<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">digital image correlation</topic></authority><related type="broader"><topic>analysis and testing techniques</topic></related><variant type="other"><topic>DIC</topic></variant><variant type="other"><topic>correlation, digital image</topic></variant> <note xml:lang="en"><![CDATA[ Digital Image Correlation (DIC) is an optical image analysis method, based on gray value digital images captured by an optical sensor at a rate of 1,500 images per second. It employs tracking and image registration techniques to measure deformation, displacement, and strain on almost any material. ]]></note></mads>