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。为提高测量精度,我们采用直接线性变换法(DLT)进行数码相机的检校,将检校的相机在钢结构变形监测实验中使用,实际测量数据利用直接线性变换法(DLT)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2‰的效果。
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, and the method of direct linear transform to effectively weaken the influence of the instability of the interior and exterior orientation elements of digital camera as well as the conditions of environment. By doing so, the precision of the final results obtained is 2‰.
出处
《山东科学》
CAS
2005年第1期42-46,共5页
Shandong Science
基金
山东省科技攻关计划项目(003120602)。
