BuildHistograms.m BuildPyramid.m CalculateDictionary.m CompilePyramid.m Example.m GenerateSiftDescriptors.m hist_isect.m hist_isect_c.c images ReadMe.txt sp_dist2.m sp_find_grid.m sp_find_sift_grid.m sp_kmeans.m sp_load_image.m sp_make_dir.m sp_normalize_sift.m