Performance comparison of two head-controlled computer interaction systems with a multi-directional tapping task

Abstract

The performance comparison of two head-controlled interaction systems was made using a multi-directional tapping test on the basis of Fitts’ paradigm, as recommended by ISO 9241-9 standard. Both investigated input systems were based on head position and movements visual recognition by a camera and a special software. The study was made on the sample of 14 healthy subjects without motoric deficiencies, with counterbalanced within-subject experiment design. Both systems were marked by similar error rates (average 23.45%), while their throughput values were significantly different (0.67 versus 1.92 bit/s). Additionally, a comparison of performance characteristics with several other head activated systems was made by means of a literature review.