SYSTEM FOR DETECTING COUNTERFEIT GOODS AND METHOD OF OPERATING THE SAME

• US 20160327660A1
• Filed: 05/07/2015
• Published: 11/10/2016
• Est. Priority Date: 05/07/2015
• Status: Active Grant

• Current Assignee: Morpho Detection (Safran SA)
• Original Assignee: Morpho Detection (Safran SA)
• Inventors: Harding, Geoffrey
• Granted Patent: US 10,215,879 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01N 2223/302 comparative arrangements
• CPC Class Codes: G01N 2223/306 computer control
• CPC Class Codes: G01N 2223/639 material in a container
• CPC Class Codes: G01N 2223/643 object on conveyor
• CPC Class Codes: G01V 5/22 Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
• CPC Class Codes: G01V 5/222 measuring scattered radiation
• CPC Class Codes: G01V 5/271 using a network, e.g. a remote expert, accessing remote data or the like

Abstract

A computer-implemented method of handling a container includes performing a first scan of the container. The container includes objects therein. The scan includes irradiating the container with polychromatic x-rays with a first x-ray scanning system at a first geographic location and generating a first scan record using a processing device. The method also includes moving the container from the first geographic location to a second geographic location. The method further includes performing a second scan of the container including irradiating the container with polychromatic x-rays with a second x-ray scanning system at the second geographic location and generating a second scan record using a processing device. The method also includes comparing the first scan record and the second scan record. The method further includes determining the second scan record is substantially indistinguishable or distinguishable from the first scan record.

Claims

1. A computer-implemented method of handling a container including at least one object therein, said method comprising:

performing a first scan of the container comprising irradiating the container with polychromatic x-rays with a first x-ray scanning system at a first geographic location;

generating, using at least one processing device, a first scan record;

moving the container from the first geographic location to a second geographic location;

performing a second scan of the container comprising irradiating the container with polychromatic x-rays with a second x-ray scanning system at the second geographic location;

generating, using the at least one processing device, a second scan record;

comparing the first scan record and the second scan record; and

determining whether;

the second scan record is substantially indistinguishable from the first scan record;

or

the second scan record is substantially distinguishable from the first scan record.

2. The method in accordance with claim 1 further comprising:

implementing a scan record protocol; and

applying the scan record protocol to the first x-ray scanning system during the first scan and applying the scan record protocol to the second x-ray scanning system during the second scan.

3. The method in accordance with claim 2, wherein the first x-ray scanning system and the second x-ray scanning system each include at least one x-ray tube and a conveyor belt, and wherein the scan record protocol includes predefined parameters for at least one of conveyor belt speed, conveyor belt speed distribution along a dimension substantially parallel to a direction of belt translation, an x-ray tube voltage, and an x-ray tube current.

4. The method in accordance with claim 3 further comprising establishing an origin of coordinates with respect to the conveyor belt for each of the first x-ray scanning system and the second x-ray scanning system.

5. The method in accordance with claim 2 further comprising:

implementing a data record protocol; and

applying the data record protocol to the first x-ray scanning system during the first scan and applying the data record protocol to the second x-ray scanning system during the second scan.

6. The method in accordance with claim 5 further comprising:

reconstructing, using the at least one processing device, a first multidimensional voxelized representation of the container using the first scan record; and

reconstructing, using the at least one processing device, a second multidimensional voxelized representation of the container using the second scan record, wherein the first multidimensional voxelized representation of the container and the second multidimensional voxelized representation of the container each includes a plurality of voxels.

7. The method in accordance with claim 6, wherein reconstructing the first multidimensional voxelized representation of the container using the first scan record and reconstructing the second multidimensional voxelized representation of the container using the second scan record comprises at least one of:

aggregating at least a portion of the plurality of voxels in at least one of the first multidimensional voxelized representation of the container and the second multidimensional voxelized representation of the container;

correcting at least a portion of data within at least one of the first scan record and the second scan record; and

extracting at least a portion of data within at least one of the first scan record and the second scan record.

8. The method in accordance with claim 7, wherein reconstructing the first multidimensional voxelized representation of the container using the first scan record and reconstructing the second multidimensional voxelized representation of the container using the second scan record comprises one of:

reconstructing a first and second four-dimensional (4-D) voxelized representation of the container using a computed tomography (CT) imaging system, wherein the first three dimensions represent a spatial location of each voxel of the plurality of voxels, and the fourth dimension represents a plurality of energy values defining an energy spectrum of the polychromatic x-rays; and

reconstructing a first and second five-dimensional (5-D) voxelized representation of the container using an x-ray diffraction imaging (XDI) system, wherein the first three dimensions represent a spatial location of each voxel of the plurality of voxels, the fourth dimension represents a plurality of momentum transfer values defining a momentum transfer spectrum of the container, and the fifth dimension represents a plurality of angles of incidence of x-rays irradiating each voxel of the plurality of voxels defined with respect to a system axis.

9. The method in accordance with claim 7, wherein the data record protocol includes predefined parameters for voxel aggregation, data correction, and data extraction.

10. The method in accordance with claim 1, wherein determining the second scan record is substantially indistinguishable from the first scan record comprises determining the container and the at least one object therein received at the second geographic location are substantially identical to the container and the at least one object therein shipped from the first geographic location.

11. The method in accordance with claim 1, wherein determining the second scan record is substantially distinguishable from the first scan record comprises determining the container and the at least one object therein received at the second geographic location are not the container and the at least one object therein shipped from the first geographic location.

12. A container handling system comprising:

at least one processing device;

a first x-ray scanning system at a first geographic location coupled to said at least one processing device, said first x-ray scanning system configured to perform a first x-ray scan of an container, said at least one processing device configured to generate a first scan record of the container; and

a second x-ray scanning system at a second geographic location coupled to said at least one processing device, said second x-ray scanning system configured to perform a second x-ray scan of the container, said at least one processing device further configured to;

generate a second scan record of the container;

compare the first scan record and the second scan record; and

determine whether;

the container scanned at the second geographic location is substantially indistinguishable from the container scanned at the first geographic location;

or

the container scanned at the second geographic location is distinguishable from the container scanned at the first geographic location.

13. The container handling system in accordance with claim 12, said at least one processing device further configured to:

implement a scan record protocol; and

apply the scan record protocol to said first x-ray scanning system during the first scan and apply the scan record protocol to said second x-ray scanning system during the second scan.

14. The container handling system in accordance with claim 13, wherein said first x-ray scanning system and said second x-ray scanning system each include at least one x-ray tube and a conveyor belt, and wherein the scan record protocol includes predefined parameters for at least one of a speed of said conveyor belt, a speed distribution along a dimension substantially parallel to a direction of translation of said conveyor belt, a voltage of said x-ray tube, and a current of said x-ray tube.

15. The container handling system in accordance with claim 14 further comprising an established origin of coordinates with respect to said conveyor belt for each of said first x-ray scanning system and said second x-ray scanning system.

16. The container handling system in accordance with claim 13, said at least one processing device further configured to:

implement a data record protocol;

apply the data record protocol to said first x-ray scanning system during the first scan and apply the data record protocol to said second x-ray scanning system during the second scan;

reconstruct a first multidimensional voxelized representation of the container using the first scan record; and

reconstruct a second multidimensional voxelized representation of the container using the second scan record, wherein the first multidimensional voxelized representation of the container and the second multidimensional voxelized representation of the container each includes a plurality of voxels.

17. The container handling system in accordance with claim 16, said at least one processing device further configured to:

aggregate at least a portion of the plurality of voxels in at least one of the first multidimensional voxelized representation of the container and the second multidimensional voxelized representation of the container;

correct at least a portion of data within at least one of the first scan record and the second scan record; and

extract at least a portion of data within at least one of the first scan record and the second scan record, wherein the data record protocol includes predefined parameters for voxel aggregation, data correction, and data extraction.

18. The container handling system in accordance with claim 17, said at least one processing device further configured to reconstruct the first multidimensional voxelized representation of the container and reconstruct the second multidimensional voxelized representation of the container though one of:

reconstructing a first and second four-dimensional (4-D) voxelized representation of the container using a computed tomography (CT) imaging system, wherein the first three dimensions represent a spatial location of each voxel of the plurality of voxels, and the fourth dimension represents a plurality of energy values defining an energy spectrum of the polychromatic x-rays; and

reconstructing a first and second five-dimensional (5-D) voxelized representation of the container using an x-ray diffraction imaging (XDI) system, wherein the first three dimensions represent a spatial location of each voxel of the plurality of voxels, the fourth dimension represents a plurality of momentum transfer values defining a momentum transfer spectrum of the container, and the fifth dimension represents a plurality of angles of incidence of x-rays irradiating each voxel of the plurality of voxels defined with respect to a system axis.

19. The container handling system in accordance with claim 12, wherein determining the second scan record is substantially indistinguishable from the first scan record comprises determining the container and the at least one object therein received at the second geographic location are substantially identical to the container and the at least one object therein shipped from the first geographic location.

20. The container handling system in accordance with claim 12, wherein determining the second scan record is substantially distinguishable from the first scan record comprises determining the container and the at least one object therein received at the second geographic location are not the container and the at least one object therein shipped from the first geographic location.

22. The container handling system in accordance with claim 12, wherein said first x-ray scanning system is one of an x-ray diffraction imaging (XDI) system or a computed tomography (CT) imaging system.

23. The container handling system in accordance with claim 12, wherein said first x-ray scanning system is a multiple inverse fan beam (MIFB) x-ray diffraction imaging (XDI) system.