A calibration simplified method for gaze interaction based on using experience

The step of calibration prevents the gaze interaction from interacting naturally, which usually needs five or more calibration points to obtain the user´s calibration information. In this paper, a calibration simplified method is proposed, which is based on user experience and consists of the user experience accumulation stage and the calibration simplified stage. In the user experience accumulation stage, the calibration is still needed as usual before each gaze interaction and the calibration parameters and the position of the user are stored as the calibration experience, where the calibration parameters include the actual coordinates of the calibration points and their estimation errors. In the calibration simplified stage, the user needs to fixate on only one calibration point for calibration before the calibration information can be estimated according to the user experience stored in the first stage. Even the calibration information can be estimated according to only the position of the user and the stored calibration parameters, which means the user can interact with computer via gaze directly without calibration. The simulations show that the gaze estimation accuracy of the proposed calibration simplified method can be 1.4047° with one calibration point and 1.7489° without calibration point, which are much higher than that without the user experience.