Forming a single image from overlapping images

• US 20050190991A1
• Filed: 02/23/2005
• Published: 09/01/2005
• Est. Priority Date: 02/27/2004
• Status: Abandoned Application

• Current Assignee: Intergraph Software Technologies Company (Hexagon AB)
• Original Assignee: Intergraph Software Technologies Company (Hexagon AB)
• Inventors: McCleese, Roy DeWayne
• Application Number:
  US11/064,076
• Publication Number:
  US 20050190991A1
• Time in Patent Office: Days
• US Class Current: 382/294
• CPC Class Codes: G01C 11/00 Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying

Abstract

Forming a single image from multiple images is described. A first image and a second image partially overlap to define a common overlap region, and each image has multiple pixels. A boundary between the first image and the second image is automatically calculated based on processed pixel values in the common overlap region. Then the first and second image may be integrated along the boundary to form a single image.

Claims

1. A method of forming a single image from a plurality of images, the method comprising:

for a first image and a second image which partially overlap to define a common overlap region, each image having a plurality of pixels, automatically calculating a boundary between the first image and the second image based on processed pixel values in the common overlap region; and

integrating the first and second image along the boundary to form a single image.

2. A method according to claim 1, wherein calculating a boundary includes minimizing a difference between intensity values of pixels adjacent to the boundary.

3. A method according to claim 2, wherein the pixel intensity values are used as weights which represent short line segments in a shortest path algorithm.

4. A method according to claim 3, further comprising:

reducing a digital seam associated with the boundary by eliminating redundant segment vertices.

5. A method according to claim 1, wherein calculating a boundary is based on a Voronoi diagram of the first and second images with respect to a camera center point of each image.

6. A method according to claim 1, wherein the first and second images are ortho-rectified images.

7. A method according to claim 1, wherein the first and second images are aerial images of a geographic region.

8. A method according to claim 1, wherein the first and second images are satellite images of a geographic region.

9. An imaging system adapted to use the method according to any of claims 1-8.

10. Computer software adapted to perform the method according to any of claims 1-8.