Block bundle adjustment of Ikonos in-track images

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 - 2 m and - 3 m to - 4 m with maximum errors of - 6 m and - 10 m, respectively.