Target reverse crossing: a selection method for camera-based mouse-replacement systems

Abstract

We propose a selection method, "target reverse crossing," for use with camera-based mouse-replacement for people with motion impairments. We assessed the method by comparing it to the selection mechanism "dwell-time clicking," which is widely used by camera-based mouse-replacement systems. Our results show that target reverse crossing is more efficient than dwell-time clicking, while its one-time success accuracy is lower. We found that target directions have effects on the accuracy of reverse crossing. We also show that increasing the target size improves the performance of reverse crossing significantly, which provides future interface design implications for this selection method.