CAMERA CALIBRATION SYSTEM AND THREE-DIMENSIONAL MEASURING SYSTEM

摘要

Camera calibration strong to noise factors such as a variation of the environment light and obstructions is realized. Light-emitting markers (22) the on/off of which can be controlled are arrayed in a matrix on a reference panel (20) on which an object (40) is placed. The light-emitting markers (22) blink according to respective different switch patterns in synchronism with the frame of continuous imaging of a camera (14). A three-dimensional measuring instrument (10) determines the time-varying bright-and-dark pattern of a blinking point from the image of each frame and identifies on the basis of the pattern which light-emitting marker (22) each point corresponds to. Using the identification results, camera calibration is performed, and a coordinate transformation parameter is computed .