Date of download: 10/23/2017 Copyright © ASME. All rights reserved. From: Computer Vision-Based, Noncontacting Deformation Measurements in Mechanics: A Generational Transformation Appl. Mech. Rev. 2013;65(5):050802-050802-23. doi:10.1115/1.4024984 Figure Legend: Schematic of a 2D-DIC system including (a) digital camera with lens to image specimen, (b) storage system (personal computer (PC) with digitizer), (c) lighting system to illuminate specimen. Surface coated with high-contrast speckle pattern.