@article{Denzler96:3DD,<br>  title = {3D Data Driven Prediction for Active Contour Models based on Geometric Bounding Volumes},<br>  journal = {Pattern Reconition Letters},<br>  author = {Joachim Denzler and Heinrich Niemann},<br>  year = {1996},<br>  pages = {1171-1178},<br>}<br>