Accuracy Evaluation by GCP Acquisition Method in Bundle Adjustment for SPOT Imagery

摘要

This study looks into the positioning accuracy of SPOT imagery according to GCPs(ground control points) acquisition method used for different data format and for different land features. Suitable GCP acquisition method is presented in this paper for different data format and the accuracy limit for each case is also presented. Through analysis of digital image coordinates, it was confirmed that the least squares method of adjustment is effective for accuracy improvement and for reducing the number of interation.