三维时间基线视差法在变形监测中的应用研究  

Research of 3D time baseline parallax method applied in deformation monitoring

作　　者：于承新[1] 巩建国[1] 陈明志[1] 张志军[1] 戚文静[1] 姜庆娜[1] 

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

出　　处：《山东建筑工程学院学报》2003年第3期26-29,共4页Journal of Shandong Institute of Architecture and Engineering

基　　金：山东省科技攻关计划项目(003120602)

摘　　要：利用数码相机进行钢结构的变形监测是对传统近景摄影方法的变革,但数码相机属于非测量相机,它没有框标及定向设备,摄影瞬间的内、外方位元素的初始值是无法得到的。因此,常规解法无法解决数码相机获取测量数据的计算处理问题,对此时间基线视差法有其特殊优势。利用三维时间基线视差法处理钢结构变形测量数据的解算方法,给出了实验结果。该方法考虑了分辨率、焦距以及外界环境条件的影响,采用有效的方法进行消除,取得了观测误差小于2/1000的结果。Using digital camera to monitor steel structure deformation is an innovation for traditional close shot photographic method. Different from photogrammetric camera, there are no frame mark and directional fixture in digital cameras, by which initial values of the inside and outside fix elements can't be got at the photograph instant. Time Baseline Parallax Method (TBPM) has advantages over conventional solution in disposal of measured data from digital cameras. This paper introduces the application of TBPM in disposal of digital cameras data for steel structure deformation and gives the experimental results. It takes the resolution, focus and error into account and makes use of effective methods to get rid of errors. As a result, the monitoring error is less than2.0×10-3.

关 键 词：三维时间基线视差法 钢结构 变形测量 近景摄影 

分 类 号：TU196.1[建筑科学—建筑理论]