“…The associated method can be classified as 2D-DIC (or simply DIC) [44,70,69,26,20,77], stereo-DIC [71,23,15,56,2] and Digital Volume Correlation (DVC) [4,41,24], respectively. In the case of stereo-DIC, a similar set up allows to measure the shape of a 3D mechanical surface [5,16,56,13], which is actually a fundamental step prior to any experiment for 3D surface displacement field measurements. The general DIC approach finds numerous applications in engineering: material characterization, geometry control, defect identification, model validation, etc.…”