直接线性变换法在变形测量中的应用研究  

The application study of the direct linear transform in deformation observation

作　　者：于承新[1] 张向东 牟玉枝[1] 宋传增[3] 全锦[3] 丁宁[3] 李宪立[3] 

机构地区：[1]山东建筑工程学院计算机科学与技术系,山东济南250014 [2]山东省蒙阴县质量技术监督局,山东蒙阴276200 [3]山东建筑工程学院,山东济南250014

出　　处：《山东建筑工程学院学报》2002年第3期23-28,共6页Journal of Shandong Institute of Architecture and Engineering

基　　金：山东省科技计划项目 (981 2 0 630 3)

摘　　要：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 ,测量数据利用直接线性变换法处理 ,该方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Digital camera belongs to non metric camera, which has no fiducial marks and orientation equipment. Thus it is impossible to obtain the approximate 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. Using the digital camera to monitor the steel structure in deformation experiments, we utilize the method of direct linear transform to process measurements. The method of direct linear transform effectively weakens the influence of the instability of the interior and exterior orientation elements of digital camera as well as the conditions of environment, So high precision as 2‰ is finally obtained.

关 键 词：直接线性变换法 钢结构 变形测量 摄影测量 

分 类 号：TU391[建筑科学—结构工程] P234.1[天文地球—摄影测量与遥感]