Clone a bitmap, or something like that

To avoid to load two times same picture, I would like to “clone” and apply a new blur filter to a picture I loaded on the screen via displayContainer.load(new URLRequest(“myPicture.jpg”)), see code below.
Load the picture isn’t the problem, but I can’t “clone”, let alone apply the blur filter to this cloned picture.

	var mapIntroLoader:Loader = new Loader();
		mapIntroLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, mapIntroLoaded);
		mapIntroLoader.load(new URLRequest("mapIntro.jpg"));
	var mapContainer_mc:Sprite = new Sprite();
		mapContainer_mc.addChild(mapIntroLoader);
		mainContainer_sp.addChild(mapContainer_mc);

Could someone, please, post a short example to show me how to clone and apply a filter? :h:

Thank very much, have a nice day…