The conventional strategy for controlling the error in nite element (FE) methods is based on a posteriori estimates for the error in the global energy or L 2 norm involving local residuals of the computed solution (error indicators). Such estimates are derived via duality arguments where the approximation properties of the nite element space enter through local interpolation constants while the...

In this paper we propose a method for automatic placement of landmark points in 3D volumes, for use in morphological studies, which addresses the issue of quantitative estimation of measurement error. We are given a sample 3D volume of image slices (and a number of manually annotated landmark points) and develop an algorithm that is capable of estimating landmark locations in a similar but nove...