METHOD FOR PRE-PROCESSING AN IMAGE IN FACIAL RECOGNITION SYSTEM

• US 20120301020A1
• Filed: 09/23/2011
• Published: 11/29/2012
• Est. Priority Date: 05/23/2011
• Status: Active Grant

• Current Assignee: Infosys Limited
• Original Assignee: Infosys Limited
• Inventors: Tallamraju, Ravindra Babu, Venkateshaiah, Subrahmanya Sreenivasan, Annajirao Danivas, Chethan Shikaripur, Kalmanje, Mahalakshmi, Chandrappa, Pavitra
• Granted Patent: US 8,798,391 B2
• Time in Patent Office: Days
• US Class Current: 382/165
• CPC Class Codes: G06V 10/44 Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
• CPC Class Codes: G06V 40/162 using pixel segmentation or colour matching

Abstract

A method preprocessing scheme that improves classification accuracy of a face recognition system comprises identifying a plurality of edges of an image. The method further comprises step of identifying a plurality of discontinuities in the plurality of edges of the image. Furthermore, the method also comprises generating contiguous outline for the image. The last step of the method comprises filling a background of the image with at least one color.

Claims

1. A method comprising:

identifying a plurality of edges of an image;

identifying a plurality of discontinuities in the plurality of edges of the image;

generating contiguous outline for the image; and

filling a background of the image with at least one color.

2. The method of claim 1 further comprises generating the plurality of edges to the image using standard algorithms.

3. The method of claim 2 further comprises generating the image outline.

4. The method of claim 1 further comprises receiving the image.

5. The method of claim 1 wherein identifying the plurality of discontinuities in the plurality of edges of the image further comprises, preventing the at least one color being applied on the entire image.

6. The method of claim 1 wherein the at least one color is gray.

7. The method of claim 1 wherein generating contiguous outline for the image further comprises generating contiguous outline for the image using linear interpolation method.

8. The method of claim 1 further comprises, isolating a face portion of the image.

9. The method of claim 8 further comprises, applying at least one color to the image, wherein a value of the at least one color is in the range of about 0 to 255.

10. A computer program product, comprising a machine-accessible medium having instructions encoded thereon for enabling a processor to perform the operations of:

program code adapted for identifying a plurality of edges of an image;

program code adapted for identifying a plurality of discontinuities in the plurality of edges of the image;

program code adapted for generating contiguous outline for the image;

program code adapted for filling a background of the image with at least one color.

11. The computer program product of claim 10 further comprising program code adapted for generating the plurality of edges to the image using standard algorithms.

12. The computer program product of claim 10 further comprising program code adapted for generating the image outline.

13. The computer program product of claim 10 further comprising program code adapted for receiving the image.

14. The computer program product of claim 10 further comprising program code adapted for preventing the at least one color being applied on the entire image.

15. The computer program product of claim 10 further comprising program code adapted for generating contiguous outline for the image using linear interpolation method.

16. The computer program product of claim 10 further comprising program code adapted for isolating a face portion of the image.