Long-strip georeferencing of quickbird imagery with minimal ground control

Abstract

The provision of high-quality ground control points (GCPs) is a prerequisite for 1-pixel level georeferencing of high-resolution satellite imagery (HRSI), irrespective of whether the GCPs are used to remove biases in RPCs or to support physical sensor orientation models. This is especially so in remote regions where the benefits to orthoimage generation from satellite imagery are most pronounced. As a means of drastically reducing the number of GCPs required to accurately georeference a multi-scene strip of HRSI, a sensor orientation model incorporating long-strip adjustment can be applied. Under this approach, the metadata for each separate scene within a sequence of images from the same or..