| 海岸带数字航空摄影质量控制与评价 |
| |
| 作者姓名： | 陈洁 高子弘 杜磊 李京 |
| |
| 作者单位： | 1.中国国土资源航空物探遥感中心,北京 1000832.中国科学院遥感与数字地球研究所,北京 100101 |
| |
| 基金项目： | 中国地质调查局“渤海海岸带航空物探遥感调查及应用(编号: DD20160150)” 项目资助 |
| |
| 摘 要： | 随着机载POS系统和数字航空摄影技术应用于海岸带地形测量,水线曲折、水域面积广阔、滩涂陡缓不一、具有潮汐变化等多因素给海岸带航空摄影质量控制带来诸多问题。因此,为了得到优质的调查结果,需对获取的航空摄影资料进行质量评价。通过分析航空摄影作业过程及获取成果的类别,从中选取能够全面衡量航空摄影质量的指标元素,对这些元素加以预先控制以提高最终成果质量; 基于专家经验法和数学统计法对各指标元素赋予权重,提出了全要素直接参与的加权法对航空摄影数据质量进行评价; 归纳了在获取与处理过程中影响质量的各子元素间的相关性,可利用该特点在今后的作业中进行有针对性的改善或控制,达到提高成果精度的目的。对渤海海岸带航空摄影数据的评价结果显示,整体质量优秀,与实际的制图结果吻合,成果精度满足海岸带地质调查需求,质量控制和评价方法可行。
|
| 关 键 词： | 海岸带 数字航空摄影 质量评价 加权法 质量元素 |
| 收稿时间： | 2017-06-26 |
Quality control and valuation for digital aerial photography in coastal zone |
| |
| Authors: | CHEN Jie GAO Zihong DU Lei LI Jing |
| |
| Institution: | 1. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China2. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China |
| |
| Abstract: | Coastal zone has the characteristics of wide distribution and tide changes, and it is difficult to find ground control points in coastal zone. However, using airborne POS and digital aerial photography technology could overcome these shortcomings of traditional methods. Because the quality of the digital aerial photography is the determinant of result accuracy and geological interpretation, it is necessary to evaluate the quality of acquired digital aerial photography data. This paper firstly analyzed the operation processes of aerial photography and categories of results, selected the index elements which can comprehensively measure the quality of aerial photography, and then controlled these elements to improve the final quality. Secondly, based on the weight given to these elements based on the expert experience method and mathematical statistics, the authors proposed a weighting method involving total factors to evaluate the quality of aerial photography. Finally the correlation between sub elements which influence the quality during the obtaining and processing procedure was identified. And this feature could be used to improve or control quality elements to achieve the purpose of enhancing the accuracy of results. The valuation for aerial remote sensing data of Bohai Sea coastal zone shows that the overall quality is excellent and it matches the actual mapping results. The precision of the results could meet the needs of the coastal geological survey, and the quality control and valuation methods are also feasible. |
| |
| Keywords: | coastal zone digital aerial photography quality valuation weighting method quality elements |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|
