Surface Registration Error Accuracy Experiments Using a Spinal Model

This article conducts surface registration error accuracy experiments using a spinal model, as shown in Figure 6. The surface registration error is the personalized marker registration error, which is defined as the distance between the position of the personalized marker recognized by the camera in the world coordinate system and the coordinate value of the virtual marker in the world coordinate system after registration. After performing one registration, the virtual three-dimensional medical image is fused with the corresponding surgical site of the model, and a set of error values is returned. The spatial position of the model is then changed, and the above experimental steps are repeated to perform the second set of experiments. The error values of the markers are measured, and a total of ten experiments are conducted.