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Title: The effect of pansharpening algorithms on the resulting orthoimagery
Authors: Agrafiotis, Panagiotis 
Georgopoulos, Andreas 
Karantzalos, K. 
Major Field of Science: Engineering and Technology
Field Category: Civil Engineering
Keywords: Accuracy;Digital surface model (DSM);Orthoimage;Pansharpening;Pleiades-1B
Issue Date: 1-Jan-2016
Source: 23rd International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Congress, ISPRS 2016, Prague, Czech Republic, 12 July 2016 through 19 July 2016
Conference: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Congress 
Abstract: This paper evaluates the geometric effects of pansharpening algorithms on automatically generated DSMs and thus on the resulting orthoimagery through a quantitative assessment of the accuracy on the end products. The main motivation was based on the fact that for automatically generated Digital Surface Models, an image correlation step is employed for extracting correspondences between the overlapping images. Thus their accuracy and reliability is strictly related to image quality, while pansharpening may result into lower image quality which may affect the DSM generation and the resulting orthoimage accuracy. To this direction, an iterative methodology was applied in order to combine the process described by Agrafiotis and Georgopoulos (2015) with different pansharpening algorithms and check the accuracy of orthoimagery resulting from pansharpened data. Results are thoroughly examined and statistically analysed. The overall evaluation indicated that the pansharpening process didn't affect the geometric accuracy of the resulting DSM with a 10m interval, as well as the resulting orthoimagery. Although some residuals in the orthoimages were observed, their magnitude cannot adversely affect the accuracy of the final orthoimagery.
Description: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, Volume 41, 2016, Pages 625-630
ISSN: 16821750
DOI: 10.5194/isprsarchives-XLI-B7-625-2016
Type: Conference Papers
Affiliation : Cyprus University of Technology 
National Technical University of Athens 
Appears in Collections:Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation

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