2017 Cilt 22 Sayı 1

Permanent URI for this collectionhttps://hdl.handle.net/11452/11961

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Browsing by Subject "Atmosferik düzeltme"

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    A comparison of atmospheric correction methods on hyperion imagery in forest areas
    (Uludağ Üniversitesi, 2017-02-28) Cetin, Mufit; Musaoglu, Nebiye; Kocal, Osman Hilmi
    The reflectance values recorded by Earth observing satellite sensors can be different from the surface reflectance values measured on the ground due to interference of gases and water vapor in the atmosphere. Therefore, atmospheric correction is a significant procedure to derive the true surface reflectance value during the processing of remotely sensed imagery especially with hyperspectral data. In this context, this study attempts to analyze the quality of the surface reflectance derived from EO-1 Hyperion hyperspectral imagery using the atmospheric radiative transfer (RT) models (FLAASH and ATCOR) and empirical line (EL) method. In the study, ground-based reflectance measurements derived from ASD FieldSpec spectroradiometer are used as reference to evaluate the quality of the retrieved surface reflectance. The results showed that EL and ATCOR methods achieved the best results for reducing some of the atmospheric effects, but FLAASH method resulted in strong anomalies in the corrected reflectance.