fix

Demo.cpp

@@ -306,9 +306,9 @@ int main(int argc, char * argv[])
 
             bgs->process(img_input, img_mask, img_bkgmodel); // by default, it shows automatically the foreground mask image
 
-//            //we save the bk gmodel
-//            std::string bkTestFileName = inputDir + "bk_"+TToolBox::mNzero(i)+".jpg";
-//            imwrite(bkTestFileName.c_str(),img_bkgmodel);
+            //we save the bk gmodel
+            std::string bkTestFileName = inputDir + "bk_"+TToolBox::mNzero(i)+".jpg";
+            imwrite(bkTestFileName.c_str(),img_bkgmodel);
         }
         else
         {