南通大学学报（自然科学版）

针对建筑物结构动态位移监测的难点,给出一种基于近景摄影测量的建筑物结构动态位移监测方法.利用二维直接线性变换算法进行图像标定,计算出像平面坐标和物平面坐标之间的转换参数,从而对连续序列图像中的目标坐标进行求解.实验结果表明,物平面坐标解算值与物平面坐标之间的绝对误差在1 mm左右,特别适用于建筑物需要对其应力状况、振动响应等情况进行监测的场合.

To overcome the difficulties of building structure dynamic displacement monitoring,a surveying method of building structure dynamic displacement based on close-range photogrammetry was given.Using 2D direct linear transformation algorithm,the measurement software calculated the transformation parameters between image planes coordinate and object plane coordinate through image calibration,so as to solve the object coordinate for the continuous sequence images.The results showed that the absolute deviation between the calculation value and the object plane coordinate were lower than 1 mm.This technology was especially effective in the situations where the monitoring of stress state and vibration response of building structures were needed.