Method of and apparatus for performing perspective transformation of visible stimuli

• US 6,731,284 B1
• Filed: 10/02/2000
• Issued: 05/04/2004
• Est. Priority Date: 12/14/1992
• Status: Expired due to Fees

• Current Assignee: Grandeye Limited (Oncam Global Group AG)
• Original Assignee: HALO Vision Limited
• Inventors: Oxaal, Ford
• Primary Examiner(s): Jankus, Almis R.
• Application Number:
  US09/676,079
• Time in Patent Office: 1,310 Days
• Field of Search: 345/419, 345/423, 345/427, 345/620, 345/626, 345/627, 348/38, 348/39, 348/264, 348/383, 348/744, 348/776, 352/70, 353/82, 359/363, 396/20
• US Class Current: 345/427
• CPC Class Codes: G06T 15/20 Perspective computation
• CPC Class Codes: G06T 3/12 Panospheric to cylindrical image transformations

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 depict visual shape. In particular, the present invention either transforms a first visible configuration to a second 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 transform 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 for acquisition of a substantially seamless spherical data set and display of user selected portions thereof, comprising:

capturing at least two circular images from a single point and different directions of view;

transferring the circular images to a memory of a computer;

combining the circular images into a substantially seamless spherical data set; and

displaying a user-selected portion of substantially seamless spherical data set on a display of the computer.

2. The method as set forth in claim 1, further comprising digitizing each of the circular images, wherein the digitizing is performed prior to transferring the substantially seamless spherical data set to the memory.

3. The method as set forth in claim 1, wherein the capturing is performed using a single wide-angle lens.

4. The method as set forth in claim 1, wherein the capturing is performed by taking at least two respective shots with a single claim camera with each respective shot being precisely registered with respect to the previously-taken shot.

5. The method as recited in claim 1, wherein the user-selected portion of the substantially seamless spherical data set includes data from two adjacent circular images.

6. The method as recited in claim 1, wherein the displaying step comprises displaying the user-selected portion of the substantially seamless spherical data set as a rectangular image on the display of the computer.

7. The method as recited in claim 1, wherein the displaying step comprises displaying the entire substantially seamless spherical data set as a rectangular image on the display of the computer.

8. The method as recited in claim 1, wherein the displaying step comprises displaying the user-selected portion of the subsequently seamless spherical data set in circular perspective on the display of the computer.

9. The method as recited in claim 1, further comprising the step of selecting a magnification level at which user-selected potion of the substantially seamless spherical data set is to be displayed on the display.

10. The method as recited in claim 1, wherein combining step is performed using software to digitally stitch together the at least two respective digital images.

11. A method for acquiring image content corresponding to all pixels visible from a predetermined point using a camera generating circular images, for processing the content into a substantially seamless spherical data set, and displaying user-selected portions of the substantially seamless spherical data set, the method comprising the steps of:

acquiring N circular images from the predetermined point and different directions of view;

transferring the N circular images to a memory;

combining the N circular images into the substantially seamless spherical data set; and

displaying a user-selected portion of the substantially seamless data set on a display of the computer,

where N is an integer greater than or equal to two.

12. The method as set forth in claim 11, further comprising digitizing each of the circular images, wherein the digitizing is performed prior to transferring the substantially seamless spherical data set to the memory.

13. The method as set forth in claim 11, wherein:

the acquiring and transferring steps are performed seriatim by a digital camera as each of the respective N circular images is taken, and

the combining step is performed by a computer electrically coupled to the digital camera; and

the user-selected portion of the substantially seamless spherical data set is determined by user operation of an input device.

14. The method as set forth in claim 11, 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.

15. The method as recited in claim 11, wherein the user-selected portion of the substantially seamless spherical data set includes data from two adjacent circular images.

16. The method as recited in claim 11, wherein the displaying step comprises displaying the user-selected portion of the substantially seamless spherical data set as a rectangular image on the display of the computer.

17. The method as recited in claim 11, wherein the displaying step comprises displaying the entire substantially seamless spherical data set as a rectangular image on the display of the computer.

18. The method as recited in claim 11, wherein the displaying step comprises displaying the user-selected portion of the substantially seamless spherical data set in circular perspective on the display of the computer.

19. The method as recited in claim 11, further comprising the step of selecting a magnificant level at which user-selected potion of the substantially seamless spherical data set is to be displayed on the display.

20. The method as recited in claim 11, wherein combining step is performed using software to digitally stitch together the at least two respective digital images.

21. A method comprising:

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

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

wherein the combining is performed by;

digitizing the at least two images to create at least two respective digital image; and

then

using software to digitally stitch together the at least two respective digital images.

22. A method comprising:

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

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

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 image contained in any two of the least two respective digital images.

23. 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 single point and at least two respective directions of view, in such a manner as to generate a substantially spherical image data set; and

using the programmed computer to display a user-selected portion of the substantially seamless spherical image data set on a display device.

24. The method as set forth in claim 23, wherein the user-selected portion of the spherical substantially image data set displayed on the display device is a rectangular image.

25. The method as set forth in claim 24, wherein the second using step is repeated a plurality of times so as to generate a sequence of rectangular images on the display device.

26. A method comprising:

capturing at least two images from a single 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.

27. The method as set forth in claim 26, further comprising displaying a magnified portion of the spherical image data set.

28. The method as set forth in claim 26, further comprising using a programmed computer graphics system to generate an image having a selected perspective in response to the spherical image data set.

29. The method as set forth in claim 26, 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.