System and method for minimizing the amount of data necessary to create a virtual three-dimensional environment

• US 20050128212A1
• Filed: 09/15/2004
• Published: 06/16/2005
• Est. Priority Date: 03/06/2003
• Status: Abandoned Application

• Current Assignee: Xdyne, Inc.
• Original Assignee: Xdyne, Inc.
• Inventors: Siyanko, Alex, Edecker, Ada Mae, Syomik, Anatoly
• Application Number:
  US10/943,041
• Publication Number:
  US 20050128212A1
• Time in Patent Office: Days
• US Class Current: 345/582
• CPC Class Codes: G06T 15/04 Texture mapping
• CPC Class Codes: G06T 17/05 Geographic models

Abstract

A system and method for minimizing the amount of photographic data to be collected to reconstruct a model of a three-dimensional object such as a building. In one embodiment a systematic process is used to collect survey and detailed photographic data from designated facades and architectural components of the facades to be processed into graphical tiles. The graphical tiles are textured or coated onto a three-dimensional wireframe model of the building. In one embodiment, the amount of photographic data to be collected is based on the footprint of the building, the height of the building and the number of unique facades and architectural details on the facades. In one embodiment, photographic data of the objects surrounding the building is also collected for modeling with the building. The virtual three-dimensional building models can be incorporated into the virtual three-dimensional city model which is a realistically accurate depiction of a city environment including all the details of an actual city.

Claims

1. A computer implemented virtual model of an actual city, comprising:

data representing a plurality of actual city elements, wherein said data includes photographic data collected for at least one actual city element, said photographic data including;

(a) survey photographic data of each representative surface of the actual city element, wherein said representative surface includes at least one detail unique to said representative surface, and

(b) detailed photographic data of each representative detail unique to said representative surface of the actual city element wherein said detailed photographic data is adapted to be duplicated;

a plurality of virtual city elements, wherein the virtual city elements include three-dimensional representations of actual city elements constructed from said survey photographic data and detailed photographic data; and

an executable version of the virtual city elements on a storage medium.

2. The virtual city model of claim 1, wherein the actual city is selected from the group consisting of:

a real city, a real town, a real village, a real province, a real county, a real state, a real country, a real ward, a real community, a real university campus, and a real college campus.

3. The virtual city model of claim 1, wherein the actual city elements are selected from the group consisting of:

buildings, facilities, and objects.

4. The virtual city model of claim 3, wherein the buildings are selected from the group consisting of skyscrapers, towers, temples, churches, halls, apartments, house, condominiums, theaters, libraries and museums.

5. The virtual city model of claim 3, wherein the facilities are selected from the group consisting of plazas, squares, convention centers, convocation centers, stadiums and arenas, airports, train stations, bus depots and taxi stands.

6. The virtual city model of claim 1, wherein the representative surface of the actual city element represents a plurality of substantially similar surfaces.

7. The virtual city model of claim 1, wherein the representative detail unique to said representative surface represents a plurality of substantially similar details.

8. The virtual city model of claim 1, wherein the photographic data of each representative surface of the actual city element is collected from different views.

9. The virtual city model of claim 1, wherein the photographic data of each representative detail associated with at least one surface of the actual city element is collected from different views.

10. The virtual city model of claim 1, wherein the amount of photographic data necessary to be collected to produce a virtual three-dimensional model of the city element for a virtual three-dimensional city is minimized by collecting photographic data of at least one representative surface and at least one representative detail of the city element and duplicating said representative surface and representative detail, if necessary, to correspond to each surface and each detail of the city element.

11. A method of creating a computer-implemented virtual city model of an actual city, the method comprising:

collecting information relating to at least one actual city element, wherein collecting said information includes;

i. collecting survey photographic data of each representative surface of the actual city element, wherein said representative surface includes at least one detail unique to said representative surface,

ii. collecting detailed photographic data of each representative detail unique to said representative surface of the actual city element

creating a virtual three-dimensional model of the actual city element based on the photographic data wherein said virtual, three-dimensional model includes surfaces corresponding to each surface of the actual city element;

adapting the photographic data of each representative surface of the actual city element;

applying to each of the surfaces of the virtual three-dimensional model the adapted photographic data corresponding to each surface of the actual city element;

generating an executable version of the virtual city model based on said information; and

storing said generated executable version of the virtual city model on a storage medium.

12. The method of claim 11, wherein the actual city element includes a structure.

13. The method of claim 12, wherein the structure includes a building.

14. The method of claim 12, wherein the surface of the actual city element includes a wall of the structure.

15. The method of claim 11, which includes collecting photographic data of each representative surface of the actual city element from a plurality of different views.

16. The method of claim 11, which includes collecting photographic data of each representative detail associated with at least one surface of the actual city element from a plurality of different views.

17. The method of claim 11, wherein at least one view is elevated.

18. The method of claim 11, which includes planning the collection of the photographic data of the actual city element based on an analysis of said element.

19. The method of claim 18, wherein planning the collection of the photographic data of the actual city element includes determining a position from which the photographic data is collected.

20. The method of claim 18, wherein planning the collection of the photographic data of the actual city element includes documenting a description of each of the photographic data.

21. The method of claim 11, wherein adapting the photographic data of each object surface includes at least one of the transformations selected from the group consisting of:

adjusting a perspective of said photographic data, excluding a portion of said photographic data, adjusting a level of contrast of said photographic data, and adjusting a level of brightness of said photographic data.

22. The method of claim 11, which includes creating a graphical tile texture based on the detailed photographic data of at least one representative surface of the actual city element.

23. The method of claim 22, which includes duplicating the graphical tile texture to be applied to at least one surface of the virtual three-dimensional model of the actual city element corresponding to each surface of the actual city element.

24. The method of claim 11, which includes creating a computer-implemented virtual city model of an actual city in a software product.

25. The method of claim 24, which includes continuing to create the computer-implemented virtual city model of the actual city in the software product.

26. The method of claim 11, which includes minimizing the amount of photographic data necessary to be collected to produce a virtual three-dimensional model of the actual city element for a virtual three-dimensional city by collecting photographic data of representative surfaces and representative details of the city element and duplicating said representative surfaces and representative details, if necessary, to correspond to each surface and each detail of the actual city element.

27. A method of minimizing the amount of photographic data necessary to be collected to produce a virtual three-dimensional model of an actual object in an actual city, said method comprising:

collecting photographic data of the actual object from at least one view for each different surface of the object; and

collecting photographic data of the actual object from at least one view of each different element associated with at least one surface of the object.

28. The method of claim 27, wherein at least one different element is repeated on at least one surface of the object.

29. The method of claim 27, wherein the element includes a three-dimensional object.

30. The method of claim 27, which includes transforming the photographic data of each object.

31. The method of claim 27, wherein transforming the photographic data of each object surface includes at least one of the transformations selected from the group consisting of:

adjusting the perspective angle of said photographic data, excluding a portion of said photographic data, adjusting a level of contrast of said photographic data, and adjusting a level of brightness of said photographic data.

32. The method of claim 27, which includes duplicating the photographic data to be applied to each surface of the virtual three-dimensional model corresponding to each surface of said actual object.

33. The method of claim 27, which includes applying photographic data of each surface of the actual object to each surface of the model corresponding to each surface of the actual object.

34. The method of claim 27, which includes storing the photographic data in a database.

35. A method of creating a virtual model of a three-dimensional object, said method comprising:

a. planning a strategy of collecting photographic data of an object based on a shape of the object;

b. collecting the photographic data, wherein the photographic data includes each different surface of the object and each different element associated with each different surface of said object;

c. documenting a description of the photographic data;

d. creating a virtual three-dimensional model of the geometrical shape of each surface of the object based on at least one of the photographic data, said model including at least one model surface;

e. adapting the photographic data of at least one surface of the object; and

f. applying to each model surface the adapted photographic data corresponding to said surface of the object.

36. The method of claim 35, wherein the object includes a building.

37. The method of claim 35, wherein the strategy of collecting photographic date includes identifying at least one shooting position from which the photographic data is collected.

38. The method of claim 35, wherein documenting the description of the photographic data includes entering said description in at least one log.

39. The method of claim 35, wherein the virtual model of the object includes a plurality of surfaces interconnected by a plurality of straight lines spaced in proportion to the geometric shape of the actual object.

40. The method of claim 35, which includes storing the photographic data electronically.

41. The method of claim 35, wherein adapting the photographic data includes duplicating said photographic data to correspond to each duplicated surface of the object.