B-Snake model for centerline planning of Virtual Endoscopy

A new centerline planning algorithm based on B-Snake model is designed. It could be executed in original images data directly, no longer subjects to the results of segmentation. The moving regular polyhedron centralizing method is defined, which provides a centralizing force as the exterior force of B-Snake model. And the interior force of the Snake model is omitted, so as to control the model easily. With the characteristic of B-spline, a few control points are chosen and the smooth and continuous centerline is got effectively. Error analysis and experimental results show the validity of the proposed method.