Virtual reality imaging system

• US 5,432,895 A
• Filed: 10/01/1992
• Issued: 07/11/1995
• Est. Priority Date: 10/01/1992
• Status: Expired due to Term

• Current Assignee: University Corporation For Atmospheric Research
• Original Assignee: University Corporation For Atmospheric Research
• Inventors: Myers, William L.
• Primary Examiner(s): Powell, Mark R.
• Assistant Examiner(s): HUYNH, BA
• Application Number:
  US07/955,309
• Time in Patent Office: 1,013 Days
• Field of Search: 395/119-139, 395/152, 395/155, 395/161, 395/118, 395/154
• US Class Current: 345/419
• CPC Class Codes: G06T 15/10 Geometric effects

Abstract

The virtual reality imaging system takes a multidimensional space that contains real world objects and phenomena, be they static or dynamic in nature, and enables a user to define a point and/or a path through this multidimensional space. The apparatus then displays the view to the user that would be seen from the point and/or path through the multidimensional space. This view is filtered through user definable characteristics that refine the real world phenomena and objects to a perspective that is of interest to the user. This filtered view presents the user with a virtual view of the reality contained within this multidimensional space, which virtual reality presents data to the user of only objects, views and phenomena that are of particular interest to the user.

Claims

1. Apparatus for presenting a user with a virtual image in real time of phenomena located in a predefined multidimensional space, comprising:

means for generating data, in real time, indicative of at least one phenomena extant in a multidimensional space and traversing said multidimensional space which multidimensional space has predefined extent in a plurality of dimensions, comprising;

means for measuring present values of a plurality of parameters for at least one temporally variant phenomena extant in said multidimensional space;

means for storing data defining a plurality of characteristics of said phenomena that are to be displayed to a user;

means for filtering said generated data to extract data that satisfies said plurality of characteristics, defined by said stored data, from said generated data, comprising;

means for storing data indicative of a predefined point in said multidimensional space;

means for storing data indicative of a field of view from said predefined pointing said multidimensional space;

means, responsive to said stored predefined point and field of view data for defining a segment of said multidimensional space representative of said field of view as taken from said predefined point;

means for identifying a portion of any of said phenomena that lie within said segment of said multidimensional space; and

means, responsive to said extracted data, for producing an image representative of a three dimensional view of at least a portion of said multidimensional space to display said phenomena, substantially temporally concurrent with the generation of said data indicative of said at least one phenomena extant in a multidimensional space and used to produce said image.

2. The apparatus of claim 1 wherein said generating means comprises:

means for displaying said plurality of characteristics of said portion of said phenomena included in said segment of said multidimensional space.

3. The apparatus of claim 2 wherein said extracting means further comprises:

means for defining a motion vector through said multidimensional space from said predefined point to a termination point;

means for defining a sampling interval;

means, responsive to said stored data indicative of said predefined point, said motion vector, said sampling interval and said field of view, for defining a plurality of segments of said multidimensional space representative of said field of view as taken from said predefined point at each of a plurality of successive sample intervals, as said motion vector traverses said multidimensional space from said predefined point to said termination point.

4. The apparatus of claim 3 wherein said generating means further comprises:

means for extrapolating a present one of said measured values of said plurality of parameters for at least one sampling interval into the future from a present sampling interval.

5. The apparatus of claim 4 wherein said means further comprises:

means for defining a sampling interval;

means for extrapolating a present one of said measured values of said plurality of parameters for at least one sampling interval into the future from a present sampling interval;

means, responsive to said stored data indicative of said predefined point, said sampling interval, said measured present values of said plurality of parameters, said extrapolated parameters and said field of view, for displaying said field of view as taken from said predefined point at each of a plurality of successive sample intervals including said present sampling interval and said at least one sampling interval into the future.

6. The apparatus of claim 1 wherein said generating means comprises:

means for measuring a plurality of parameters for at least one temporally invariant phenomena extant in said multidimensional space.

7. The apparatus of claim 1 wherein said generating means comprises:

means for simulating a phenomena in said multidimensional space.

8. A method for presenting a user with a virtual image in real time of phenomena located in a predefined multidimensional space, comprising the steps of:

generating data, in real time, indicative of at least one phenomena extant in a multidimensional space, which multidimensional space has predefined extent in a plurality of dimensions, comprising measuring present values of plurality of parameters for at least one temporally variant phenomena extant in multidimensional space;

storing data defining a plurality of characteristics of said phenomena that are to be displayed to a user;

extracting data that satisfies said plurality of characteristics, defined by said stored data, from said generated data, comprising;

storing data indicative of a predefined point in said multidimensional space;

storing data indicative of a field of view from said predefined point in said multidimensional space;

defining in response to said stored predefined point and field of view data, a segment of said multidimensional space representative of said field of view as taken from said predefined point;

identifying a portion of any of said phenomena that lie within said segment of said multidimensional space; and

producing, in response to said extracted data, an image representative of a three dimensional view of at least a portion of said multidimensional space to display said phenomena, substantially temporally concurrent with the generation of said data indicative of said at least one phenomena extant In a multidimensional space and used to produce said image.

9. The method of claim 8 wherein said step of generating comprises:

displaying said plurality of characteristics of said portion of said phenomena included in said segment of said multidimensional space.

10. The method of claim 8 wherein said step of extracting further comprises:

defining a motion vector through said multidimensional space from said predefined point to a termination point;

defining a sampling interval;

defining, in response to said stored data indicative of said predefined point, said motion vector, said sampling interval and said field of view, a plurality of segments of said multidimensional space representative of said field of view as taken from said predefined point at each of a plurality of successive sample intervals, as said motion vector traverses said multidimensional space from said predefined point to said termination point.

11. The method of claim 10 wherein said step of generating further comprises:

extrapolating said measured present values of said plurality of parameters for at least one sampling interval into the future from a present sampling interval.

12. The method of claim 9 wherein said step of extracting further comprises:

defining a sampling interval;

extrapolating said measured present values of said plurality of parameters for at least one sampling interval into the future from a present sampling interval;

displaying, in response to said stored data indicative of said predefined point, said sampling interval, said measured present values of said plurality of parameters, said extrapolated parameters and said field of view, said field of view as taken from said predefined point at each of a plurality of successive sample intervals including said present sampling interval and said at least one sampling interval into the future.

13. The method of claim 8 wherein said step of generating comprises:

measuring a plurality of parameters for at least one temporally invariant phenomena extant in said multidimensional space.

14. The method of claim 8 wherein said step of generating comprises:

simulating a phenomena in said multidimensional space.

15. Apparatus for presenting a user with a virtual image in real time of meteorological phenomena located in a predefined multidimensional space, comprising:

means for generating data indicative of at least one meteorological phenomena extant in e multidimensional space, which multidimensional space has predefined extent in a plurality of dimensions, comprising;

means for measuring a plurality of parameters for at least one temporally variant meteorological phenomena extant in said multidimensional space,

means for measuring a plurality of parameters for at least one spatial feature extant in said multidimensional space;

means for storing data defining a plurality of characteristics of said meteorological phenomena and spatial features that am to be displayed to a user;

means for storing data indicative of a predefined point in said multidimensional space;

means for storing data indicative of a field of view from said predefined point in said multidimensional space;

means, responsive to said stored predefined point and field of view date, for defining a segment of said multidimensional space representative of said field of view as taken from said predefined point;

means for identifying a portion of any of said meteorological phenomena and spatial features that lie within said segment of said multidimensional space;

means for extracting data that satisfies said plurality of characteristics, defined by said stored dam, from said generated data for any said identified portion of any of said meteorological phenomena and spatial features that lie within said segment of said multidimensional space; and

means for displaying said plurality of characteristics of said meteorological phenomena and said spatial features inclusive in said segment of said multidimensional space, substantially temporally concurrent with the generation of said data indicative of said meteorological phenomena extant in a multidimensional space and used to produce said image.

16. The apparatus of claim 15 wherein said multidimensional space comprises a volume of airspace, said meteorological phenomena measuring means comprises:

at least one weather data acquisition system for producing data indicative of weather phenomena in said multidimensional space.

17. The apparatus of claim 16 wherein said multidimensional space comprises an airspace, said spatial feature measuring means comprises;

topological data acquisition system for producing data indicative of surface topological features in said multidimensional space.

18. The apparatus of claim 17 wherein said characteristics storing means comprises:

means, responsive to user input data, for defining a set of thresholds indicative of weather phenomena magnitude.

19. The apparatus of claim 18 wherein said predefined point storing means stores data indicative of a position of an aircraft, said field of view storing means stores data indicative of a field of view in the flight path of said aircraft, said displaying means comprises:

means for producing a visual display for a pilot of said aircraft of said weather phenomena exceeding said threshold that are inclusive of said field of view in said flight path of said aircraft.

20. The apparatus of claim 19 wherein said extracting means further comprises:

means for defining a motion vector through said multidimensional space from said predefined point to a termination point;

means for defining a sampling interval;

means, responsive to said stored predefined point, motion vector, sampling interval and field of view data, for defining a plurality of segments of said multidimensional space representative of said field of view as taken from said predefined point at each of a plurality of successive sample intervals, as said motion vector traverses said multidimensional space from said predefined point to said termination point.

21. The apparatus of claim 20 wherein said displaying means comprises:

means for displaying in each said successive sample intervals, said plurality of characteristics of said meteorological phenomena and said multidimensional space inclusive of each said segment of said multidimensional space.

22. The apparatus of claim 21 wherein said generating means comprises:

means for extrapolating a present one of said measured values of said plurality of parameters for at least one interval of time into the future; and

means for displaying said plurality of extrapolated characteristics of said meteorological phenomena and said multidimensional space.

23. The apparatus of claim 20 wherein said extracting means further comprises:

means for defining a sampling interval;

means for extrapolating a present one of said measured values of said plurality of parameters for at least one sampling interval into the future from a present sampling interval;

means, responsive to said stored data indicative of said predefined point, said sampling interval, said measured present values of said plurality of parameters, said extrapolated parameters and said field of view, for displaying said field of view as taken from said predefined point at each of plurality of successive sample intervals including said present sampling interval and said at least one sampling interval into the future.

24. A method for presenting a user with a virtual image in real time of meteorological phenomena located in a predefined multidimensional space, comprising the steps of:

generating data indicative of at least one meteorological phenomena extant in a multidimensional space, which multidimensional space has predefined extent in a plurality of dimensions, comprising;

measuring a plurality of parameters for at least one temporally variant meteorological phenomena extant in said multidimensional space,

measuring a plurality of parameters for at least one spatial feature extant in said multidimensional space;

storing data defining a plurality of characteristics of said meteorological phenomena and spatial features that are to be displayed to a user;

storing data indicative of a predefined point in said multidimensional space;

storing data indicative of a field of view from said predefined point in said multidimensional space;

defining, in response to said stored predefined point and field of view data, a segment of said multidimensional space representative of said field of view as taken from said predefined point; and

identifying a portion of any of said meteorological phenomena and spatial features that lie within said segment of said multidimensional space;

extracting data that satisfies said plurality of characteristics, defined by said stored data, from said generated data for any said identified portion of any of said meteorological phenomena and spatial features that lie within said segment of said multidimensional space;

displaying said plurality of characteristics of said meteorological phenomena and said spatial features inclusive in said segment of said multidirectional space, substantially temporally concurrent with the generation of said data indicative of said meteorological phenomena extant in a multidimensional space end used to produce said image.

25. The method of claim 24 wherein said multidimensional space comprises a volume of airspace, said step of meteorological phenomena measuring comprises producing data indicative of weather phenomena in said multidimensional space using at least one weather data acquisition system.

26. The method of claim 25 wherein said multidimensional space comprises an airspace, said step of spatial feature I measuring comprises producing data indicative of surface topological features in said multidimensional space using a topological data acquisition system.

27. The method of claim 26 wherein said step of characteristics storing comprises:

defining, in response to user input data, a set of thresholds indicative of weather phenomena magnitude.

28. The method of claim 27 wherein said step of predefined point storing stores data indicative of a position of an aircraft, said field of view storing means stores data indicative of a field of view in the flight path of said aircraft, and said step of displaying comprises:

producing a visual display for a pilot of said aircraft of said weather phenomena exceeding said threshold that are inclusive of said field of view in said flight path of said aircraft.

29. The method of claim 28 wherein said step of extracting further comprises:

defining a motion vector through said multidimensional space from said predefined point to a termination point;

defining a sampling interval;

defining, in response to said stored predefined point, motion vector, sampling interval and field of view data, a plurality of segments of said multidimensional space representative of said field of view as taken from said predefined point at each of a plurality of successive sample intervals, as said motion vector traverses said multidimensional space from said predefined point to said termination point.

30. The method of claim 27 wherein said step of displaying comprises:

displaying in each said successive sample intervals, said plurality of characteristics of said meteorological phenomena and said multidimensional space inclusive of each said segment of said multidimensional space.

31. The method of claim 30 wherein said step of generating comprises:

extrapolating a present one of said measured values of said plurality of parameters for at least one interval of time into the future; and

displaying said plurality of extrapolated characteristics of said meteorological phenomena and said multidimensional space.

32. The method of claim 31 wherein said step of extracting further comprises:

defining a sampling interval;

extrapolating a present one of said measured values of said plurality of parameters for at least one sampling interval into the future from a present sampling interval;

displaying, in response to said stored data indicative of said predefined point, said sampling interval, said measured present values of said plurality of parameters, said extrapolated parameters and said field of view, said field of view as taken from said predefined point at each of a plurality of successive sample intervals including said present sampling interval and said at least one sampling interval into the future.