Head wearable display device calibrated for distortion correction using inter-pupillary distance

An apparatus for distortion correction, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• capture a set of images over a set of orientations using a set of cameras of the apparatus, the set of images comprising a first subset of images captured by a first camera of the set of cameras and a second subset of images captured by a second camera of the set of cameras, wherein the set of images further comprise a third subset of images captured by the first camera and a fourth subset of images captured by the second camera;
• detect a set of facial features in each of the first subset of images and the second subset of images;
• measure a set of inter-pupillary distances over the set of orientations based at least in part on the set of facial features in each of the first subset of images and the second subset of images;
• determine an inter-pupillary distance parameter for the apparatus based at least in part on aggregating the set of inter-pupillary distances over the set of orientations;
• and
• calibrate the apparatus based at least in part on the inter-pupillary distance parameter.

An apparatus for distortion correction, comprising:

• means for capturing a set of images over a set of orientations using a set of cameras of the apparatus, the set of images comprising a first subset of images captured by a first camera of the set of cameras and a second subset of images captured by a second camera of the set of cameras, wherein the set of images further comprise a third subset of images captured by the first camera and a fourth subset of images captured by the second camera;
• means for detecting a set of facial features in each of the first subset of images and the second subset of images;
• means for measuring a set of inter-pupillary distances over the set of orientations based at least in part on the set of facial features in each of the first subset of images and the second subset of images;
• means for determining an inter-pupillary distance parameter for the apparatus based at least in part on aggregating the set of inter-pupillary distances over the set of orientations;
• and
• means for calibrating the apparatus based at least in part on the inter-pupillary distance parameter.