Handheld portable digital geographic data manager

• US 6,083,353 A
• Filed: 09/05/1997
• Issued: 07/04/2000
• Est. Priority Date: 09/06/1996
• Status: Expired due to Term

• Current Assignee: University of Florida Research Foundation, Incorporated (State University System of Florida)
• Original Assignee: University of Florida (State University System of Florida)
• Inventors: Alexander, John F. Jr.
• Primary Examiner(s): Callahan, Timothy P.
• Assistant Examiner(s): NGUYEN, LINH M
• Application Number:
  US08/925,836
• Time in Patent Office: 1,033 Days
• Field of Search: 382/276, 701/213, 702/158
• US Class Current: 202/158
• CPC Class Codes: G01C 11/00 Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
• CPC Class Codes: G01C 11/02 Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
• CPC Class Codes: G01S 19/53 Determining attitude

Abstract

The subject invention provides devices and methods for efficiently and accurately gathering image and other field data using a handheld portable Geographic Data Manager (GDMs). The subject GDMs can utilize a combination of GPS antennas and receivers, digital compasses, inclinometers, gyroscopes, and digital cameras to gather, process, and/or store data which can provide the position and other geographic data and information pertaining to objects of study. The subject GDMs can have application to fields including environmental sampling, surveying, agriculture field data collection, property appraisal, law enforcement, and construction inspection.

Claims

1. A device for gathering position data, comprising:

a position means for providing the position of said device,

an imaging means for imaging an object, wherein said imaging means comprises two digital cameras, wherein processing data from both cameras provides the distance from said device to an imaged object, and

a processing means, wherein said processing means can receive and process data from the position means and data from the imaging means in order to provide position data for an imaged object.

2. The device, according to claim 1, wherein said position means comprises a receiver based on a satellite positioning system.

3. The device, according to claim 2, wherein said position means comprises at least one GPS receiver.

4. The device, according to claim 3, wherein said position means comprises at least two GPS receivers.

5. The device, according to claim 1, wherein said position means is a receiver based on a ground based positioning system.

6. The device, according to claim 1, further comprising a heading means for providing a heading of said device.

7. The device, according to claim 6, wherein said heading means is a digital compass.

8. The device, according to claim 6, wherein said heading means is at least two GPS receivers.

9. The device, according to claim 1, further comprising a user interface means for user interaction with the device.

10. The device, according to claim 1, further comprising a pitch means for providing a pitch of said device.

11. The device, according to claim 10, wherein said pitch means is an inclinometer.

12. The device, according to claim 10, wherein said pitch means of said device is a gyroscope.

13. The device, according to claim 10, wherein said pitch means is at least two GPS receivers.

14. The device, according to claim 10, further comprising a roll means for providing a roll of said device.

15. The device, according to claim 14 wherein said roll means for providing a roll of said device is an inclinometer.

16. The device, according to claim 14, wherein said roll means is a gyroscope.

17. The device, according to claim 14, where said roll means is at least two GPS receivers.

18. The device, according to claim 9, wherein said user interface means is selected from the group consisting of a flat panel display with touch screen, voice interaction, pen commands, and a keyboard.

19. The device, according to claim 1, comprising at least three GPS receivers, wherein data from said three GPS receivers provides a position, a heading, a pitch, and a roll of said device.

20. The device, according to claim 19, wherein data from said two cameras combined with data from the three GPS receivers provides three dimensional position data of an imaged object.

21. The device, according to claim 1, further comprising a means for wireless communication with a remote host computer.

22. The device, according to claim 1, wherein said processing means processes position data of imaged objects such that the position relation of two imaged objects is provided.

23. The device, according to claim 1, further comprising at least one gyroscope, wherein said gyroscope provides data related to information, selected from the group consisting of heading of the device, pitch of the device, and roll of the device, and wherein said gyroscope can be calibrated from data received from a GPS satellite while said device is moving.

24. The device, according to claim 1, wherein said device is incorporated with a vehicle.

25. The device, according to claim 24, wherein imaging means can be removed from the vehicle while said position means remains affixed to the vehicle, and wherein said device further comprises a means for providing data with respect to the imaging means'"'"' position relative to the position means'"'"' position, such that the position of the imaging means can be determined from the position of the position means and the data with respect to the imaging means'"'"' position relative to the position means'"'"' position.

26. The device, according to claim 25, wherein said means for providing data with respect to the imaging means'"'"' position relative to the position means'"'"' position comprises at least one gyroscope.

27. The device, according to claim 24, wherein said device comprises at least two GPS antennas, at least two cameras, and at least one gyroscope mounted to the vehicle.

28. The device, according to claim 26, wherein once the vehicle is position in a region where the device'"'"'s position means functions correctly such that the device'"'"'s position is determined, the gyroscope can be calibrated and the imaging means can then be used in regions where the position means does not correctly function.

29. The device, according to claim 25, wherein said means for providing data with respect to the imaging means'"'"' position utilizes dead reckoning position calculation.

30. The device, according to claim 1, wherein said imaging means is based on a non-visible portion of the light spectrum.

31. The device, according to claim 1, further comprising at least one sensor selected from the group consisting of:

a chemical sensor, a heat sensor and an environmental sensor.

32. The device, according to claim 1, wherein said imaging means comprises at least three cameras.

33. The device, according to claim 1, wherein at least one of said two cameras is movable such that the distance between the cameras can be adjusted.

34. The device, according to claim 1, wherein images produced by the cameras are compared to determine a distance apart the imaged object is in the images produced by the cameras, and wherein the distance apart the imaged object is in the images produced by the cameras is used to determine the distance from said device to the imaged object.

35. The device, according to claim 34, wherein the distance from said device to the imaged object is determined from the distance apart the imaged object is in the images produced by the cameras according to the following equation:

##EQU2## where d_o is the distance to the imaged object, d_c is a spacing between cameras, d_i is the distance apart the imaged object is in the images produced by the cameras, and f is the focal length of the cameras lenses.

36. The device, according to claim 34, wherein enhancement of the imaged object'"'"'s edges is utilized in the determination the distance apart the imaged object is in the imaged produced by the cameras.

37. The device, according to claim 1, wherein said position means comprises a map display, wherein a user designates the location of said device with respect to the map display.

38. The device according to claim 1, wherein said cameras are rotated such that each points toward the object.