摘要
针对可视化方法求取过程中受人眼观察比对的个体差异性以及多波束散点数据可视化显示形式的双重影响,两多波束条带人眼对齐误差较大,直接影响最终校正参数的计算精度问题,该文提出了基于两步法的多波束校正参数可视化精准计算方法,引入了多波束条带数据的自动对齐判断。首先依据两个多波束条带数据的几何关系,进行校正参数的粗校正计算;然后基于粗校正计算的估值,以抽样偏差最小为依据自动判断两条带数据是否对齐,实现校正参数的自动精确校正计算。实验结果表明,两步法计算多波束校正参数避免人眼视觉对齐带来的误差,有效地提高了校正参数可视化计算的自动化程度和计算精度。
In the process of calculating the calibrating parameters of the multi-beam system,the visual alignment error of two multi-beam swaths will be larger due to the dual influence of the individual differences caused by human eye observation and the form of multi-beam scatter data visualization,which will directly affect the calculation accuracy of the final calibrating parameter.In view of this problem,a novel method used to calculate visually precise calibrating parameter of the multi-beam based on two-step method was proposed,which introduced the automatic alignment judgment of the multi-beam swaths.First of all,the valuation of the calibrating parameters were calculated based on the geometric relationship of two multi-beam swaths;then based on the valuation,whether two swaths alignment through the minimum sampling bias was determined automatically,and thus the automatic accurate calculation of the calibrating parameters was realized.Experimental results showed that the two-step method to calculate the multi-beam calibrating parameters could avoid the visual alignment error of the human eyes,effectively enhance the automation of the visual calibrating parameters calculation and computing accuracy.
作者
刘建勋
韩李涛
蒋利
阳凡林
LIU Jianxun;HAN Litao;JIANG Li;YANG Fanlin(College of Geomatics, Shandong University of Science and Technology, Qingdao,Shandong 266590, China;Key Laboratory of Surveying and Mapping Technology on Island and Reef, National Admistration of Surveying, Mapping and Geoinformation, Qingdao,Shandong 266590,China)
出处
《测绘科学》
CSCD
北大核心
2019年第4期95-101,145,共8页
Science of Surveying and Mapping
基金
国家自然科学基金项目(41376108)
山东省自然科学基金项目(ZR2017MD003)
关键词
多波束
参数校正
视觉对齐
两步法
可视计算
multi-beam
parameter calibration
visual alignment
two-step method
visual computation
