AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2005.02.01 14:50 "[Tiff] Add watermark.", by David Harel
2005.02.01 15:34 "Re: [Tiff] Add watermark.", by Bob Friesenhahn
2005.02.01 19:05 "Re: [Tiff] Add watermark.", by David Harel
2005.02.01 19:12 "Re: [Tiff] Add watermark.", by Bob Friesenhahn
2005.02.05 21:30 "Re: [Tiff] Add watermark.", by David Harel
2005.02.06 03:52 "Re: [Tiff] Add watermark.", by Bob Friesenhahn

2005.02.01 19:12 "Re: [Tiff] Add watermark.", by Bob Friesenhahn

I don't know much myself but as I understand the requirements, we talk about adding a small picture at specific coordinates. I think the added picture should be somewhat translucent so that the original image will be clearly visible.

This is done via alpha composition. Libtiff does not directly support it. An image processing package like ImageMagick (http://www.imagemagick.org/), the Gimp (http://www.gimp.org/), or Photoshop, is what you will want to use for this purpose. All of these programs are able to read and write TIFF files.

Bob

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Bob Friesenhahn
bfriesen@simple.dallas.tx.us
http://www.simplesystems.org/users/bfriesen