2005.02.06 03:52 "Re: [Tiff] Add watermark.", by Bob Friesenhahn
Can I not simply add an image (I think on a strip)?
Of course you can, but all strips in the TIFF image are required to be the same length except for the last one. You would need some image data to fill in the portion of the strip which does not contain the "small picture". Otherwise you would need to do the math to blend your small picture on top of the existing image data.
The level of difficulty to add your small picture is much greater using only libtiff vs one of the other applications I mentioned.