What's an Aruco Marker ?? Aruco markers are widely used in robotics, computer vision, and augmented reality for tasks like camera calibration, robot navigation, object tracking, and more. They are a type of fiducial marker, which means they are simple visual markers that a camera can recognize and identify uniquely.What is an Aruco Marker? • An Aruco marker is a binary square image consisting of a black border and a unique internal binary pattern. • Each marker has a unique ID, which makes it ea