US Patent 11961258 Calibration method for optical see-through display and calibration system

A calibration method for an optical see-through display includes the following. An image sensing device is fixed at a standard position of an eye of a user seeing the optical see-through display, and the image sensing device is configured to photograph a virtual image displayed by the optical see-through display and an image of a real object in an environment. Extrinsic parameters between the image sensing device and a virtual camera are calculated by using extrinsic parameters between the image sensing device and multiple calibration patterns of the real object as well as extrinsic parameters between the virtual camera and the multiple calibration patterns of the real object. A calibration system is also provided.