The calibration target in applications of machine vision, image measurement, photogrammetry, 3D reconstruction, for lens distortion correction; determine the relation between physical size and pixels; And to determine the relationship between object surface 3D geometric location of the point and corresponding points in the image, need to establish the geometric model of camera. Shooting with a fixed spacing pattern array plate through the camera, and through the calculation of calibration algorithm, the geometric model of camera can be obtained, so as to obtain the high precision measurement and reconstruction result. Plate with fixed spacing pattern array is the calibration target.

Material: Light weight alumina

Common types of calibration target：Solid circular array pattern、Chess board pattern（Can customized according to customer requirements ）

 Existing solid circular array design specifications (dot correction calibration board)