Method merge

src/com/cloudream/ishow/algorithm/FaceDetector.java:1038–1046

(final Bitmap layer1, final Bitmap layer2, final Bitmap layer3)

	
	// tried to use #LayerDrawable 
	public static Bitmap merge(final Bitmap layer1, final Bitmap layer2, final Bitmap layer3)
	{
		Bitmap bitmap = layer1.copy(Bitmap.Config.ARGB_8888, true);
		Canvas canvas = new Canvas(bitmap);
		canvas.drawBitmap(layer2, 0, 0, null);
		canvas.drawBitmap(layer3, 0, 0, null);
		
		return bitmap;
	}
	
	public static Bitmap merge(final Bitmap layers[])
	{