Hand-Eye Calibration (HEC) for Manipulators is a process that involves the alignment of the visual system of an industrial robotic arm to its end effector. The goal of HEC is to ensure that the camera and the manipulator are aligned so that the robot can accurately track and interact with objects in the real world. This process helps to improve the accuracy and efficiency of the robot's operations, as well as reduce the risk of errors caused by misalignment.