Augmented reality situational awareness system and method

• US 20030210228A1
• Filed: 03/31/2003
• Published: 11/13/2003
• Est. Priority Date: 02/25/2000
• Status: Abandoned Application

• Current Assignee: Information Decision Technologies LLC
• Original Assignee: Information Decision Technologies LLC
• Inventors: Ebersole, John Franklin, Ebersole, John Franklin Jr.
• Application Number:
  US10/403,249
• Publication Number:
  US 20030210228A1
• Time in Patent Office: Days
• US Class Current: 345/157
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06F 3/012 Head tracking input arrangements
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2340/12 Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
• CPC Class Codes: G09G 2380/12 Avionics applications

Abstract

Method and apparatus are presented for prioritizing and assessing navigation data using an Augmented Reality navigation aid. Navigators are often placed in treacherous, unfamiliar, or low-visibility situations. An augmented reality navigation aid is used to overlay relevant computer-generated images, which are anchored to real-world locations of hazards, onto one or more users'"'"' field of view. Areas of safe passage for transportation platforms such as ships, land vehicles, and aircraft can be displayed via computer-generated imagery or inferred from various attributes of the computer-generated display. The invention is applicable to waterway navigation, land navigation, and to aircraft navigation (for aircraft approaching runways or terrain in low visibility situations). A waterway embodiment of the invention is called WARN™, or Waterway Augmented Reality Navigation™.

A method is presented for visualization of hazards which pose a serious threat to those in the immediate vicinity. Such hazards include, but are not limited to, fire, smoke, radiation, and invisible gasses. The method utilizes augmented reality, which is defined as the mixing of real world imagery with computer-generated graphical elements.

Computer-generated three-dimensional representations of hazards can be used in training and operations of emergency first responders and others. The representations can be used to show the locations and actions of a variety of dangers, real or computer-generated, perceived or not perceived, in training or operations settings. The representations, which may be graphic, iconic, or textual, are overlaid onto a view of the user'"'"'s real world, thus providing a reality augmented with computer-generated hazards. A user can then implement procedures (training and operational) appropriate to the hazard at hand.

A method is presented which uses Augmented Reality for visualization of text and other messages sent to an EFR by an incident commander. The messages are transmitted by the incident commander via a computer at the scene to an EFR/trainee in an operational or training scenario. Messages to an EFR/trainee, including (but not limited to) iconic representation of hazards, victims, structural data, environmental conditions, and exit directions/locations, are superimposed right onto an EFR/trainee'"'"'s view of the real emergency/fire and structural surroundings. The primary intended applications are for improved safety for the EFR, and improved EFR-incident commander communications both on-scene and in training scenarios.

Claims

1. A method of using an augmented reality navigation system on a moving transportation platform selected from the group of transportation platforms consisting of a water transportation device such as a ship, a land transportation device such as a motor vehicle, and an air transportation device such as an airplane, to prioritize and assess navigation data, comprising:

obtaining navigation information relating to the transportation platform;

providing a display unit that provides the user with a view of the real world;

creating a virtual imagery graphical overlay of relevant navigation information corresponding to the user'"'"'s field of view, the graphical overlay created using graphics technology that reduces cognitive load, including using color schemes as a way of assisting the user in prioritizing the information on the display unit, and presenting data using a predictor display which displays to the user where the transportation platform will be in the near future; and

displaying the graphical overlay in the display unit, so that the user sees an augmented reality view comprising both the real world and the graphical overlay.

2. The method of claim 1 in which the navigation information includes digital navigation charts.

3. The method of claim 1 in which the navigation information includes information from a radar system.

4. The method of claim 1 in which the navigation information includes the platform'"'"'s distance from hazards.

5. The method of claim 1 in which the navigation information includes water depth.

6. The method of claim 1 in which navigation information is displayed as a semi-transparent or fuzzy (soft-bordered) graphic.

7. The method of claim 1 applied to waterway navigation.

8. The method of claim 1 in which the graphics technology that reduces cognitive load comprises displaying 2-D navigation chart information in a 3-D Augmented Reality environment.

9. The method of claim 1 in which the virtual imagery graphical overlay includes the superposition of virtual buoys onto the field of view of the user to indicate the location of real buoys that are obscured from sight.

10. The method of claim 1 in which the virtual imagery graphical overlay includes the superposition of virtual buoys onto the field of view of the user to provide the functionality of real buoys, when real buoys are not present.

11. The method of claim 1 in which a user is trained in performing navigational duties by showing virtual hazards to the user while in a real navigational platform in a real environment.

12. The method of claim 1 in which color is used to represent water depth.

13. The method of claim 1 in which the predictor display alerts the navigator to potential collisions.

14. A method of augmented reality visualization of hazards, comprising:

providing a display unit for the user;

providing motion tracking hardware;

using the motion tracking hardware to determine the location and direction of the viewpoint to which the computer-generated three-dimensional graphical elements are being rendered;

providing an image or view of the real world;

using a computer to generate three-dimensional graphical elements as representations of hazards;

rendering the computer-generated graphical elements to correspond to the user'"'"'s viewpoint;

creating for the user a mixed view comprised of an actual view of the real world as it appears in front of the user, where graphical elements can be placed anywhere in the real world and remain anchored to that place in the real world regardless of the direction in which the user is looking, wherein the rendered graphical elements are superimposed on the actual view, to accomplish an augmented reality view of representations of hazards in the real world; and

presenting the augmented reality view, via the display unit, to the user.

15. The method of claim 14 in which the representations are objects that appear to be emanating out of the ground.

16. The method of claim 14 in which the rendered computer-generated three-dimensional graphical elements are representations displaying an image property selected from the group of properties consisting of fuzziness, fading, transparency, and blending, to represent the intensity, spatial extent, and edges of at least one hazard.

17. The method of claim 14 in which the display device is integrated into a hand held device selected from the group of devices consisting of a Thermal Imager, a Navy Firefighter'"'"'s Thermal Imager (NFTI), and a Geiger counter.

18. The method of claim 14 in which a graphical element is used to represent harmful hazards that are located in an area, the harmful hazard selected from the group of hazards consisting of a fire, a bomb, a radiation leak, a chemical spill, and poison gas.

19. The method of claim 14 in which a user can see a display of the paths of other users taken through the space.

20. A method of accomplishing an augmented reality hazard visualization system for a user, comprising:

providing a display unit;

providing the user with a hazardous phenomena cleanup device;

providing motion tracking hardware, and attaching it to both the head-worn display unit and the hazardous phenomena cleanup device;

using the motion tracking hardware that is attached to the head worn unit and to determine the location and direction of the viewpoint of the head-worn display unit;

using the motion tracking hardware that is attached to the hazardous phenomena cleanup device to determine the location and direction of the aimpoint of the hazardous phenomena cleanup device;

determining the operating state of the hazardous phenomena cleanup device;

using a computer to generate graphical representations comprising simulated potentially hazardous phenomena, and simulated application of hazardous phenomena cleanup agent, showing the cleanup agent itself emanating directly from the hazardous phenomena cleanup device, and showing the interaction of the cleanup agent with the hazardous phenomena;

rendering the generated graphical elements to correspond to the user'"'"'s viewpoint; and

creating for the user a mixed view comprised of an actual view of the real world as it appears in front of the user, where graphical elements can be placed any place in the real world and remain anchored to that place in the real world regardless of the direction in which the user is looking, wherein the rendered graphical elements are superimposed on the actual view, to accomplish an augmented reality view of potentially hazardous phenomena in the real world, the application of cleanup agent to the hazardous phenomena, and the effect of cleanup agent on the hazardous phenomena.