Patent ID: 11961258
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. The calibration system as claimed in claim 10, further comprising a tracking camera coupled to a controller, wherein the controller is further configured to:
photograph a pattern of the real object of a known size by commanding the tracking camera, and obtain extrinsic parameters between the tracking camera and the pattern of the real object, wherein a relation between the tracking camera and the image sensing device is calibrated, and obtain intrinsic parameters of the tracking camera and extrinsic parameters between the tracking camera and the image sensing device; and
transform a coordinate of a third feature point on the pattern of the real object to a coordinate of an image photographed by the tracking camera, then transform to a coordinate of an image photographed by the image sensing device, and further transform to a coordinate of an image of the virtual camera, and lastly transform to a coordinate of a virtual image displayed by the optical see-through display, wherein a position represented by the coordinate of the virtual image, the third feature point, and the standard position are on a same straight line in a space.