%% Show images in dataset
directories = {'Faces','Motorbikes'}; nd = size(directories,2);

for d=1:nd,
    dir_name = directories{d};
    dir_cont = dir(dir_name);
    for f=3:length(dir_cont),
        file_name = dir_cont(f).name;
        if length(findstr(file_name,'jpg'))>0,
            ima = imread([dir_name '/' file_name],'jpg');
            figure(1); imagesc(ima); colormap(gray);
            pause(0.2);
        end;
    end;
end;