ICA-Proc

Proceedings of the ICA

ICA-Proc

Proc. Int. Cartogr. Assoc.

2570-2092

Copernicus Publications

Göttingen, Germany

10.5194/ica-proc-2-117-2019

Key Technology Research on Quality Inspection and Evaluation of Orthoimage Used in China's National Land Survey

Shang

Yaoling

¹ Zhao

Yousong

¹ Ma

Wei

¹ Wu

Xuan

¹ Wang

Jindong

¹ Luo

Fujun

¹ Yan

Qingqing

¹ Xu

Yongmin

National Quality Inspection and Testing Center for Surveying and Mapping Products, Beijing 100830, China

10 07 2019

117

2019

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The third national land survey is based on orthoimages with the results of the second national land survey to investigate the land classification, area and ownership of the national land in order to comprehensively understand the status of land use and land resources changes, and to improve the level of delicacy management for national nature resources. Therefore, an important task to ensure the completion of the third national land survey is to the develop a set of technical methods applicable to the quality inspection on orthoimage of the third national land survey.In view of the inapplicability of the existing inspection standards and technical methods of traditional basic surveying and mapping results on the orthoimage quality inspection of the third national land survey, The paper analyzes the orthoimage production characteristics and quality need of the third national land survey, improves the inspection quality elements, sampling strategy, inspection methods, evaluation methods and quality problem handling based on the existing inspection standards and technical methods by pilot, and puts forward the corresponding inspection standards and technical methods to promote the quality inspection of orthoimage on the third national land survey.Compared with the traditional method, the application of this method in 2865 inspection of county-level’s orthoimage of the third national land survey which covers the whole china, shows that, its inspection index is more reasonable, the inspection process is more scientific, the inspection efficiency is more efficient, and the direct cost of inspection is saved by 31%.