Fig. 5
From: A non-rigid registration method for the analysis of local deformations in the wood cell wall
Example of application of the algorithm on an artificial homogeneous image (a) where the grid is imposed to highlight the deformations and mismatches. The difference between reference and moving images is shown before registration (b), then after non-rigid registration (c). In d the non-rigid displacement fields in the two directions and in e the non-rigid strains in the x–y plane are mapped on the reference image. f Strain fields plotted on the deformed image as result of finite element simulation, under the assumption of homogeneous material. The strain in x-direction (E11) is on the left side, the strain calculated in y-direction (E22) is on right side