Basic Blur BitmapData

Blur.as

var bmp:Bitmap;
var bmpdata:BitmapData;
var srect = new Rectangle(0, 0, stage.stageWidth, stage.stageHeight);
var blurF:BlurFilter = new BlurFilter(3, 3, BitmapFilterQuality.LOW);
var colorT:ColorTransform = new ColorTransform(1.0, 1.0, 1.0, 0.9);

bmpdata = new BitmapData(0, 0, srect.width, srect.height);
bmp = new Bitmap(bmpdata);

addEventListener(Event.ENTER_FRAME, onFrame);

function onFrame(e:Event) {
	bmpdata.applyFilter(bmpdata, srect, new Point(0, 0), blurF);
	bmpdata.colorTransform(srect, colorT);
	bmpdata.draw(this);
}