METHOD AND APPARATUS FOR OPERATING A VIDEO SYSTEM

• US 20110102634A1
• Filed: 10/29/2010
• Published: 05/05/2011
• Est. Priority Date: 10/30/2009
• Status: Active Grant

• Current Assignee: Cognyte Technologies Israel Ltd. (Cognyte Software Ltd.)
• Original Assignee: Verint Systems Incorporated
• Inventors: Pardue, William David
• Granted Patent: US 8,625,973 B2
• Time in Patent Office: Days
• US Class Current: 348/231.9
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

A method for operating a video system to generate and store encoded video comprising a plurality of key frames and a plurality of delta frames is provided. The method includes capturing video data comprising a plurality of frames of a scene, and selecting a fundamental view of at least a portion of the scene contained in the plurality of frames. The method also includes generating the plurality of key frames from a first subset of the plurality of frames and the fundamental view of at least the portion of the scene, generating the plurality of delta frames from a second subset of the plurality of frames and the plurality of key frames, and transferring the encoded video for delivery to storage.

Claims

1. A method of operating a video system to generate and store encoded video comprising a plurality of key frames and a plurality of delta frames, the method comprising:

capturing video data comprising a plurality of frames of a scene;

selecting a fundamental view of at least a portion of the scene contained in the plurality of frames;

generating the plurality of key frames from a first subset of the plurality of frames and the fundamental view of at least the portion of the scene;

generating the plurality of delta frames from a second subset of the plurality of frames and the plurality of key frames; and

transferring the encoded video for delivery to storage.

2. The method of claim 1, wherein the encoded video further comprises the fundamental view of at least the portion of the scene.

3. The method of claim 1, wherein selecting the fundamental view includes selecting one or more most common portions of the scene contained in the plurality of frames.

4. The method of claim 1, wherein selecting the fundamental view includes flagging portions of the scene contained in the plurality of frames that do not have a most common view.

5. The method of claim 1, wherein generating the plurality of key frames includes selecting portions of the scene contained in the fundamental view that match corresponding portions of the scene contained in the first subset of the plurality of frames, and determining differences between portions of the scene contained in the fundamental view that do not match corresponding portions of the scene contained in the first subset of the plurality of frames.

6. The method of claim 1, further comprising:

dividing the video data into a plurality of groups of frames; and

selecting a first frame from each of the plurality of groups of frames as the first subset of the plurality of frames; and

selecting remaining frames other than the first frame from each of the plurality of groups of frames as the second subset of the plurality of frames.

7. The method of claim 1, wherein each of the plurality of key frames includes a difference between a corresponding one of the first subset of the plurality of frames and the fundamental view.

8. The method of claim 1, wherein each of the plurality of delta frames includes a difference between a corresponding one of the second subset of the plurality of frames and a corresponding key frame.

9. A video system to generate and store encoded video comprising a plurality of key frames and a plurality of delta frames, the video system comprising:

a video capture device configured to capture video data comprising a plurality of frames of a scene;

a memory configured to store the encoded video; and

a video processor coupled with the video capture device and the memory configured to;

select a fundamental view of at least a portion of the scene contained in the plurality of frames;

generate the plurality of key frames from a first subset of the plurality of frames and the fundamental view of at least the portion of the scene;

generate the plurality of delta frames from a second subset of the plurality of frames and the plurality of key frames; and

transfer the encoded video to the memory.

10. The video system of claim 9, wherein the encoded video further comprises the fundamental view of at least the portion of the scene.

11. The video system of claim 9, wherein selecting the fundamental view includes selecting one or more most common portions of the scene contained in the plurality of frames.

12. The video system of claim 9, wherein selecting the fundamental view includes flagging portions of the scene contained in the plurality of frames that do not have a most common view.

13. The video system of claim 9, wherein generating the plurality of key frames includes selecting portions of the scene contained in the fundamental view that match corresponding portions of the scene contained in the first subset of the plurality of frames, and determining differences between portions of the scene contained in the fundamental view that do not match corresponding portions of the scene contained in the first subset of the plurality of frames.

14. The video system of claim 9, wherein the video processor is further configured to:

divide the video data into a plurality of groups of frames; and

select a first frame from each of the plurality of groups of frames as the first subset of the plurality of frames; and

select remaining frames other than the first frame from each of the plurality of groups of frames as the second subset of the plurality of frames.

15. The video system of claim 9, wherein each of the plurality of key frames includes a difference between a corresponding one of the first subset of the plurality of frames and the fundamental view.

16. The video system of claim 9, wherein each of the plurality of delta frames includes a difference between a corresponding one of the second subset of the plurality of frames and a corresponding key frame.

18. The non-transitory computer-readable medium of claim 15, wherein the encoded video further comprises the fundamental view of at least the portion of the scene.

19. The non-transitory computer-readable medium of claim 15, wherein selecting the fundamental view includes selecting one or more most common portions of the scene contained in the plurality of frames.

20. The non-transitory computer-readable medium of claim 15, wherein generating the plurality of key frames includes selecting portions of the scene contained in the fundamental view that match corresponding portions of the scene contained in the first subset of the plurality of frames, and determining differences between portions of the scene contained in the fundamental view that do not match corresponding portions of the scene contained in the first subset of the plurality of frames.

17. A non-transitory computer-readable medium having instructions stored thereon for operating a computer system to generate and store encoded video comprising a plurality of key frames and a plurality of delta frames, wherein the instructions, when executed by the computer system, direct the computer system to:

capture video data of a scene, the video data comprising a plurality of frames;

select a fundamental view of at least a portion of the scene contained in the plurality of frames;

generate the plurality of key frames from a first subset of the plurality of frames and the fundamental view of at least the portion of the scene;

generate the plurality of delta frames from a second subset of the plurality of frames and the plurality of key frames; and

transfer the encoded video for delivery to storage.