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Spatial resolution assessment from real image data

Reulke, Ralf and Brunn, Andreas and Weichelt, Horst (2011) Spatial resolution assessment from real image data. 10th Annual Civil Commercial Imagery Evaluation Workshop sponsored by JACIE, 29.-31. Mär. 2011, Boulder, CO, USA.

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The radiometric and spatial characteristics of a remote sensing system specify the image quality. The determination of the image quality is carried out on specific resolution targets. The point spread function (PSF) is an essential parameter for characterizing the spatial imaging properties of the whole system. We present an approach for PSF determination using high-contrast edges found in the typical urban scenes. It is assumed that the PSF is described by a Gaussian. Instead of the PSF the edge spread function (ESF) was determined. For the investigations RapidEye multispectral orthophoto data (L3a) has been used. Clear transitions between bright and dark patches have been selected in the imagery. The analysis is carried out in a horizontal and vertical direction only. Because of the spectral dependence of the reflection properties, these transitions were examined for all of the five bands of the same image data. This presentation describes a special tool to determine the data quality based on PSF estimations of RapidEye image products. It is also shown that the determination of the influence of different image processing algorithms is possible.

Item URL in elib:https://elib.dlr.de/70957/
Document Type:Conference or Workshop Item (Speech)
Additional Information:http://calval.cr.usgs.gov/JACIE_files/JACIE11/Presentations/WedAM/1140_Reulke_JACIE_11.110.pdf
Title:Spatial resolution assessment from real image data
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Reulke, Ralfralf.reulke (at) dlr.deUNSPECIFIED
Brunn, AndreasRapidEye AGUNSPECIFIED
Weichelt, HorstRapidEye AGUNSPECIFIED
Date:March 2011
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:RapidEye system, image quality, modulation transfer function (MTF), point spread function (PSF), PSF determination
Event Title:10th Annual Civil Commercial Imagery Evaluation Workshop sponsored by JACIE
Event Location:Boulder, CO, USA
Event Type:international Conference
Event Dates:29.-31. Mär. 2011
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Optische Sensortechnologien (old)
Location: Berlin-Adlershof
Institutes and Institutions:Optical Information Systems
Deposited By: Dombrowski, Ute
Deposited On:24 Oct 2011 07:05
Last Modified:24 Oct 2011 07:05

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