Progress of Application of Digital Image Correlation Method (DIC) in Civil Engineering

Digital Image Correlation Method (DIC), also known as Digital Speckle Correlation (DSC), is an optical measurement method that uses computer vision technology to identify and calculate the probability statistical correlation of randomly distributed speckle features on the surface of an object before and after deformation, in order to determine the displacement or deformation of the object. Digital image correlation method is a modern full field optical measurement technology with the characteristics of non-contact and non interference, which has been widely applied in fields such as aerospace, civil engineering measurement, and object deformation monitoring. This article elaborates on the development process of digital image related technologies and their applications in the field of civil engineering. This technology has a simpler operating process, can be applied to a wider range of usage environments, and achieves higher accuracy. Therefore, its application in the field of civil engineering is becoming increasingly common.