A set of FEniCS- and VTK-based python tools for Finite Element Digital Image Correlation/Image Registration/Motion Tracking, basically implementing the method described in [Genet, Stoeck, von Deuster, Lee & Kozerke (2018). Equilibrated Warping: Finite Element Image Registration with Finite Strain Equilibrium Gap Regularization. Medical Image Analysis.] and [Genet (2023). Finite strain formulation of the discrete equilibrium gap principle: application to mechanically consistent regularization for large motion tracking. Comptes Rendus Mécanique.].