HTW Berlin Fachbereich 4 Internationaler Studiengang Internationale Medieninformatik (Bachelor) Aktuelles - Medien: Kryptographie Winter Term 2010/11

Lab 14: Watermarking

1. In your favorite programming language, implement a steganografic algorithm to put a watermark into pictures. First make a version that has an invisible watermark, for example, by hiding the watermark in the least significant bit. How can you extract the watermark again?
2. Now proceed to make a watermark that is visible, for example, with your copyright information on it. Include a snapshot of your results in your reports!

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   Copyright 2010 Dr. Hermann Thiel & Prof. Dr. Debora Weber-Wulff - All rights reserved.
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   This material is jointly prepared by Dr. Hermann Thiel and Prof. Dr. Debora Weber-Wulff. Much of the material comes from other sources and is denoted by the copyright notices on the individual pages