BUILDING A HYBRID PATIENTS MODEL FOR AUGMENTED REALITY IN SURGERY - AREGISTRATION PROBLEM

In the field of Augmented Reality in Surgery, building a hybrid patien t's model, i.e. merging all the data and systems available for a given application, is a difficult but crucial technical problem. The purpos e is to merge all the data that consitute the patient model with the r eality of the surgery, i.e. the surgical tools and feedback devices. I n this paper, we first develop this concept, we show that this constru ction comes to a problem of registration between various sensor data, and we detail a general framework of registration The state of the art in this domain is presented. Finally, we show results that we have ob tained using a method which is based on the use of anatomical referenc e surfaces. We show that in many clinical cases, registration is only possible through the use of internal patient structures.