The final type of segmentationmethod is atlas-based segmentation (sometimes also
called label propagation). In this approach, additional knowledge is introduced
through an atlas image, in which an expert has labeled the brain structures of interest.
The atlas is first registered to the target image, and the resulting transformation
is then used to deform the atlas labels to the coordinate system of the target image.
During registration the similarity between the warped atlas image and the
target image is maximized, while at the same time the deformation is constrained
to ensure that the spatial information of the atlas is maintained.http://repub.eur.nl/res/pub/20550/100908_Lijn%2C%20Fedde%20van%20der.pdf
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