Optical see-through display calibration

A device comprising:

• a processor;
• a storage device coupled to the processor and configurable for storing instructions, which, when executed by the processor cause the processor to:
• guide a user to align a first virtual target on the OSD to a real-world target;
• collect, while guiding the user, a first plurality of real-world target poses, each real-world target pose having a first plurality point correspondences to the OSD;
• receive an indication of a correct alignment between the first virtual target and the real-world target;
• guide the user to align a second virtual target on the OSD to the real-world target, the second virtual target having a different position than the first virtual target;
• collect, while guiding the user, a second plurality of real-world target poses, each real-world target pose having a second plurality of point correspondences to the OSD;
• receive an indication of a correct alignment between the second virtual target and the real-world target;
• iteratively refine of an estimated eye position with respect to the OSD according to:
• a set of positioning parameters, and
• a set of point correspondences to the OSD selected from the first and second plurality of point correspondences to the OSD;
• and
• provide, in response to refining the estimated eye position, an initial OSD calibration profile comprising the estimated eye position.

A machine readable non-transitory storage medium having stored therein program instructions that are executable by a processor to:

• guide a user to align a first virtual target on the OSD to a real-world target;
• collect, while guiding the user, a first plurality of real-world target poses, each real-world target pose having a first plurality point correspondences to the OSD;
• receive an indication of a correct alignment between the first virtual target and the real-world target;
• guide the user to align a second virtual target on the OSD to the real-world target, the second virtual target having a different position than the first virtual target;
• collect, while guiding the user, a second plurality of real-world target poses, each real-world target pose having a second plurality of point correspondences to the OSD;
• receive an indication of a correct alignment between the second virtual target and the real-world target;
• iteratively refine an estimated eye position with respect to the OSD according to:
• a set of positioning parameters, and
• a set of point correspondences to the OSD selected from the first and second plurality of point correspondences to the OSD;
• and
• provide, in response to refining the estimated eye position, an initial OSD calibration profile comprising the estimated eye position.

An apparatus for calibrating an optical see-through display, the apparatus comprising:

• means for guiding a user to align a first virtual target on the OSD to a real-world target;
• means for collecting, while guiding the user, a first plurality of real-world target poses, each real-world target pose having a first plurality point correspondences to the OSD;
• means for receiving an indication of a correct alignment between the first virtual target and the real-world target;
• means for guiding the user to align a second virtual target on the OSD to the real-world target, the second virtual target having a different position than the first virtual target;
• means for collecting, while guiding the user, a second plurality of real-world target poses, each real-world target pose having a second plurality of point correspondences to the OSD;
• means for receiving an indication of a correct alignment between the second virtual target and the real-world target;
• means for iteratively refining an estimated eye position with respect to the OSD according to:
• a set of positioning parameters, and
• a set of point correspondences to the OSD selected from the first and second plurality of point correspondences to the OSD;
• and
• means for providing, in response to refining the estimated eye position, an initial OSD calibration profile comprising the estimated eye position.