Abstract
We have previously developed a new surface mesh data structure in itk (\code{itk::QuadEdgeMesh}~\cite{itkQE}). In this document we describe a new filter (\code{itk::QENormalFilter}) to estimate normals for a given triangular surface mesh in this data structure. Here we describe the implementation and use of this filter for calculating normals of a \code{itk::QuadEdgeMesh}.