Geospatial modeling system providing poisson-based geospatial data set merging and related methods

• US 8,239,175 B2
• Filed: 02/13/2008
• Issued: 08/07/2012
• Est. Priority Date: 02/13/2008
• Status: Expired due to Fees

• Current Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Kelley, Patrick, Allen, Josef, Rahmes, Mark, Wivell, Charles
• Primary Examiner(s): ALHIJA, SAIF A
• Application Number:
  US12/030,386
• Publication Number:
  US 20120179433A1
• Time in Patent Office: 1,637 Days
• Field of Search: 703/2, 382/276, 382/284, 382/294
• US Class Current: 703/2
• CPC Class Codes: G06T 17/05 Geographic models

Abstract

A geospatial modeling system may include a geospatial model data storage device, and a processor cooperating with the geospatial model data storage device for merging first and second geospatial data sets for corresponding first and second geospatial regions. The processor may be for generating seam-smoothed geospatial data for a corresponding selected geospatial region between adjacent portions of the first and second geospatial regions by applying Poisson'"'"'s equation to data from at least one of the first and second geospatial data sets for the selected geospatial region using boundary conditions based upon data along corresponding interfaces between the selected geospatial region and adjacent portions of the first and second geospatial regions.

Claims

1. A geospatial modeling system comprising:

a geospatial model data storage device; and

a processor configured to cooperate with said geospatial model data storage device for merging first and second geospatial data sets for corresponding first and second geospatial regions, with the merging being performed without requiring registration;

said processor further configured to generate

a mathematical description of a corresponding selected geospatial region between adjacent portions of the first and second geospatial regions, and

seam-smoothed geospatial data for the corresponding selected geospatial region based on the mathematical description by applying Poisson'"'"'s equation to data from at least one of the first and second geospatial data sets for the selected geospatial region using boundary conditions based upon data along corresponding interfaces between the selected geospatial region and adjacent portions of the first and second geospatial regions.

2. The geospatial modeling system of claim 1 wherein the first and second geospatial data sets comprise different types of geospatial data sets.

3. The geospatial modeling system of claim 1 wherein the first and second geospatial regions overlap.

4. The geospatial modeling system of claim 3 wherein the overlap between the first and second geospatial regions defines the selected geospatial region.

5. The geospatial modeling system of claim 3 wherein said processor preserves a higher gradient of two respective gradients at the overlap.

6. The geospatial modeling system of claim 1 wherein the first and second geospatial regions are abutting.

7. The geospatial modeling system of claim 1 wherein said processor iteratively applies Poisson'"'"'s equation to data from at least one of the first and second geospatial data sets for the selected geospatial region.

8. The geospatial modeling system of claim 1 wherein the first and second geospatial data sets comprise first and second digital elevation model (DEM) data sets.

9. The geospatial modeling system of claim 1 wherein at least one of the first and second geospatial data sets comprises a Light Detection and Ranging (LIDAR) data set.

10. The geospatial modeling system of claim 1 wherein at least one of the first and second geospatial data sets comprises a correlated imagery data set.

11. The geospatial modeling system of claim 1 further comprising a display coupled to said processor, for displaying a geospatial model image based upon the merged first and second geospatial data sets.

12. A geospatial modeling system comprising:

a geospatial model data storage device; and

a processor configured to cooperate with said geospatial model data storage device for merging first and second geospatial data sets for corresponding first and second geospatial regions, with the merging being performed without requiring registration, and with the first and second geospatial data sets comprising different types of geospatial data sets;

said processor further configured to generate

a mathematical description of a corresponding selected geospatial region between adjacent portions of the first and second geospatial regions, and

seam-smoothed geospatial data for a the corresponding selected geospatial region based on the mathematical description by iteratively applying Poisson'"'"'s equation to data from at least one of the first and second geospatial data sets for the selected geospatial region using boundary conditions based upon data along corresponding interfaces between the selected geospatial region and adjacent portions of the first and second geospatial regions.

13. The geospatial modeling system of claim 12 wherein the first and second geospatial regions overlap.

14. The geospatial modeling system of claim 13 wherein the overlap between the first and second geospatial regions defines the selected geospatial region.

15. The geospatial modeling system of claim 13 wherein said processor preserves a higher gradient of two respective gradients at the overlap.

16. The geospatial modeling system of claim 12 wherein the first and second geospatial regions are abutting.

17. A geospatial modeling method comprising:

storing first and second geospatial data sets for corresponding first and second geospatial regions in a geospatial model data storage device;

operating a processor to cooperate with the geospatial model data storage device to

generate a mathematical description of a corresponding selected geospatial region between adjacent portions of the first and second geospatial regions,

generate seam-smoothed geospatial data for the corresponding selected geospatial region based on the mathematical description by applying Poisson'"'"'s equation to data from at least one of the first and second geospatial data sets for the selected geospatial region using boundary conditions based upon data along corresponding interfaces between the selected geospatial region and adjacent portions of the first and second geospatial regions; and

merge the first and second geospatial data sets based upon the seam-smoothed geospatial data without requiring registration.

18. The method of claim 17 wherein the first and second geospatial data sets comprise different types of geospatial data sets.

19. The method of claim 17 wherein the first and second geospatial regions overlap.

20. The method of claim 19 wherein the overlap between the first and second geospatial regions defines the selected geospatial region.

21. The method of claim 19 wherein generating the seam-smoothed geospatial data comprises preserving a higher gradient of two respective gradients at the overlap.

22. The method of claim 17 wherein the first and second geospatial regions are abutting.

23. The method of claim 17 wherein generating the seam-smoothed geospatial data comprises iteratively applying Poisson'"'"'s equation to data from at least one of the first and second geospatial data sets for the selected geospatial region.

24. The method of claim 17 further comprising a display coupled to the processor for displaying a geospatial model image based upon the merged first and second geospatial data sets.