Fig. 9From: Esmraldi: efficient methods for the fusion of mass spectrometry and magnetic resonance imagesVector fields obtained by deformable registration methods. The vectors correspond to the displacements applied to the MS image to match the MR image, obtained by : a the variational method of Modersitzki [21] or free form deformation models with two different parameters b \(\text {FFD}_1\), c \(\text {FFD}_2\). The vector field resulting from the variational method is more homogeneous than that of \(\text {FFD}_1\) and more precise than that of \(\text {FFD}_2\)Back to article page