Method of and apparatus for performing perspective transformation of visible stimuli

• US 6,157,385 A
• Filed: 05/17/1999
• Issued: 12/05/2000
• Est. Priority Date: 12/14/1992
• Status: Expired due to Term

• Current Assignee: Grandeye Limited (Oncam Global Group AG)
• Original Assignee: Ford Oxaal
• Inventors: Oxaal, Ford
• Primary Examiner(s): Jankus, Almis R.
• Application Number:
  US09/312,959
• Time in Patent Office: 568 Days
• Field of Search: 345/419-425, 345/427-430
• US Class Current: 345/427
• CPC Class Codes: G03B 37/02 with scanning movement of lens or cameras
• CPC Class Codes: G06T 15/20 Perspective computation
• CPC Class Codes: G06T 3/12 Panospheric to cylindrical image transformations
• CPC Class Codes: G06T 3/18 Image warping, e.g. rearranging pixels individually
• CPC Class Codes: H04N 23/698 for achieving an enlarged field of view, e.g. panoramic image capture

Abstract

The principle purpose of the present invention is to provide an image processing system which uses the two methods to form visible stimuli which dipict visual shape. In particular, the present invention either transforms a first visible configuration to a asecond visible configuration that depicts (in one of the two possible ways given) the visual shapes induced by the first visible configuration, or it determines the visible configuration necessary to depict the desired visual configuration. Using the present invention, it is possible to transfrom a full 360 degrees of visible space (i.e., front, back, up, down, right and left directional views) onto a single display surface.

Claims

1. A method comprising generating a substantially seamless spherical image by combining at least two images separately captured from a single focal point and different directions of view, wherein each of the at least two images is a circular image.

2. The method as set forth in claim 1, further comprising processing the at least two images to eliminate redundant data.

3. A method comprising:

taking at least two images from a single focal point and different directions of view, wherein each of the at least images is a circular image; and

,

combining the at least two images in such a manner as to created a substantially seamless spherical image.

4. The method as set forth in claim 3, wherein the combining is performed by digitizing the at least two images to create at least two respective digital images, and then using software to digitally stitch together the at least two respective digital images.

5. The method as set forth in claim 3, further comprising displaying the substantially seamless spherical image.

6. The method as set forth in claim 3, further comprising using software to manipulate the at least two respective digital images in such a manner as to facilitate interactive viewing of the substantially seamless spherical image.

7. The method as set forth in claim 3, wherein the combining is performed by digitizing the at least two images to create at least two respective digital images, and then using software to process the at least two respective digital images to eliminate redundant portions of the substantially seamless spherical imaged contained in any two of the least two respective digital images.

8. A method comprising using a programmed computer to digitally stitch together at least two digital, circular images that represent the visible world as seen from a fixed focal point and at least two respective directions of view, in such a manner as to generated a substantially spherical image data set.

9. The method as set forth in claim 8, further comprising using the sperical image data set to display a seamless spherical image on a display device.

10. The method as set forth in claim 8, further comprising using a selected portion of the spherical image data to set to display a rectangular image on a display device.

11. The method as set forth in claim 10, wherein the using step is repeated a plurality of times so as to generate a sequence of rectangular images on the display device.

12. A method comprising:

capturing at least two images from a single focal point and different directions of view, wherein each of the at least two images is a circular image;

digitizing each of the at least two images to thereby generate at least two respective image data sets; and

generating a spherical image data set by combining the at least two respective image data sets.

13. The method as set forth in claim 12, further comprising displaying a magnified portion of the spherical image data set.

14. The method as set forth in claim 12, further comprising displaying a substantially seamless spherical image in response to the spherical image data set.

15. The method as set forth in claim 14, wherein the seamless spherical image represents a portion of the visible world that would be seen by a viewer having a 360°

field of view from the single focal point.

16. The method as set forth in claim 14, wherein the seamless spherical image constitutes a visual depiction of a 360°

field of view of the visible world from the single focal point.

17. The method as set forth in claim 14, wherein the seamless spherical image represents a 360°

field of view of the visible world from a specified viewpoint.

18. The method as set forth in claim 12, further comprising using a programmed computer graphics system to generate an image having a selected perspective in response to the spherical image data set.

19. The method as set forth in claim 12, where in the capturing is performed using a single wide-angle lens.

20. The method as set forth in claim 12, wherein the capturing is performed by taking at least two respective shots with a single camera with each respective shot being precisely registered with respect to the previously-taken shot.