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Proceedings Paper

Shape reconstruction and subsequent deformation of soleus muscle models using B-spline solid primitives
Author(s): Victor Ng-Thow-Hing; Anne Agur; Kevin Arthur Ball; Eugene Fiume; Nancy McKee
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Paper Abstract

We introduce a mathematical primitive called the B-spline solid that can be used to create deformable models of muscle shape. B-spline solids can be used to model skeletal muscle for the purpose of building a data library of reusable, deformable muscles that are reconstructed from actual muscle data. Algorithms are provided for minimizing shape distortions that may be caused when fitting discrete sampled data to a continuous B-spline solid model. Visible Human image data provides a good indication of the perimeter of a muscle, but is not suitable for providing internal muscle fiber bundle arrangements which are important for physical simulation of muscle function. To obtain these fiber bundle orientations, we obtain 3-D muscle fiber bundle coordinates by triangulating optical images taken from three different camera views of serially dissected human soleus specimens. B-spline solids are represented as mathematical three-dimensional vector functions which can parameterize an enclosed volume as well as its boundary surface. They are based on B-spline basis functions, allowing local deformations via adjustable control points and smooth continuity of shape. After the B-spline solid muscle model is fitted with its external surface and internal volume arrangements, we can subsequently deform its shape to allow simulation of animated muscle tissue.

Paper Details

Date Published: 13 May 1998
PDF: 12 pages
Proc. SPIE 3254, Laser-Tissue Interaction IX, (13 May 1998); doi: 10.1117/12.308192
Show Author Affiliations
Victor Ng-Thow-Hing, Univ. of Toronto (Canada)
Anne Agur, Univ. of Toronto (Canada)
Kevin Arthur Ball, Univ. of Toronto (Canada)
Eugene Fiume, Univ. of Toronto (Canada)
Nancy McKee, Univ. of Toronto (Canada)


Published in SPIE Proceedings Vol. 3254:
Laser-Tissue Interaction IX
Steven L. Jacques; Jeff Lotz, Editor(s)

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