitally stored surveillance images comprises dividing a series of continuous digital picture image frames according to timing intervals; storing a reference image in a frame buffer of a motion analyzer; detecting a motion difference between a captured image and the reference image; attributing a motion code and time stamp on the captured image; and recording the captured image when the motion code and time stamp match a predetermined threshold.

Claims

1. A method of recording digitally stored surveillance images, said method comprising:

dividing a series of continuous digital picture image frames according to timing intervals;

storing a reference image in a frame buffer of a motion analyzer;

detecting a motion difference between a captured image and said reference image;

attributing a motion code and time stamp on said captured image; and

recording said captured image when said motion code and time stamp match a predetermined threshold.

2. The method of claim 1, all the limitations of which are incorporated herein by reference, further comprising:

coding a position of pixels located in a foreground of a digital picture image frame;

sending the coded positions of said pixels located in said foreground of said digital picture image frame to said frame buffer of said motion analyzer;

separating a background pixel group from a foreground pixel group in said digital picture image frames based on the coded positions; and

compressing said pixels in said foreground pixel group.

3. The method of claim 2, all the limitations of which are incorporated herein by reference, further comprising configuring said motion analyzer with dimension register arrays adapted to code the position of said pixels located in said foreground of said digital picture image frame.

4. The method of claim 2, all the limitations of which are incorporated herein by reference, further comprising configuring said motion analyzer with a comparator array comprising exclusive OR computer-graphic logic adapted to separate said background pixel group from said foreground pixel group.

5. The method of claim 1, all the limitations of which are incorporated herein by reference, further comprising configuring said motion analyzer as a mini Cathode Ray Tube Controller (CRTC).

6. The method of claim 1, all the limitations of which are incorporated herein by reference, wherein a configuration of said motion analyzer is variable.

7. The method of claim 1, all the limitations of which are incorporated herein by reference, wherein said captured image is recorded only when a motion or a difference between said captured image and said reference image is detected.

8. A program storage device readable by computer, tangibly embodying a program of instructions executable by said computer to perform a method of recording digitally stored surveillance images, said method comprising:

dividing a series of continuous digital picture image frames according to timing intervals;

storing a reference image in a frame buffer of a motion analyzer;

detecting a motion difference between a captured image and said reference image;

attributing a motion code and time stamp on said captured image; and

recording said captured image when said motion code and time stamp match a predetermined threshold.

9. The program storage device of claim 8, all the limitations of which are incorporated herein by reference, wherein said method further comprises:

coding a position of pixels located in a foreground of a digital picture image frame;

sending the coded positions of said pixels located in said foreground of said digital picture image frame to said frame buffer of said motion analyzer;

separating a background pixel group from a foreground pixel group in said digital picture image frames based on the coded positions; and

compressing said pixels in said foreground pixel group.

10. The program storage device of claim 9, all the limitations of which are incorporated herein by reference, wherein said method further comprises configuring said motion analyzer with dimension register arrays adapted to code the position of said pixels located in said foreground of said digital picture image frame.

11. The program storage device of claim 9, all the limitations of which are incorporated herein by reference, wherein said method further comprises configuring said motion analyzer with a comparator array comprising exclusive OR computer-graphic logic adapted to separate said background pixel group from said foreground pixel group.

12. The program storage device of claim 8, all the limitations of which are incorporated herein by reference, wherein said method further comprises configuring said motion analyzer as a mini Cathode Ray Tube Controller (CRTC).

13. The program storage device of claim 8, all the limitations of which are incorporated herein by reference, wherein a configuration of said motion analyzer is variable.

14. The program storage device of claim 8, all the limitations of which are incorporated herein by reference, wherein said captured image is recorded only when a motion or a difference between said captured image and said reference image is detected.

15. A system for recording digitally stored surveillance images, said system comprising:

a series of continuous digital picture image frames dividable according to timing intervals;

a motion analyzer adapted to store a reference image;

a motion detector operatively connected to said motion analyzer, wherein said motion detector is adapted to detect a motion difference between a captured image and said reference image;

an image differentiator operatively connected to said motion analyzer, wherein said image differentiator is adapted to attribute a motion code and time stamp on said captured image; and

a recorder operatively connected to said motion analyzer, wherein said recorder is adapted to record said captured image when said motion code and time stamp match a predetermined threshold.

16. The system of claim 15, all the limitations of which are incorporated herein by reference, wherein said motion analyzer further comprises:

a dimension register array adapted to code a position of pixels located in a foreground of a digital picture image frame;

a frame buffer adapted to store the coded positions of said pixels located in said foreground of said digital picture image frame;

a comparator adapted to separate a background pixel group from a foreground pixel group in said digital picture image frames based on the coded positions; and

an image compressor adapted to compress said pixels in said foreground pixel group.

17. The system of claim 16, all the limitations of which are incorporated herein by reference, wherein said motion analyzer comprises a comparator array comprising exclusive OR computer-graphic logic adapted to separate said background pixel group from said foreground pixel group.

18. The system of claim 15, all the limitations of which are incorporated herein by reference, wherein said motion analyzer comprises a mini Cathode Ray Tube Controller (CRTC).

19. The system of claim 15, all the limitations of which are incorporated herein by reference, wherein a configuration of said motion analyzer is variable.

20. The system of claim 15, all the limitations of which are incorporated herein by reference, wherein said captured image is recorded only when a motion or a difference between said captured image and said reference image is detected.