Effects of System Parameters on the Measurement Accuracy of Optical Surgical Navigation System

The optical surgical navigation system, which plays a crucial role in ensuring the safety and success rate of medical treatment, is heavily dependent on measurement accuracy determined by system parameters. To investigate the measurement error distribution pattern of the optical surgical navigation system and to guide the installation of the optical surgical navigation system, this paper analyses the influence of system parameters on the measurement accuracy of the optical surgical navigation system. First, aiming at the spatial geometric model of the optical surgical navigation system, the measurement error model of the system is established by using the triangulation method. Then, the system parameters are divided into positional parameters and structural parameters. Based on the established measurement error model, the effects of system parameters such as baseline, focal length, the angle between the baseline and the optical axis of the camera, distance, horizontal view angle, and vertical view angle, on the measurement accuracy of the system are discussed, and the simulation is carried out. Finally, based on the simulation results, a guideline is given for the construction of the optical surgical navigation system.