Evaluation of brefcor BRDF effects correction for HYSPEX, CASI, and APEX imaging spectroscopy data

The correction of BRDF effects for airborne wide FOV imaging spectroscopy data is of interest for a consistent data processing and products generation. Recently, a new BRDF effects correction method (BREFCOR) has been implemented as additional processing step after the well-known atmospheric compensation workflow. This paper shows validation results of the method for sample data sets of HYSPEX, CASI, and APEX data. It can be shown that the method is able to deal with a broad variety of sensors and surface characteristics. The quality of the spectral albedo data products is substantially increased in terms of consistency for all data sets. Future potential improvements and additions for a better operational usability and for the processing of complete spectra are finally summarized.