Block bundle adjustment of Ikonos in-track images

摘要

This letter presents a block bundle adjustment process applied to four Ikonos Geo-product in-track images with few ground control points (GCPs) over a high mountainous area of Venezuela. Various configurations of block bundle adjustment (1-4 images and different GCPs) were evaluated with independent check points. Whatever the number of images, the block bundle adjustment results were consistent with planimetric errors of about +- 5 m to +- 7 m. Part of this error was due to the error of the ground data. The evaluation of the final ortho-mosaic with 1∶1000 vector lines gives an approximation of relative and absolute errors to be +-2m and +-3m to +-4m with maximum errors of +-6m and +-10m, respectively.