TRACKING SYSTEM AND TRACKING METHOD USING THE SAME

摘要

A tracking system and method using the same is disclosed which is capable of minimizing a restriction of surgical space by achieving a lightweight of the system as well as a reduction of a manufacturing cost through calculating a three-dimensional coordinates of each of makers using one image forming unit. In the tracking system and method using the same, lights emitted from the markers are transferred to one image forming unit through two optical paths, an image sensor of the image forming unit forms two images (direct image and reflection image) of the two optical paths of the markers, and therefore, the system and method using the same has an effect of reducing a manufacturing cost of the tracking system with small and lightweight, and relatively low restriction of surgical space comparing with conventional tracking system since it is possible to calculate a spatial position and direction of the markers attached on a target by using one image forming unit.

主权项

1. A tracking system comprising:
at least three markers attached on a target and emitting lights or reflecting lights emitted from at least one light source; a reflector reflecting the lights which are emitted from the markers or the lights reflected by the markers; an image forming unit which forms a direct image by directly receiving lights emitted from the markers and, at the same time, forms a reflection image by receiving lights reflected from the reflector after being emitted from the markers; and a processor which calculates three-dimensional coordinates of the markers using the direct image and the reflection image formed on the image forming unit, and calculates a spatial position and direction of the target by comparing the three-dimensional coordinates of the markers with a pre-stored geometric information between the markers adjacent to each other.