An automated calibration method for non-see-through head mounted displays.
Bottom Line: The centroids of the markers on the calibration object are recovered and their locations re-expressed in relation to the HMD grid.This allows established camera calibration techniques to be used to recover estimates of the HMD display's intrinsic parameters (width, height, focal length) and extrinsic parameters (optic centre and orientation of the principal ray).Our calibration method produces low reprojection errors without the need for error-prone human judgements.
Affiliation: Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK. email@example.comShow MeSH
Mentions: Our aim was to find estimates of the intrinsic and extrinsic matrices which define the HMD display (shown pictorially in Fig. 1). The extrinsic matrix describes the location of the optic centre of the HMD display and the orientation of the principal ray (in world coordinates):(1)S=RTT01where R is a 3 × 3 rotation matrix and T is a 1 × 3 translation matrix, i.e., 6 extrinsic parameters.
Affiliation: Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK. firstname.lastname@example.org