1. A method for determining a pose of a user comprising the steps of: capturing a video image sequence of an environment including at least one coded marker; detecting if the at least one coded marker is present in the video images; if the at least one marker is present, extracting feature correspondences of the at least one coded marker; determining a code of the at least one coded marker using the feature correspondences; and comparing the determined code with a database of predetermined codes to determine the pose of the user.