If images are put into a PDF as embedded media, then they will be represented whole as PDF objects in the PDF file, even if they are obscured when the PDF is di

If images are put into a PDF as embedded media, then they will be represented whole as PDF objects in the PDF file, even if they are obscured when the PDF is displayed. Acrobat, among other utilities, allows these objects to be extracted. See, e.g., http://multivalent.sourceforge.net/Tools/pdf/Extract.html http://multivalent.sourceforge.net/Tools/pdf/Extract.html