Personnel security screening system with enhanced privacy

• US 7,796,733 B2
• Filed: 02/01/2008
• Issued: 09/14/2010
• Est. Priority Date: 02/01/2007
• Status: Expired due to Fees

• Current Assignee: Rapiscan Systems Incorporated (OSI Systems Incorporated)
• Original Assignee: Rapiscan Systems Incorporated (OSI Systems Incorporated)
• Inventors: Hughes, Ronald J.
• Primary Examiner(s): Glick; Edward J
• Assistant Examiner(s): Artman; Thomas R
• Application Number:
  US12/024,320
• Publication Number:
  US 20080212742A1
• Time in Patent Office: 956 Days
• Field of Search: 378/57, 378/87, 378/98.12
• US Class Current: 378/87
• CPC Class Codes: G01T 1/167 Measuring radioactive content of objects, e.g. contamination whole body counters G01T1/163
• CPC Class Codes: G01V 5/222 measuring scattered radiation

Abstract

The present invention is directed towards processing security images of people subjected to X-ray radiation. The present invention processes a generated image by dividing the generated image into at least two regions or mask images, separately processing the at least two regions of the image, and viewing the resultant processed region images either alone or as a combined image.

Claims

1. A method for generating and processing an image comprising the steps of:

subjecting a person to an X-ray source;

detecting X-ray radiation;

generating an original image, having a plurality of regions wherein each region has an associated scatter intensity, from said detected X-ray radiation;

using a processor, identifying in said original image a first region having a first scatter intensity and a second region having a second scatter intensity by comparing the scatter intensity of each of said plurality of regions to a threshold value, wherein the first scatter intensity is greater than the second scatter intensity;

creating a first region image from the first region and a second region image from the second region wherein the second region image is representative of off-body areas of the original image; and

individually processing the first region image and the second region image to create a first processed region image and a second processed region image.

2. The method of claim 1 further comprising the step of combining the first processed region image and second processed region image to create a combined image.

3. The method of claim 1 wherein the original image generated is that of said person combined with a background.

4. The method of claim 3 wherein the first region image is representative of the person without said background.

5. The method of claim 1 wherein the first region image and second region image are created by applying an empirical determination derived from a library of knowledge.

6. The method of claim 1 wherein the first region image and second region image are created by employing object recognition techniques.

7. The method of claim 1 wherein the first region image is processed to create a first processed region image that maintains object of interest information and reduced anatomical detail of the person.

8. The method of claim 7 wherein the first processed region image is a representation of at least a region of the original image that is processed using intensity-based image contrasting.

9. The method of claim 8 wherein the first processed region image is a representation of at least a region of the original image that is processed using edge detection algorithms.

10. The method of claim 1 wherein the image processing method is employed to detect concealed contraband and dangerous objects.

11. A method for processing images in an X-ray backscatter imaging system for inspecting a human body comprising:

subjecting said body to backscatter radiation;

detecting said radiation;

producing data derived from the detection of said radiation;

generating an original image from said data wherein said original image is of said body combined with a background, wherein said original image has a plurality of regions and wherein each region has an associated intensity;

using a processor, identifying in said original image a first region having a first intensity and a second region having a second intensity by comparing the intensity of each of said plurality of regions to a threshold value, wherein the first intensity is greater than the second intensity;

creating a first region image from the first region and a second region image from the second region; and

individually processing the first region image and second region image to create a first processed region image and a second processed region image wherein the second processed region image is representative of said background.

12. The method of claim 11 wherein the first region image is representative of said body without said background.

13. The method of claim 11 wherein the first processed region image and second processed region image are combined to create a final image.

14. The method of claim 11 wherein the first region image and second region image are created by applying an empirical determination derived from a library of knowledge.

15. The method of claim 11 wherein the first region image and second region image are created by employing object recognition techniques.

16. The method of claim 11 wherein the first region image is processed to create a first processed region image that maintains object of interest information and reduced anatomical detail of the person.

17. The method of claim 11 wherein the first processed region image is a representation of at least a region of the original image that is processed using intensity-based image contrasting.