System and method for providing synthetic information on a see-through device

1. A system for displaying a combined image data from a plurality of sources on a head-mounted see-through display (HMSTD) defining a line of sight (LOS), the system comprising:

a tracker configured to track the LOS of the HMSTD;

a display controller configured to display on the HMSTD a first display area comprising a synthetic image data conformal to a scene viewed from the HMSTD;

a trigger mechanism configured to select a desired point being a point within the scene which intersects the LOS of the HMSTD at a time of a triggering event,

wherein said display controller is configured to receive said desired point and to display a second display area on said HMSTD, wherein the second display area is positioned relative to said desired point,

wherein said display controller is further configured to perform alteration to the synthetic image data in a portion of the first display area covered by the second display area, and

wherein said alteration is a reduction in intensity of the synthetic image data.

2. The system of claim 1 , wherein said alteration includes a projection of at least one sensor data.

3. The system of claim 2 , wherein said sensor data is derived from a remote sensor.

4. The system of claim 1 , wherein said desired point indicates a second display area properties.

5. The system of claim 4 , wherein said second display area properties are defined based on predefined rules selected from at least one of: size, shape, location relative to said desired point, number of desired points needed in order to generate said second display area, priority of other data sources.

6. The system of claim 1 , wherein said second display area is locked to a spatial location in an earth coordinate system of reference based on said desired point.

7. The system of claim 1 , wherein said second display area follows said line of sight and changes its position accordingly.

8. The system of claim 1 , wherein said trigger mechanism indicating said desired point on said scene is based on at least said HMSTD line of sight and said triggering event.

9. The system of claim 8 , wherein said triggering event is one of:

Voice command;

Time threshold;

Tactile event;

Image correlation; and

Predefined geo-location.

10. The system of claim 9 , wherein said time threshold indicates if said HMSTD line of sight is continuously designating one desired point above a predetermined time duration.

11. The system of claim 1 , wherein said tracker is further configured to track line of sight of said HMSTD with respect to an earth coordinate system.

12. The system of claim 1 , wherein said desired point is an intersection of said HMSTD line of sight in said earth coordinate system and a terrain elevation map.

13. The system of claim 1 , wherein said display controller is further adapted to display said desired point on said HMSTD as synthetic symbol overlaid on said scene.

14. The system of claim 1 , wherein said second display area is adjusted corresponding to a vector indicating the heading of the HMSTD.

15. The system of claim 2 , wherein said sensor data is rendered to HMSTD line of sight perspective before display in said second display area.

16. The system of claim 1 , wherein said HMSTD line of sight is further configured to indicate an object inside said second display area, wherein said display controller is further configured to display said object as a synthetic data in said second display area.

17. The system of claim 2 , is further configured to search and find the said at least one sensor data most suitable for said desired point.

18. The system of claim 17 , wherein said most suitable sensor data is elected corresponding to at least one of: sensor position, sensor properties, sensor coverage, target properties, own platform location, spatial relation between platform and remote sensor, sensor time over target.

19. A method for displaying a combined image data sources on a head-mounted see through display (HMSTD) to be controlled by a line of sight (LOS) of said HMSTD, the method comprising:

tracking the LOS of said HMSTD;

receiving a synthetic image data related to a scene observable to a user of said HMSTD;

displaying in a first display area said synthetic image data on said HMSTD to be overlaid conformal on said outside scene;

determining a desired point being a point in said outside scene which intersects said LOS of said HMSTD at a time of a triggering event;

determining a second display area on said HMSTD relative to said desired point; and

altering the synthetic data in a portion of said first display area covered by the second display area;

wherein the altering is a reduction in intensity of the synthetic image data.