Full‐field deformation measurement of specific materials is an important issue in civil engineering materials testing. This paper presents a flexible videogrammetric scheme to measure full‐field deformation of an artificial rock‐like material under uniaxial compression. In this scheme, two high‐speed cameras were used to measure the spatial morphological changes of the material surface, which was sprayed with a speckle pattern. A robust self‐adaptive window matching strategy is then proposed to extract accurate displacements of tracking points. Finally, three‐dimensional (3D) point clouds and full‐field deformation can be calculated by photogrammetric and spatiotemporal analysis. Simulation and empirical tests demonstrated that the self‐adaptive window matching strategy used with high‐speed videogrammetric speckle image sequences can detect more subtle deformation and avoid more mismatches than a fixed‐window matching strategy.

中文翻译：

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使用自适应窗口匹配的摄影测量法进行全场变形测量

特定材料的全场变形测量是土木工程材料测试中的重要问题。本文提出了一种灵活的视频测量方案，用于测量单轴压缩下人造岩石状材料的全场变形。在此方案中，使用了两个高速相机来测量喷涂有斑点图案的材料表面的空间形态变化。然后提出了一种鲁棒的自适应窗口匹配策略来提取跟踪点的精确位移。最后，可以通过摄影测量和时空分析来计算三维（3D）点云和全场变形。