Visual and Gyroscope Sensor for Head Movement Controller System on Meal-Assistance Application

Head movement utilizes gestures to aid people with disabilities so that they can have hands-free human-computer interaction. Currently, motion-based sensor is the most widely used approach to recognize of head gestures. Identification of head movement is important to control a robotic manipulator in an assisting device. However, the most effective methodologies to assess head angular movements are yet to be discovered. This paper combines two algorithms, the visual sensor and the gyro sensor, to identify head orientation movement with high precision. Head orientations were measured using data distribution and this was done with a meal-assistance robot manipulator used in a sitting position. Evaluation of the accuracy of the system shows that a visual sensor, a gyro sensor, and a combined sensor are 99.60%, 91.26%, and 99.85%, respectively. Therefore, we propose the application of position control of meal assistive robot based on user's head movement in a sitting position.