【摘要】 本文提出了利用数字图像处理技术即形心搜索法测量梁体局部表面位移的光力学检测方法。并且 ,把形心搜索法和有限元位移模式相结合进一步求出了梁体局部表面位移场和应变场。较其他光学测试方法如云纹干涉法 ,具有较高的实用性和很高的计算速度更多还原

【Abstract】 A novel method of digital image processing named centroid searching is presented,which is used in the measurement of local surface displacement of bridge.Local surface displacement and strain fields were given out through the combination of centroid searching and finite element method.The higher calculation speed and activity is testified through comparing with other optical method such as Moiré interferometry.更多还原