Comparison of Touchless Interaction With One and Multiple Optical Sensors

Abstract

In this research, we compared the precision and ease of use of hand-tracking with one and three optical sensors. We created two test scenes that simulated real-life scenarios, one focusing on smoothness and intuitiveness and the other one focusing on precision and tracking range. We conducted tests with 25 participants and measured the precision and effectiveness of their work with basic user interface elements and 3D objects. This research showed that using multiple optical sensors for hand-tracking greatly improves the precision of the tracking, widens the tracking range and provides more smooth interaction. On average, 80% of the users preferred using three sensors for the interaction because it allowed more users to finish the tasks (74% on average) in a shorter time (15% on average) and with more precise results (43% on average) compared to same tasks done with just one sensor.