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B-Spline Explicit Active Surfaces: An Efficient Framework for Real-Time 3-D Region-Based Segmentation

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6 Author(s)
Barbosa, D. ; Lab. on Cardiovascular Imaging & Dynamics, Katholieke Univ. Leuven, Leuven, Belgium ; Dietenbeck, T. ; Schaerer, J. ; D'hooge, J.
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A new formulation of active contours based on explicit functions has been recently suggested. This novel framework allows real-time 3-D segmentation since it reduces the dimensionality of the segmentation problem. In this paper, we propose a B-spline formulation of this approach, which further improves the computational efficiency of the algorithm. We also show that this framework allows evolving the active contour using local region-based terms, thereby overcoming the limitations of the original method while preserving computational speed. The feasibility of real-time 3-D segmentation is demonstrated using simulated and medical data such as liver computer tomography and cardiac ultrasound images.

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Image Processing, IEEE Transactions on  (Volume:21 ,  Issue: 1 )