Technique for registering image data of an object

摘要

A technique of registering image data of an object 112 with at least one of a location and an orientation of the object 112 is provided. A method embodiment of this technique comprises the step of providing three-dimensional image data generated for the object 112, the image data being representative of at least a portion of the object 112 and of reference markings 130 associated with the object 112. The reference markings 130 have a known spatial relationship with a registration tracker 122 adapted to be tracked by a navigation system 100. The method further comprises providing registration tracking data representative of at least one of a spatial location and a spatial orientation of the registration tracker 122 and providing object tracking data representative of at least one of a spatial location and a spatial orientation of an object tracker adapted to be tracked by the navigation system. The object tracker 124 has a fixed spatial relationship with the object 112. In a next step, the method calculates from the registration tracking data and the object tracking data for a given point in time the relative position between the registration tracker 122 and the object tracker 124. Than, registered image data is generated representative of at least one of the location and the orientation of the object 112 taking into account the spatial relationship between the reference markings 130 and the registration tracker 122 on the one hand and the relative position between the registration tracker 122 and the object tracker 124 on the other.