Image Control Point Design of Using PCI Geomatica V9.1 Ortho Processing Spot5 Satellite Image
SONG Yongliang (Institute of Surveying and Mapping,Department of Lands and Resource of Guangdong Province, Guangzhou 510500,China)
To explore the control point lay out scheme of Spot5 image orthorectification, to achieve a balance between mapping accuracy and economical benefit the number and distribution of control points are discussed from three aspects: mapping accuracy, gross error detection and locating and reliability of layout scheme. Experiment is done by making 1A level Spot5 image the second national land use investigation base map using PCI Geomatica V9.1. The experiment result implies using uniform distribution of 16 points or 25 points stationing plans,or even occasionally builds a group 9 points or 13 points stationing plans, mapping accuracy and reliability are satisfied. The 9 points or 13 points stationing plans save field work- load.
【CateGory Index】： P228.41