Alignment based view matrix tuning

1. A head-mounted display device for alignment based view matrix tuning comprising:

an at least partially see-through display;

a processor;

a non-volatile storage device holding instructions executable by the processor to:

detect a physical feature having a physical location that is at least a threshold distance away from a rendering focal plane of the head-mounted display device, wherein the physical feature is indicia on a 2D surface of a physical object;

generate an alignment hologram based on the physical feature, wherein the alignment hologram corresponds in shape to the indicia and is programmatically generated for display or pre-stored on the non-volatile storage device and retrieved for display;

determine a view of the alignment hologram based on a default view matrix for a first eye of a user of the head-mounted display device;

display the view of the alignment hologram to the first eye of the user on the at least partially see-through display;

output an instruction to the user to enter an adjustment input to visually align the alignment hologram with the physical feature;

determine a calibrated view matrix based on the default view matrix and the adjustment input; and

adjust a view matrix setting of the head-mounted display device based on the calibrated view matrix.

2. The head-mounted display device of claim 1 , further comprising instructions to:

increase an opacity of a region of the at least partially see-through display corresponding to a second eye of the user, such that the physical feature and the alignment hologram are not viewed by the second eye of the user.

3. The head-mounted display device of claim 1 , wherein the physical feature is an optical tag that is located in a central region of the 2D surface.

4. The head-mounted display device of claim 3 , wherein the physical feature is one of a plurality of physical features, and a second physical feature of the plurality of physical features is a second optical tag that is located in a peripheral region of the 2D surface.

5. The head-mounted display device of claim 1 , wherein the physical feature is a physical object viewed by the head-mounted display device, and the alignment hologram is generated in real time based on a captured image received at an outward facing camera of the head-mounted display device.

6. The head-mounted display device of claim 1 , wherein the threshold distance is between 20-40% of the distance from the head-mounted display device to the rendering focal plane.

7. The head-mounted display device of claim 1 , wherein the adjustment input includes inputs to translate the alignment hologram along one or more of an x, y, or z axis.

8. The head-mounted display device of claim 7 , wherein the adjustment input further includes input to rotate the alignment hologram in one or more of a pitch, yaw, or roll rotation.

9. The head-mounted display device of claim 1 , further comprising instructions to:

determine a second view of the alignment hologram based on a second default view matrix for a second eye of the user of the head-mounted display device;

display the second view of the alignment hologram to the second eye of the user on the at least partially see-through display;

output a second instruction to the user to enter a second adjustment input to visually align the alignment hologram with the physical feature;

determine a second calibrated view matrix based on the second default view matrix and the second adjustment input; and

adjust the view matrix setting of the head-mounted display device based on the second calibrated view matrix.

10. A method for alignment based view matrix tuning of a head-mounted display device comprising:

detecting a physical feature having a physical location that is at least a threshold distance away from a rendering focal plane of the head-mounted display device, wherein the physical feature is indicia on a 2D surface of a physical object;

generating an alignment hologram based on the physical feature, wherein the alignment hologram corresponds in shape to the indicia and is programmatically generated for display or pre-stored and retrieved for display;

determining a view of the alignment hologram based on a default view matrix for a first eye of a user of the head-mounted display device;

displaying the view of the alignment hologram to the first eye of the user on an at least partially see-through display of the head-mounted display device;

outputting an instruction to the user to enter an adjustment input to visually align the alignment hologram with the physical feature;

determining a calibrated view matrix based on the default view matrix and the adjustment input; and

adjusting a view matrix setting of the head-mounted display device based on the calibrated view matrix.

11. The method of claim 10 , further comprising:

increasing an opacity of a region of the at least partially see-through display corresponding to a second eye of the user, such that the physical feature and the alignment hologram are not viewed by the second eye of the user.

12. The method of claim 10 , wherein the physical feature is one of a plurality of physical features that are optical tags located in a central region and a peripheral region of the 2D surface.

13. The method of claim 10 , wherein the physical feature is a physical object viewed by the head-mounted display device, and the alignment hologram is generated real time based on a captured image received at an outward facing camera of the head-mounted display device.

14. The method of claim 10 , wherein the threshold distance is between 20-40% of the distance from the head-mounted display device to the rendering focal plane.

15. The method of claim 10 , wherein the adjustment input includes inputs to translate the alignment hologram along one or more of an x, y, or z axis.

16. The method of claim 15 , wherein the adjustment input further includes input to rotate the alignment hologram in one or more of a pitch, yaw, or roll rotation.

17. The method of claim 10 , further comprising:

determining a second view of the alignment hologram based on a second default view matrix for a second eye of the user of the head-mounted display device;

displaying the second view of the alignment hologram to the second eye of the user on the at least partially see-through display;

outputting a second instruction to the user to enter a second adjustment input to visually align the alignment hologram with the physical feature;

determining a second calibrated view matrix based on the second default view matrix and the second adjustment input; and

adjusting the view matrix setting of the head-mounted display device based on the second calibrated view matrix.

18. A head-mounted display device for alignment based view matrix tuning comprising:

a display;

a processor;

a non-volatile storage device holding instructions executable by the processor to:

detect a physical feature having a physical location that is at least a threshold distance away from a rendering focal plane of the head-mounted display device, wherein the physical feature is indicia on a 2D surface of a physical object;

generate an alignment hologram based on the physical feature, wherein the alignment hologram corresponds in shape to the indicia and is programmatically generated for display or pre-stored on the non-volatile storage device and retrieved for display;

determine a view of the alignment hologram based on a default view matrix for a first eye of a user of the head-mounted display device;

display the view of the alignment hologram to the first eye of the user on the display;

receive an adjustment input from the user to visually align the alignment hologram with the physical feature;

determine a calibrated view matrix based on the default view matrix and the adjustment input; and

adjust a view matrix setting of the head-mounted display device based on the calibrated view matrix.