부산대학교 도서관

An important tool of the Lean management is the “Spaghetti Diagram”, which helps to establish the optimum layout for a department or a ward based on the movements performed by patients, staff and/or products (e.g., x-ray machines). The spaghetti diagram is usually created manually in which the movements of staff members and/or patients are visually observed. In our previous work, we reported the development of SmartSpaghetti system, which generates the Spaghetti Diagram in an automated and non-intrusive way by tracking a human's location using the smartphone's inertia sensors. In this paper, we address the challenges of SmartSpaghetti system in tracking human's location by estimating the distance traveled and the direction change in an accurate and robust way. Finally, we show preliminary evaluation of the developed distance and direction estimation modules of SmartSpaghetti system.