Estimating intensity variance due to noise in registered images

@article{Rohde2005EstimatingIV,
  title={Estimating intensity variance due to noise in registered images},
  author={Gustavo K. Rohde and Alan S. Barnett and Peter J. Basser and Carlo Pierpaoli},
  journal={NeuroImage},
  year={2005},
  volume={26 3},
  pages={673-84}
}
Image registration techniques which require image interpolation are widely used in neuroimaging research. We show that signal variance in interpolated images differs significantly from the signal variance of the original images in native space. We describe a simple approach to compute the signal variance in registered images based on the signal variance and covariance of the original images, the spatial transformations computed by the registration procedure, and the interpolation or… CONTINUE READING

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