摘要
就水利泥沙沉积建模研究中,为获取大量采样点的观测数据,并提升数据观测精度所需的高精度的测量方式进行了讨论。以数码相机作为观测设备,采用正直摄影方式,通过定点曝光,将曝光位置原有的观测相片外方位元素应用于后期观测照片解算处理中,解决无像控情况下的影像解算问题。通过利用同名点匹配纠正的方式,提高了采样点的解算精度,满足了建模的采样观测要求。
For obtaining a large number observed data of sampling points and improving measurement accuracy, the highaccuracy measurement method in sedimentation modeling of water conservancy engineering is discussed herein. Using a digital camera as observation device, taking normal photography and fixed-point exposure, and introducing the exterior orientation elements of original observed photos into the calculation of latter observed photos, the pictures are solved under the condition of non-photo control point. According to the matching and correcting by corresponding points, the calculation accuracy of sampling points are improved, and can meet the requirements of sampling observation of modeling .
出处
《水力发电》
北大核心
2012年第4期8-10,34,共4页
Water Power
基金
国家高技术研究发展计划(863计划)资助项目(2009AA121405)
关键词
测量
正直摄影
无像控
精度
建模
泥沙沉积
measurement
normal photography
non-photo control point
accuracy
modeling
sedimentation
