METHOD AND DEVICE FOR EFFICIENTLY EDITING A THREE-DIMENSIONAL VOLUME USING RAY CASTING

摘要

A method for efficiently changing a depiction of a three-dimensional volume using ray casting is providing. The method includes dividing the three-dimensional volume into zones, inputting a change that is required to the depiction, and ascertaining the zones that are affected by the change. The method also includes classifying the change as relevant to a zone when the zone is affected by the change and effecting an assignment between the affected zones and the relevant changes. The method includes performing ray casting using simulated rays. A change is only carried out for sampling points along the rays when the sampling point lies in an affected zone.