METHOD AND APPARATUS FOR AUTOMATIC DETECTION AND IDENTIFICATION OF UNIDENTIFIED VIDEO SIGNALS

• US 20090006337A1
• Filed: 02/26/2008
• Published: 01/01/2009
• Est. Priority Date: 12/30/2005
• Status: Abandoned Application

• Current Assignee: Mediaguide, Inc. (Mobile Research Labs, Ltd.)
• Original Assignee: Mediaguide, Inc. (Mobile Research Labs, Ltd.)
• Inventors: Cheung, Kwan
• Application Number:
  US12/037,876
• Publication Number:
  US 20090006337A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/785 using colour or luminescence

Abstract

A method of detecting the identity of video programming is described, whereby known video programming is converted into a set of pattern vectors stored in a database and incoming detected video programming is converted into a set of pattern vectors that are used to search the database for matching pattern vectors indicating a match with the known video programming.

Claims

1. A method of determining the identity of incoming video programming comprising:

Calculating at least one fingerprint from a first video source;

Searching a database comprised of stored fingerprints for at least one sufficiently matching fingerprint, where each such stored fingerprint is stored with accompanying data representing the identity of the video from which the stored fingerprint was derived;

Storing the identity of the video corresponding to the matching fingerprint in a file with a reference to the incoming video programming source.

2. The method of claim 1 where the calculated fingerprint is comprised of a horizontal projection of a portion of a frame of video.

3. The method of claim 1 where the calculated fingerprint is comprised of a vertical projection of a portion of a frame of video.

4. The method of claim 1 where the searching step is comprised of executing a range search of N dimensions, where N is the number of numeric elements comprising the calculated fingerprint.

5. The method of claim 1 where the range search determines which stored fingerprints are sufficiently similar to the calculated fingerprints within some pre-determined tolerance.

6. The method of claim 5 where the searching step further comprises determining whether out of a predetermined number of sequentially calculated fingerprints, a majority of the sequentially calculated fingerprints meet the tolerance requirement.

7. The method of claim 4 where the range search is conducted using a fast range search method.

8. The method of claim 1 further comprising removing substantially all of the dark border region pixels of all of the incoming video programming frames.

9. The method of claim 1 further comprising rotating to substantially a rectilinear position relative to the edges of the frames substantially all of the incoming video programming frames.

10. The method of claim 1 further comprising equalizing the pixel values of the frames of incoming video programming.

11. The method of claim 1 further comprising maintaining at least one thread of candidate matching programming and pruning any candidate thread if the series of matching frames in that candidate thread stop matching while other candidate matching threads continue to match.

12. A system that executes the method of claims 1-11.

13. A computer data storage device comprised of program data, that when executed by a computer, executes any of the methods claimed in claims 1-11.

14. A method of detecting unauthorized video programming distribution comprising:

Retrieving from a website at least one frame of incoming video programming;

Calculating at least one fingerprint out of the incoming video programming;

Searching a database of known stored video programming fingerprints for a sufficient match of such at least one incoming fingerprints, where such known video fingerprints are stored with a reference to the identity of the stored video programming fingerprints;

Storing in a data file the location of the website from which the incoming video programming was retrieved and the identity of the matching stored video programming.