Figure 1: Algorithm comparison and validation with digitally strained images.
(A) The measured ALDIC strain data in the x-direction was consistently lower than the actual strain prescribed by the digital transformations, and the error progressively increased with greater applied strain. (B) The standard deviation of the strain values in the x-direction also increased with greater applied digital strains. (C) The measured ALDIC strain data in the y-direction were consistently lower than the actual strain prescribed by the digital transformations. (D) The standard deviation of the strain values in the y-direction increased with greater applied strain.
