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Title: Automatic elastic medical image registration based on image intensity
Authors: Wang, X
Feng, D
Keywords: Image registration
Medical imaging
Elastic registration
Affine transformation
Issue Date: 2005
Publisher: World Scientific
Source: International journal of image and graphics, 2005, v. 5, no. 2, p. 351-369 How to cite?
Journal: International journal of image and graphics 
Abstract: An automatic elastic medical image registration approach is proposed, based on image intensity. The algorithm is divided into two steps. In Step 1, global affine registration is first used to establish an initial guess and the resulting images can be assumed to have only small local elastic deformations. The mapped images are then used as inputs in Step 2, during which, the study image is modeled as elastic sheet by being divided into sub-images. Moving the individual sub-image in the reference image, the local displacement vectors are found and the global elastic transformation is achieved by assimilating all of the local transformation into a continuous transformation. The algorithm has been validated by simulated data, noisy data and clinical tomographic data. Both experiments and theoretical analysis have demonstrated that the proposed algorithm has a superior computational performance and can register images automatically with an improved accuracy.
ISSN: 0219-4678
EISSN: 1793-6756
DOI: 10.1142/S0219467805001793
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