J. Strebeck’s scientific contributions

This article presents a new technique for filling voids in SRTM DEM data. Tests prove the increased effectiveness of DSF in filling SRTM voids compared to the F&F technique, especially at the problematic void interfaces. DSF gives better results by both visual and quantitative measures. Because of these performance improvements, DSF is now in use by NGA and its contractors in SRTM void filling. In addition to operations on SRTM datasets, DSF has application to other DEM-level void filling endeavors. Numerous combinations of elevation data can be used in the parent and fill surface roles.