前方交会原理下的立体模型接边精度检查方法

A Junction Accuracy Check Method of Stereoscopic Model Based on Forward Intersection

针对立体模型接边精度的自动化检查问题,提出了一种基于前方交会的立体模型接边精度检查方法。该方法是在自动匹配或手动判刺获取同名点的基础上,利用前方交会技术获取对应的地面点坐标,并进行坐标转换和坐标差计算。文章通过坐标差的中误差、平均值等各类指标,分析评估接边精度,并采用多组实测数据进行实验验证。分析结果表明,该方法能够准确高效地检测立体影像间的接边精度情况,可为立体模型质量评价和后续数据处理分析提供良好的数据支撑。

In order to automatic measure the junction accuracy of the stereoscopic model,a method of junction accuracy detection based on forward intersection is put forward.The ground coordinate is obtained by forward intersection in that method based on the same point data acquired by hands or by automatic matching.Then,the geographical coordinate is transformed to the Gaussian coordinates,and the coordinate difference is calculated.The junction accuracy of the stereoscopic model is analyzed based on various indicators of the coordinate difference,such as mean square error,average value and so on.Using a set of measured data,it is proved that the method could check the junction accuracy of stereoscopic models efficiently and accurately,which could provide a good data base for later data processing and quality assessment.