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Three-dimensional reconstruction of the bony structures involved in the articular complex of the human shoulder using shape-based interpolation and contour-based extrapolation

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5 Author(s)
Albu, A.B. ; Dept. of Electr. Eng., Laval Univ., Quebec City, Que., Canada ; Laurendeau, D. ; Hebert, L.J. ; Moffet, H.
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Here, we propose a 3D reconstruction approach using shape-based interpolation and contour-based extrapolation. This approach aims to generate a 3D geometric model of a human shoulder from a sequence of MR parallel 2D cross-sections. While interpolation generates intermediate slices between every pair of adjacent input slices, extrapolation performs a smooth closing of the external surface of the model. We propose a new interpolation method based on conditional morphological dilation. Our extrapolation approach is based on surface smoothness constraints and gradually shrinks every extreme 2D cross-section of a bony structure towards a point, respectively. Surface rendering is accomplished through the generation of a triangular mesh using a parametric representation of 2D slice contours. After surface rendering, local surface irregularities are smoothed with Taubin's surface fairing algorithm [G. Taubin, (1995)].

Published in:

3-D Digital Imaging and Modeling, 2003. 3DIM 2003. Proceedings. Fourth International Conference on

Date of Conference:

6-10 Oct. 2003