JeongHee Shim KiHee Park ByoungChul Ko Jae Yeal Nam X-Ray Image Classification and Retrieval Using Ensemble Combination of Visual Descriptors. 738-747 2009 PSIVT http://dx.doi.org/10.1007/978-3-540-92957-4_64 conf/psivt/2009 db/conf/psivt/psivt2009.html#ShimPKN09