The problem of structural deformation monitoring has always been a research hotspot in engineering architecture. Research on structural deformation monitoring is the main way to solve the risk of engineering construction. Based on using close-range photogrammetry technology to monitor structural deformation, combining with image recognition technology to collect and process image data, and using the conditions of direct linear transformation and collinear equation to calculate based on the extracted coordinates of the measuring point, finally, according to the coordinates of the measuring point and the deflection value of the bridge structure, the study is carried out. Experiment: first, five sets of data are used to calibrate the close-range photogrammetry equipment of measurement point accuracy are analyzed, then the bridge piers and the measurement point coordinates, the lasso, under different load on the accuracy of close-range photogrammetry technology is analyzed, according to the relevant data of the error of the close-range photogrammetry technology are analyzed, and through the calculation of different measurement methods to analyze the direct linear transformation manifested in the article. The final results show that the X-axis coordinate range of the measured points in the auxiliary spatial coordinate system is 25∼40, Y-axis coordinate range is 8∼36, and Z-axis coordinate range is 10∼35. The coordinates of measuring points of bridge cables are distributed in the fourth quadrant of the spatial coordinate system. The accuracy values of all coordinates of the measuring points under the close-range photogrammetry equipment are less than 0.1 mm, indicating that the close-range photogrammetry equipment has a good effect on the calibration of measuring points, and the error generated when the load action of each measuring point of the bridge cable is 10 N is greater than that generated when the load action is 20 N. In different calculation and measurement methods, the results obtained by total station measurement and calculation method are reduced by about 0.04∼0.07 m compared with the actual value; the results obtained by direct linear transformation method are increased by about 0.02∼0.04 m compared with the actual value; and the results obtained by other measurement and calculation methods are increased by about 0.04∼0.06 m compared with the actual value.

中文翻译：

---

近距离摄影测量技术在结构变形监测中的应用

结构变形监测问题一直是工程建筑研究的热点。结构变形监测研究是解决工程建设风险的主要途径。在利用近距离摄影测量技术监测结构变形的基础上，结合图像识别技术来收集和处理图像数据，并利用直接线性变换和共线性方程的条件，基于提取的测量点坐标进行计算，最后，根据测量点的坐标和桥梁结构的挠度值进行了研究。实验：首先，使用五组数据来校准测量点精度的近距离摄影测量设备，然后分析桥墩和测量点坐标，套索，在不同载荷下对近距离摄影测量技术的准确性，根据有关数据对近距离摄影测量技术的误差进行分析，并通过计算不同的测量方法来分析本文中显示的直接线性变换。最终结果表明辅助空间坐标系中测量点的X轴坐标范围为25至40，Y轴坐标范围为8至36，Z轴坐标范围是10到35。桥梁电缆测量点的坐标分布在空间坐标系的第四象限中。近距离摄影测量设备下测量点的所有坐标的精度值均小于0.1 mm，表明近距离摄影测量设备对测量点的标定和负载作用时产生的误差具有良好的影响。桥缆每个测量点的“ 10 N”大于载荷作用为20 N时的测量值。在不同的计算和测量方法中，通过全站仪测量和计算方法获得的结果相比减少了约0.04〜0.07 m具有实际价值；直接线性变换法得到的结果增加了约0.02〜0。与实际值相比04 m；通过其他测量和计算方法获得的结果比实际值增加了约0.04〜0.06 m。