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A new non-rigid registration approach is presented for the images which contain highly local deformation, using Free-Form Deformation (FFD) and Overlapped Block Check method. First of all, the hierarchical B-spline FFD with large grid is used for global registration. Then the rough registered image and fixed image are divided into a series of corresponding overlapped block pairs. We calculate the...
Based on shape context and wavelet transform, a new approach to select automatically the landmarks for non-rigid registration of medical brain images is proposed in this paper. First, the two magnetic resonance (MR) images to be registered are segmented, their skull boundaries and cerebrospinal fluid boundaries are extracted, then shape context is applied to get landmarks on those boundaries and establish...
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