Evaluation of Accuracy of 3 D model from QuickBird Stereo Imagery

In this study, we used a stereo-pair of QuickBird imagery of Yokosuka City, JAPAN and evaluated the 3D spatial accuracy and distortion by comparing coordinates measured from imagery with GPS survey results at 60 checkpoints. The components of average of error vector were 13.12m in longitude, 2.78m in latitude and 1.38m in vertical. One GCP improved the error vector to 0.74m in longitude and 0.79m in latitude. Using linear regression improved the vertical accuracy to 0.29m. The results show that a few GCP is enough to correct for topographical mapping. Considering the previous study on the discrimination of feature, the high-resolution satellite imagery is effective for topographic mapping.