Vibration measurement plays an important role in the inspection and monitoring of civil structures. In recent years, the computer vision (CV)-based method has gained significant popularity in the field of vibration measurement for civil structures due to its inherent advantages, such as non-contact, low cost, long-distance measurement, and ease of implementation. However, those traditional CV-based methods are only suitable for situations with large vibration amplitude. The vibration of some civil structures is usually small especially under environmental excitation, which poses challenges for the traditional CV-based methods. The motion magnification (MM) technique has emerged as an effective solution for small-amplitude vibration measurement. Therefore, this study comprehensively reviews the MM technique for video-based vibration measurement of civil structures. First, the principles and characteristics of some representative MM techniques are introduced. Then, three major challenges encountered in vibration measurement of civil structures using MM techniques are summarized, and the research work to address these challenges is reviewed. Finally, the applications of MM techniques on various civil structures including bridges, cables, buildings, wind turbines and dams are summarized. This review can provide guidance to researchers and engineers in selecting suitable MM methods for vibration measurement of civil structures.

中文翻译：

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基于视频的土木结构振动测量的运动放大：综述


振动测量在土木结构的检查和监测中发挥着重要作用。近年来，基于计算机视觉（CV）的方法以其非接触、低成本、远距离测量、易于实施等固有优势，在土木结构振动测量领域得到了广泛的应用。 。然而，这些传统的基于CV的方法仅适用于振动幅度较大的情况。一些土木结构的振动通常很小，特别是在环境激励下，这对传统的基于CV的方法提出了挑战。运动放大（MM）技术已成为小振幅振动测量的有效解决方案。因此，本研究全面回顾了基于视频的土木结构振动测量的MM技术。首先介绍了一些有代表性的MM技术的原理和特点。然后，总结了使用MM技术进行土木结构振动测量遇到的三个主要挑战，并回顾了解决这些挑战的研究工作。最后，总结了MM技术在桥梁、电缆、建筑、风力涡轮机和大坝等各种土木结构上的应用。该综述可以为研究人员和工程师选择合适的土木结构振动测量MM方法提供指导。