时间基线视差法在形变测量中的应用探索

数码相机属于非测量相机，它没有框标及定向设备，不能得到摄影瞬间的内、外方位元素的初始值。因此用数码相机获取的测量数据传统解法无法计算处理。我们在钢结构变形实验中使用数码相机进行监测，测量数据利用时间基线视差法处理，采用“直线内插法”有效地减弱数码相机内、外方位元素不稳定以及外界环境条件的影响，取得了成果分析精度达2／1000的效果。

Research on the measurement of the deflection by motion parallax

Digital camera belongs to non-metric camera, which has no fiducial marks and orientation equipment. Thus it is impossible to obtain the initial values of the interior and exterior orientation elements at the moment of shoot. So the measurements obtained by digital camera cannot be processed by conventional methods. To monitor the steel structure in deformation experiments, the method of pseudo-parallax to process measurements is used, and the influence of the instability of the interior and exterior orientation elements of digital camera as well as the conditions of environment is weaken effectively by use of the method of linear interpolation. The precision of the final results obtained is 2/1000.