3D LINE OF SIGHT (LOS) ANALYSIS OF 3D VERTICAL BARRIERS IN 3D VIRTUAL REALITY ENVIRONMENTS

• US 20080122834A1
• Filed: 11/28/2006
• Published: 05/29/2008
• Est. Priority Date: 11/28/2006
• Status: Abandoned Application

• Current Assignee: DefenSoft Planning Systems Ltd.
• Original Assignee: DefenSoft Planning Systems Ltd.
• Inventors: Ouzana, Dror
• Application Number:
  US11/563,744
• Publication Number:
  US 20080122834A1
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G06T 15/06 Ray-tracing
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics

Abstract

A method for 3D line-of-sight (LOS) visualization in a user interactive 3D virtual reality environment includes the following steps: a) displaying a 3D virtual reality scene; b) determining a 3D LOS between a pair of user determined spaced apart nodes placed on the 3D virtual reality scene, wherein the 3D LOS includes at least one unobstructed 3D LOS segment; and c) displaying the at least one unobstructed 3D LOS segment on the 3D virtual reality scene.

Claims

1. Method for 3D line-of-sight (LOS) analysis of vertical barriers in a 3D virtual reality environment comprising the steps of:

(a) selecting a 3D virtual reality scene;

(b) locating a 3D vertical barrier on the 3D virtual reality scene;

(c) locating at least one 3D point of interest on the 3D virtual reality scene on one side of the 3D vertical barrier;

(d) locating at least one 3D point of interest on the 3D virtual reality scene on the other side of the 3D vertical barrier;

(e) determining lines of sight between pairs of 3D points of interest on opposite sides of the 3D vertical barrier;

(f) determining 3D intersection points between 3D lines of sight with the 3D vertical barrier, if any; and

(g) outputting information regarding the design of the 3D vertical barrier.

2. The method according to claim 1 and further comprising the steps of entering information for determining the start point and end point of each segment of a 3D vertical barrier including at least two segments.

3. The method according to claim 1 and further comprising the step of entering a height increment to increase the height coordinate of a 3D point of interest with respect to its nominal height coordinate on the 3D virtual reality scene.

4. The method according to claim 1 and further comprising the step of entering a height restriction applicable to at least one segment of a 3D vertical barrier including at least two segments.

5. The method according to claim 1 and further comprising the step of entering a maximum distance of a 3D LOS between a pair of 3D points of interest on opposite sides of a 3D vertical barrier for discarding 3D lines of sight having actual distances at least equal to the maximum distance.

6. The method according to claim 1 and further comprising the step of outputting a vertical boundary of a 3D vertical barrier.

7. The method according to claim 1 and further comprising the step of outputting the Cartesian coordinates of the pairs of 3D points of interest on opposite sides of a 3D vertical barrier determining a vertical boundary of the 3D vertical barrier.

8. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to execute the steps comprising of:

(a) enabling a user to select a 3D virtual reality scene;

(b) enabling a user to locate a 3D vertical barrier on the 3D virtual reality scene;

(c) enabling a user to locate at least one 3D point of interest on the 3D virtual reality scene on one side of the 3D vertical barrier;

(d) enabling a user to locate at least, one 3D point of interest on the 3D virtual reality scene on the other side of the 3D vertical barrier;

(e) determining lines of sight between pairs of 3D points of interest on opposite sides of the 3D vertical barrier;

(f) determining 3D intersection points between 3D lines of sight with the 3D vertical barrier, if any; and

(g) outputting information regarding the design of the 3D vertical barrier.

9. The medium according to claim 8 and further enabling a user to enter information for determining the start point and end point of each segment of a 3D vertical barrier including at least two segments.

10. The medium according to claim 8 and further enabling a user to enter a height increment to increase the height coordinate of a 3D point of interest with respect to its nominal height coordinate on the 3D virtual reality scene.

11. The medium according to claim 8 and further enabling a user to enter a height restriction applicable to at least one segment of a 3D vertical barrier including at least one segment.

12. The medium according to claim 8 and further enabling a user to enter a maximum distance of a 3D LOS between a pair of 3D points of interest on opposite sides of a 3D vertical barrier for discarding 3D lines of sight having actual distances at least equal to the maximum distance.

13. The medium according to claim 8 and further comprising the step of outputting a vertical boundary of a 3D vertical barrier.

14. The medium according to claim 8 and further comprising the step of outputting the Cartesian coordinates of the pairs of 3D points of interest on opposite sides of a 3D vertical barrier determining a vertical boundary of the 3D vertical barrier.

15. Apparatus for 3D line-of-sight (LOS) analysis of vertical barriers in a 3D virtual reality environment comprising:

(a) means for selecting a 3D virtual reality scene;

(b) means for locating a 3D vertical barrier on the 3D virtual reality scene;

(c) means for locating at least one point of interest on the 3D virtual reality scene on one side of the 3D vertical barrier;

(d) means for locating at least one point of interest on the 3D virtual reality scene on the other side of the 3D vertical barrier;

(e) means for determining lines of sight between pairs of points of interest on opposite sides of the 3D vertical barrier;

(f) means for determining intersection points between lines of sight with the 3D vertical barrier, if any; and

(g) means for outputting information regarding the design of the 3D vertical barrier.

16. The apparatus according to claim 15 and further comprising means for entering information for determining the start point and end point of each segment of a 3D vertical barrier including at least two segments.

17. The apparatus according to claim 15 and further comprising means for entering a height increment to increase the height coordinate of a point of interest with respect to its nominal height coordinate on the 3D virtual reality scene.

18. The apparatus according to claim 15 and further comprising means for entering a height restriction applicable to at least one segment of a 3D vertical barrier including at least one segment.

19. The apparatus according to claim 15 and further comprising means for entering a maximum distance of a 3D LOS between a pair of 3D points of interest on opposite sides of a 3D vertical barrier for discarding 3D lines of sight having actual distances at least equal to the maximum distance.

20. The apparatus according to claim 15 and further comprising means for outputting a vertical boundary of a 3D vertical barrier.

21. The apparatus according to claim 15 and further comprising means for outputting the Cartesian coordinates of the pairs of 3D points of interest on opposite sides of a 3D vertical barrier determining a vertical boundary of the 3D vertical barrier.