Figure 4.

(a) Deviation in traction magnitude (DTM) using a simulated displacement field from the FE solution (best-case scenario for force reconstruction) for different interrogationwindow sizes (n²). Note that the displacements are averaged within each window to mimic the pre-smoothing by the displacement algorithms. (b) The same result, but displayed as a function of adhesion diameter expressed in units of mesh size. A rational function is fitted to the data to show the trend. Adhesions smaller than 4 mesh sizes are difficult to properly reconstruct.