This paper presents applications of Synthetic Aperture Radar (SAR) image classification using morphological texture features. The texture features are based on morphological residues of opening and closing by reconstruction. It is shown that this set of features shows high 'robustness' to speckle perturbation in SAR images compared with those derived from traditionalmorphological residues. An algorithm based on estimating the divergence between and within classes was constructed in order to search for a discriminating feature subset. Higher classification accuracy was obtained by the optimized feature subset than by using other feature subsets derived from some well known texture characterization approaches. The classification accuracy was continuously improved by the introduction of post-processing filtering.