Information display by overlay on an object

1. A method for display in a computer system, the method comprising:

detecting an object in a field-of-view (FOV) using at least one sensor coupled to the computer system;

determining a shape of the object using a processor of the computer system;

creating an overlay element having the shape of the object and a changeable characteristic;

obtaining a value of a parameter, wherein the parameter is related to a temperature of the object, a pressure in the object, a hazard level of the object, an expected time remaining to an action by the object, or a fuel level of the object;

rendering a representation of the overlay element with the changeable characteristic set based on the value of the parameter; and

presenting the representation of the overlay element on a display of the computer system to at least partially occlude the object.

2. The method of claim 1 , wherein the value of the parameter is related to the temperature of the object.

3. The method of claim 1 , wherein the value of the parameter is related to the pressure in the object.

4. The method of claim 1 , wherein the value of the parameter is related to the hazard level of the object.

5. The method of claim 1 , wherein the value of the parameter is related to the expected time remaining to an action by the object.

6. The method of claim 1 , wherein the value of the parameter is related to the fuel level of the object.

7. The method of claim 1 , wherein the display of the computer system comprises a head-mounted display (HMD) and at least a portion of the FOV is visible to a user through a transparent portion of the HMD.

8. The method of claim 1 , wherein the object comprises a plurality of items in the FOV and the shape of the object is a convex polygon with a shortest perimeter encompassing individual shapes of the plurality of items.

9. The method of claim 1 , further comprising:

obtaining a series of values of the parameter over a period of time, the series of values including said value;

tracking positions and shapes of the object over the period of time in the FOV; and

rendering multiple representations of the overlay element with the changeable characteristic changed based on the series of values of the parameter and shapes of the object over the period of time;

serially presenting the multiple representations of the overlay element over the period of time on the display of the computer system using the positions of the object over the period of time to determine positions for the multiple representations of the overlay element on the display over the period of time.

10. The method of claim 1 , wherein the changeable characteristic comprises a transparency or a fill amount.

11. The method of claim 1 , wherein the changeable characteristic comprises a color or a rate of a pulsating effect.

12. The method of claim 1 , further comprising:

determining a range of distances to portions of the object; and

filling portions of the overlay element based on both a distance to a corresponding portion of the object as a percentage of the range of distances and a value of the series values of the parameter to create a three-dimensional fill of the overlay element.

13. A method for display in a computer system, the method comprising:

detecting an object in a field-of-view (FOV) using at least one sensor coupled to the computer system;

determining a shape of the object using a processor of the computer system;

creating an overlay element having the shape of the object and a changeable characteristic;

obtaining a value of a parameter, wherein the parameter is related to an attribute of an ambient environment shown in the FOV;

rendering a representation of the overlay element with the changeable characteristic set based on the value of the parameter; and

presenting the representation of the overlay element on a display of the computer system to at least partially occlude the object.

14. The method of claim 13 , wherein the attribute of the ambient environment is not determined by an attribute of the object.

15. The method of claim 13 , wherein the display of the computer system comprises a head-mounted display (HMD) and at least a portion of the FOV is visible to a user through a transparent portion of the HMD.

16. The method of claim 13 , further comprising:

obtaining a series of values of the parameter over a period of time, the series of values including said value;

tracking positions and shapes of the object over the period of time in the FOV; and

rendering multiple representations of the overlay element with the changeable characteristic changed based on the series of values of the parameter and shapes of the object over the period of time;

serially presenting the multiple representations of the overlay element over the period of time on the display of the computer system using the positions of the object over the period of time to determine positions for the multiple representations of the overlay element on the display over the period of time.

17. The method of claim 13 , wherein the changeable characteristic comprises a color.

18. The method of claim 13 , wherein the changeable characteristic comprises a transparency.

19. The method of claim 13 , wherein the changeable characteristic comprises a fill amount.

20. The method of claim 13 , wherein the changeable characteristic comprises a rate of a pulsating effect.