Spatial Projection Rectification for Densifying Ground Control Points

Di Wu 1 +, Yanchun Liu 1, Lixin Guo 1 2, Fang Cheng 1 and Gaixiao Li 1 
1 Department of Hydrography and Cartography, Dalian Naval Academy, No. 667, Jiefang Road, Dalian, Liaoning Province, China
2 Surveying and Mapping Academy, Information Engineering University of the People’s Liberation Army, No. 66, Longhai Road, Zhengzhou, Henan Province, China

Abstract. The ground control points of marine and coastal remote sensing images could not be properly selected because of the special characteristics of the ocean, thus the accuracy of geometric rectification was restricted. A new geometric exact rectification method of spatial projection was put forward, and it could gain dense ground control points. The rectification principle and steps of this method were systematically studied, and the rectification model was researched.  It showed that the accuracy of spatial projection rectification model was 1.078 pixels from the experiment result. So it is an effective method to those remote sensing images lack of ground control points.

Keywords:  geometric exact rectification, spatial projection, rectification accuracy, ground control point, coastal zone, remote sensing image

In: Wan, Y. et al. (eds) Proceeding of the 8th international symposium on spatial accuracy assessment in natural resources and environmental sciences, World Academic Union (Press).

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