I have the following...

com.lowagie.text.Document pdfdocument = new com.lowagie.text.Document();

               PdfWriter writer2 = PdfWriter.getInstance(pdfdocument, new FileOutputStream("test.pdf"));

               pdfdocument.open();

               PdfContentByte cb = writer2.getDirectContent();

               Graphics2D g2d = cb.createGraphics(PageSize.A4.width(), PageSize.A4.height());

               panel.paint(g2d);

               g2d.dispose();

               pdfdocument.close();

Now, I want to convert this to an Image and insert the

image into another PDF document.

How do I convert the document to an Image???