COMTIS: Customizable touchless interaction system for large screen visualization.

Background: Large screen visualization systems have been widely utilized in many industries. Such systems can help illustrate the working states of different production systems. However, efficient interaction with such systems is still a focus of related research. Methods: In this paper, we propose a touchless interaction system based on RGB-D camera using a novel bone-length constraining method. The proposed method optimizes the joint data collected from RGB-D cameras with more accurate and more stable results on very noisy data. The user can customize the system by modifying the finite-state machine in the system and reuse the gestures in multiple scenarios, reducing the number of gestures that need to be designed and memorized. Results/Conclusions: he authors tested the system in two cases. In the first case, we illustrated a process in which we improved the gesture designs on our system and tested the system through user study. In the second case, we utilized the system in the mining industry and conducted a user study, where users say that they think the system is easy to use.