TY - CHAP A1 - Schirmacher, Hartmut A1 - Zöckler, Malte A1 - Stalling, Detlev A1 - Hege, Hans-Christian ED - Girod, Bernd ED - Niemann, Heinrich ED - Seidel, Hans T1 - Boundary Surface Shrinking - a Continuous Approach to 3D Center Line Extraction T2 - Proc. of IMDSP’98, held in Alpbach Y1 - 1998 SP - 25 EP - 28 CY - Austria ER -