Device to measure position and orientation of object provided with markers, e.g. surgical instrument; obtains successive image pairs and has control unit to activate different groups of markers formed as light sources for each image pair

摘要

The device has two spaced image sensors (10,11) to obtain successive image pairs. An imaging device (15) projects the markers (3-9) of the object (1) onto the image sensors. A marker control unit (25) activates markers formed as light sources, and activates different marker groups for each image pair. An evaluation unit (21) determines the co-ordinates of the markers from a number of successive image pairs. An Independent claim is included for a method for measuring the position and orientation of an object provided with markers.