The Development of a Land Use Change Detection Methodology for Mapping the Taita Hills, South-East Kenya: Radiometric Corrections
نویسندگان
چکیده
As a first stage in the development of a land use change detection methodology for the TAITA research project, an absolute atmospheric correction was applied to multi-temporal SPOT XS data using the proposed historical empirical line method (HELM). Based on a small verification sample, surface reflectance (Ps) was retrieved for all bands and all dates with an average RMSE better than 2%. Comparisons were made to simple DOS and COST atmospheric corrections, which derived accuracies of ~10%, but HELM was significantly better. The rugged terrain in the Taita Hills also required the SPOT imagery to be orthorectified and topographically normalized before it could be considered comparable.
منابع مشابه
Environmental change monitoring applying satellite and airborne remote sensing data in the Taita Hills, Kenya
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