4033 1998 1998 eng 25 28 conferenceobject Austria 0 -- -- -- Boundary Surface Shrinking - a Continuous Approach to 3D Center Line Extraction Proc. of IMDSP’98, held in Alpbach Hartmut Schirmacher Bernd Girod Malte Zöckler Heinrich Niemann Detlev Stalling Hans Seidel Hans-Christian Hege Visual Data Analysis Visual Data Analysis in Science and Engineering Hege, Hans-Christian Visual and Data-centric Computing