Personnel security screening system with enhanced privacy

• US 8,135,112 B2
• Filed: 08/04/2010
• Issued: 03/13/2012
• Est. Priority Date: 02/01/2007
• Status: Active Grant

• 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
• Assistant Examiner(s): Artman, Thomas R
• Application Number:
  US12/849,987
• Publication Number:
  US 20110081099A1
• Time in Patent Office: 587 Days
• Field of Search: 378/57, 378/62, 378 86- 90, 378/98.12, 382130-132, 382/282, 382/283
• 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 system for generating and processing an image comprising at least one processor adapted to execute a plurality of programmatic instructions wherein, upon execution of said instructions, the system:

a. Generates a first image, having a plurality of regions wherein each region has an associated scatter intensity, from detected X-ray radiation;

b. Identifies in said first 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; and

c. Creates a second image from the first region and a third image from the second region wherein the third image is representative of off-body areas of the first image.

2. The system of claim 1 wherein, upon execution of said instructions, the system processes the second image and the third image to create a second processed image and a third processed image.

3. The system of claim 2 wherein, upon execution of said instructions, the system combines the second processed image and the third processed image to create a combined image.

4. The system of claim 1 wherein the first image is that of said person combined with a background.

5. The system of claim 4 wherein the second image is representative of the person without said background.

6. The system of claim 1 wherein the second image and third image are created by applying a process that was empirically derived from a data library.

7. The system of claim 1 wherein the second image and third image are created by applying at least one object recognition process.

8. The system of claim 1 wherein the processor processes the second image to create a processed image that maintains data representative of a threat and that reduces anatomical detail of a person in said first image.

9. The system of claim 8 wherein the second image is a representation of at least a region of the original image that is processed using intensity-based image contrasting.

10. The system of claim 8 wherein the second image is a representation of at least a region of the original image that is processed using edge detection algorithms.

11. The system of claim 1 wherein the processor processes at least one of said second image and third image to detect concealed contraband.

12. A system for processing an X-ray image comprising at least one processor adapted to execute a plurality of programmatic instructions wherein, upon execution of said instructions, the system:

a. Receives data representative of detected X-ray radiation;

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

c. Identifies 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 at least one threshold value, wherein the first intensity is different than the second intensity;

d. Creates a first region image from the first region and a second region image from the second region; and

e. Individually processes 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.

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

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

15. The system of claim 13 wherein the first region image and second region image are created by applying an empirically derived algorithm.

16. The system of claim 13 wherein first region image and second region image are generated by applying at least one object recognition algorithm to the original image.

17. The system of claim 13 wherein the first region image is processed to create a first processed region image that maintains object of interest information.

18. The system of claim 17 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.