This paper introduces a new registration method estimating the displacement field of bodies which deformations are constrained by an articulated rigid body. We propose an articulated transformation model embedded in a general registration scheme. A fast stochastic gradient descent optimization strategy suitable for noisy cost functions has been chosen to maximize the mutual information metric. Once registered, we propose to propagate the deformation by a linear elastic model through the use of a tetrahedral mesh. We demonstrate this method on 3D CT of neck images where bony structures between different patient images, as vertebrae, may rigidly move while other tissues may deform.
An articulated registration method
2005-01-01
187635 byte
Conference paper
Electronic Resource
English
An Articulated Registration Method
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