A Respiratory Monitoring System in Surgical Environment Based on Fiducial Markers Tracking

Breathing is an important indicator of human life. Respiratory monitoring is needed in many surgical environments. To build a respiratory monitoring system for data acquisition requires the aid of acoustic or infrared sensor devices. Adding relevant equipment to the existing surgical environment not only adds the corresponding technical costs, but also may conflict with the original surgical equipment. In this paper, a respiratory monitoring system based on Aruco, an open source reality enhancement library for fiducial marker tracking, was proposed. This system has the advantages of low cost and convenient construction. The test of this monitoring system in the environment of simulated pancreatic lithotripsy verified the feasibility of its respiratory monitoring capability. Based on this system, we further explored the functions of multi-camera calibrations, breathing data extraction and posture analysis.