var dpi:Number = 250;
var imageSnapShot:ImageSnapshot = ImageSnapshot.captureImage(TestCanvas, dpi, new JPEGEncoder(), false);
var byteInfo:ByteArray = imageSnapShot.data;
byteInfo.compress();

var imageFile:File = new File(File.applicationDirectory.nativePath + "/Test.jpg");
            var fileStream:FileStream = new FileStream();
            fileStream.open(imageFile, FileMode.WRITE);
            while(fileStream.writeBytes(byteInfo, 0, byteInfo.length))
            {

            };
            fileStream.close();
 ======================================================================
            var targetObject:DisplayObject = TestCanvas;

            var canvasWidth:int = targetObject.width;
            var canvasHeight:int = targetObject.height;

            var bitmapDataCP:BitmapData = new BitmapData(canvasWidth, canvasHeight, true, 0xFFFFFFFF);
            bitmapDataCP.draw(targetObject as IBitmapDrawable);
            targetBitmap = new Bitmap(bitmapDataCP);

            dobookEncoder = new DoBookJPGEncoder();
            dobookEncoder.PixelsPerIteration = 1000;
            dobookEncoder.addEventListener(DoBookCompleteEvent.DOBOOK_JPGENCODE_COMPLETE, testRndComplete, false, 0, true);
            dobookEncoder.encode(targetBitmap.bitmapData);
======================================================================
var scale:Number = 4;
            var myBMPD:BitmapData = new BitmapData( TestCanvas.width, TestCanvas.height);
            var myMatrix:Matrix = new Matrix( scale, 0, 0, scale );
            myBMPD.draw( TestCanvas, myMatrix );
            var bitmap : Bitmap = new Bitmap(myBMPD);
            var jpg:JPEGEncoder = new JPEGEncoder();
            var byteInfo:ByteArray = jpg.encode(myBMPD);

            var imageFile:File = new File(File.applicationDirectory.nativePath + "/Test.jpg");
            var fileStream:FileStream = new FileStream();
            fileStream.open(imageFile, FileMode.WRITE);
            while(fileStream.writeBytes(byteInfo, 0, byteInfo.length))
            {

            };
            fileStream.close();