Method and system for geo-referencing and visualization of detected contaminants

• US 7,383,129 B1
• Filed: 09/07/2006
• Issued: 06/03/2008
• Est. Priority Date: 09/07/2006
• Status: Active Grant

• Current Assignee: Peraton, Inc.
• Original Assignee: ITT Manufacturing Enterprises, Inc. (ITT, Inc.)
• Inventors: Baillot, Yohan, Ponsardin, Patrick Louis
• Primary Examiner(s): McElheny, Jr.; Donald E
• Application Number:
  US11/516,545
• Time in Patent Office: 635 Days
• Field of Search: 702/2, 702/5, 702/19, 702/22, 702/28
• US Class Current: 702/2
• CPC Class Codes: G01N 21/94 Investigating contamination, e.g. dust G01N21/85 takes precedence

Abstract

A system and method are provided for visualizing a scene that is monitored for substance contamination. The scene is scanned with a substance detector to detect a substance, such as a harmful chemical or biological substance. The position of the substance is determined. Graphical element data that represents the detected substance in the scene is generated. A displayed view of the scene is augmented with the graphical element data based on the position of the detected substance to show the detected substance in the view of the scene and provide the user with the location and type of detected substance shown with reference to the environment.

Claims

1. A method for visualizing a scene, comprising:

scanning the scene with a substance detector to detect a substance in the scene;

tracking scanning positions of the substance detector in the scene with respect to a first frame of reference;

storing data representing three-dimensional scanning positions of the substance detector in the first frame of reference;

displaying a view of the scene from a second frame of reference;

tracking changes in a relationship between the first frame of reference and the second frame of reference due to changes in position and orientation of the substance detector and/or the view of the scene;

retrieving the data representing the three-dimensional scanning positions of the substance detector in the first frame of reference;

transforming the data from the first frame of reference to the second frame of reference, taking into account the changes in the relationship between the first frame of reference and the second frame of reference; and

augmenting the displayed view of the scene with graphical element data that represents the three-dimensional scanning positions of the substance detector in the second frame of reference.

2. The method of claim 1, wherein said displaying comprises displaying the view of the scene in real-time as said scanning is performed.

3. The method of claim 2, wherein said scanning is performed at a first location in the scene and said displaying comprises displaying the view of the scene taken from said first location in the scene.

4. The method of claim 2, wherein said scanning is performed at a first location in the scene and said displaying comprises displaying the view of the scene taken from a second location.

5. The method of claim 4, and further comprising tracking changes in the view of the scene taken from the second location, and wherein augmenting is based on changes in the view of the scene.

6. The method of claim 5, wherein tracking further comprises tracking changes in the position and/or orientation of the substance detector, and wherein augmenting is based on changes in the view of the scene and changes in the position and/or orientation of the substance detector.

7. The method of claim 6, wherein tracking further comprises tracking changes in position and orientation of a detected substance relative to the substance detector, and wherein transforming comprises transforming a frame of reference for a position-referenced data set representing the detected substance and its position for display in the view of the scene.

8. The method of claim 1, wherein said scanning is performed by a substance detector on or part of one of:

a first manned or unmanned vehicle, a first man-portable apparatus, and a stationary equipment, and said displaying is performed on a see-through display device on or part of one or more of;

a second manned or unmanned vehicle and a man-wearable apparatus.

9. The method of claim 1, wherein augmenting comprises generating the graphical element data so as to represent progress of the substance detector scanning in said scene.

10. The method of claim 1, and further comprising determining a composition and/or name for substance that is detected by the substance detector, and wherein said augmenting generating data to display text for the composition and/or name of a detected substance.

11. The method of claim 10, wherein augmenting comprises generating an attribute for a graphical element for display in the displayed view of the scene, wherein the graphical element indicates whether or not that a detected substance is harmful.

12. The method of claim 10, wherein tracking comprises determining the scanning position of the substance detector with respect to Earth.

13. The method of claim 12, wherein tracking comprises generating geo-referenced data comprising first data representing the composition and/or name of a substance detected by the substance detector and second data representing the three-dimensional position of the detected substance.

14. The method of claim 13, wherein storing comprises storing said geo-referenced data in a database, and wherein retrieving comprises retrieving said geo-referenced data from said database and augmenting comprises generating the graphical element data based on said geo-referenced data.

15. The method of claim 1, wherein scanning comprises scanning a surface in said scene with the substance detector at a distance from said surface.

16. The method of claim 1, wherein said tracking further comprises determining a time when the substance detector detects a substance, said storing further comprises storing data representing the time when the substance detector detects a substance, and wherein augmenting comprises generating graphical data indicative of the time when the substance detector detected the detected substance for display in the displayed view.

17. A system for visualizing a scene that is monitored for substance contamination, comprising:

a detection subsystem comprising a substance detector that scans the scene to detect a substance, and a position tracker that tracks scanning positions of the substance detector with respect to a first frame of reference; and

a storage subsystem that stores data representing three-dimensional scanning positions of the substance detector in the first frame of reference;

a visualization subsystem that displays a view of the scene in a second frame of reference, wherein the visualization subsystem retrieves data from the storage subsystem and transforms the data from the first frame of reference to the second frame of reference taking into account changes in a relationship between the first frame of reference and the second frame of reference due to changes in position and orientation of the substance detector and/or the view of the scene, and wherein the visualization subsystem augments the view of the scene with data that represents the three-dimensional scanning positions of the substance detector in the second frame of reference the displayed view of the scene with graphical element data.

18. The system of claim 17, wherein said visualization subsystem displays a view of the scene as said substance detector scans the scene.

19. The system of claim 17, wherein the detection subsystem and the visualization subsystem are collocated.

20. The system of claim 17, wherein said position tracker tracks changes in the position and/or orientation of the substance detector and the visualization subsystem comprises a position tracker that tracks changes in the view of the scene, and wherein the visualization system comprises a visualization processor that accounts for changes in the view of the scene and changes in the position and/or orientation of the substance detector when augmenting the displayed view with the graphical element data.

21. The system of claim 20, wherein said visualization processor further generates graphical element data that represents detection of a substance in the scene and a three-dimensional position of the substance detected in the scene.

22. The system of claim 21, wherein said visualization subsystem augments the view of the scene with graphical element data that represents scanning progress of the substance detector in the scene.

23. The system of claim 17, wherein said substance detector scans a surface in said scene at a distance from said surface.

24. The system of claim 17, wherein the substance detector is on or part of one of:

a first manned or unmanned vehicle, a first man-portable apparatus, and a stationary equipment, and wherein said visualization subsystem comprises a see-through display device on or part of one or more of;

a second manned or unmanned vehicle and a man-wearable apparatus.

25. The system of claim 17, wherein the detection subsystem determines a composition and/or name for said detected substance, and wherein said visualization subsystem comprises a visualization processor that generates graphical element data to the display text for the composition and/or name of said detected substance.

26. The system of claim 17, wherein the position tracker in the detection subsystem tracks the scanning positions of the substance detector with respect to Earth.

27. The system of claim 26, wherein said detection subsystem comprises a processor that generates geo-referenced data comprising first data representing the composition and/or name of a detected substance and second data representing a three-dimensional geo-referenced position of the detected substance and a time when the substance detector detects a detected substance.

28. The system of claim 27, wherein the storage subsystem comprises a database that stores the geo-referenced data, and wherein said visualization subsystem retrieves the geo-referenced data from which it generates the graphical element data.

29. The system of claim 28, wherein the visualization subsystem and said database subsystem each further comprise a communication interface that enables communication between each other.

30. The system of claim 29, wherein the detection subsystem further comprises a communication interface that enables communication with said database subsystem.

31. The system of claim 30, wherein the detection subsystem, database subsystem and visualization subsystem are at different locations, and wherein the communication interfaces enable wireless communication between the subsystems.

32. A method for training operators to the use of a surface contaminant sensor, comprising:

a. generating virtual data simulating a view of a contamination scene where a virtual substance is present;

b. deploying the operator at the simulated contamination scene while operating the surface contaminant sensor;

c. detecting the virtual substance in the scene with the surface contaminant sensor and generating geo-referenced detection data representative thereof; and

d. displaying the virtual data simulating a view of the contamination scene;

e. augmenting the displayed view of the contamination scene with said geo-referenced data representing detection of the virtual substance to show the detected substance in the view of the contamination scene.

33. A method for displaying data associated with a scene that is monitored for substance contamination, comprising:

scanning the scene with a substance detector to detect a substance in the scene;

tracking scanning positions of the substance detector in the scene with respect to a first frame of reference;

storing data representing three-dimensional geo-referenced scanning positions of the substance detector in the first frame of reference;

displaying video images for a three-dimensional view of the scene from a second frame of reference;

tracking changes in a relationship between the first frame of reference and the second frame of reference due to changes in position and orientation of the substance detector and/or the view of the scene;

retrieving the data representing the three-dimensional geo-referenced scanning positions of the substance detector in the first frame of reference;

transforming the data from the first frame of reference to the second frame of reference, taking into account the changes in the relationship between the first frame of reference and the second frame of reference; and

augmenting the displayed video images of the scene with graphical element data that represents the three-dimensional scanning positions of the substance detector in the second frame of reference.

34. The method of claim 33, wherein displaying comprises displaying map image data of the scene, and augmenting comprises augmenting the map image data with the graphical element data.

35. The method of claim 33, wherein displaying comprises display video images for a real-time view of the scene, and augmenting comprises augmented the real-time view of the scene with the graphical element data.

36. A method for visualizing a scene that has been scanned by a sensor for hazardous substances, comprising:

retrieving from a database data representing geo-referenced three-dimensional scanning positions of the sensor in a first frame of reference as the sensor is scanned through areas of the scene, wherein the data includes indications, if any, of substances detected by the sensor and geo-referenced three-dimensional positions of such detections in the scene;

displaying a real-time view of the scene from a second frame of reference;

tracking changes in a relationship between the first frame of reference and the second frame of reference due to changes in position and orientation of the view of the scene;

transforming the data from the first frame of reference to the second frame of reference, taking into account the changes in the relationship between the first frame of reference and the second frame of reference; and

augmenting the view of the scene with graphical element data that represents the three-dimensional scanning positions of the substance detector in the second frame of reference.

37. A system, comprising:

a database storage subsystem that stores data representing geo-referenced three-dimensional scanning positions of a sensor in a first frame of reference as the sensor is scanned through areas of a scene, wherein the data includes indications, if any, of substances detected by the sensor and geo-referenced three-dimensional positions of such detections in the scene; and

a display subsystem that displays a real-time view of the scene from a second frame of reference, wherein the display subsystem comprises a processor that tracks changes in a relation between the first frame of reference and the second frame of reference due to changes in position and orientation of the view of the scene, transforms the data from the first frame of reference to the second frame of reference taking into account changes in the relationship between the first frame of reference and the second frame of reference, and augments the view of the scene with graphical element data that represents the three-dimensional scanning positions of the substance detector in the second frame of reference.