In-depth investigations of parameters influencing the accuracy of orthoimages from high resolution satellites
Open access
Date
2006Type
- Conference Paper
ETH Bibliography
yes
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Abstract
Orthoimages are the most popular product from high spatial resolution satellite sensors. Various investigations, especially regarding Ikonos and Quickbird, have been published and achieved accuracies reported. However, these investigations are based on different input parameters (density and accuracy of DTM, number, distribution and accuracy of GCPs, sensor model, range of heights in the area, sensor elevation, type, amount and accuracy of information used to check the planimetric accuracy) and thepublished results are thus not comparable. Furthermore, the influence of the above mentioned parameters on the planimetric accuracy of the orthoimages has not been analysed using one common consistent dataset. In this work, we will try to cover this gap. In previous publications, we have presented a comparison of point positioning accuracies using various sensor models and different number and distribution of GCPs, so these aspects will not be treated in this work. Here, we have used in all cases as sensor model RPCs with a subsequent affine transformation and a small number of GCPs (8) with homogeneous distribution. The aspects that we analyse here is the influence of (a) the DTM, (b) the source and accuracy of GCPs, and (c) the sensor elevation. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000064519Publication status
publishedExternal links
Journal / series
International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesVolume
Pages / Article No.
Publisher
ISPRSEvent
Subject
Orthoimages; Accuracy analysis; High spatial resolution satellitesOrganisational unit
03220 - Grün, Armin
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ETH Bibliography
yes
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