Abstract: A three-dimensional calibration target may include an asymmetric polyhedron having a bottom and at least four faces, a base platform underlying the bottom and rotatably supporting the asymmetric polyhedron and a home position indicator to indicate a predefined angular position of the asymmetric polyhedron relative to the base.

Abstract: An example system includes a plurality of cameras to capture images of a target object and a controller to connect to the plurality of cameras. The controller is to control the plurality of cameras to capture the images of the target object. The controller is further to determine a pose of a camera of the plurality of cameras. The system further includes a platform to support the target object. The platform includes a plurality of unique markers arranged in a predetermined layout. The controller is further to determine the pose of the camera based on unique markers of the plurality of unique markers that are detected in an image captured by the camera.