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2008
Book Article
Titel
Watermarking small images
Titel Supplements
Applications, challenges, and approaches
Abstract
Digital watermarking has become a mature technology utilized in various application domains. This is especially true for digital image watermarking, where, compared to other media types like or video, the most proposals for algorithms as well as commercial applications are introduced. With respect to variety of embedding approaches, synchronization strategies as well as security and robustness evaluation methods digital image watermarking therefore can be seen as the most advanced watermarking technology. Still, when digital image watermarking is applied in real-world use sases, some challenges still exist. In our work, we identify and discuss one of these: Watermarking of small images, e.g. with the size of thumbnails. White these images have been ignored by most researchers as thev have been seen to be without value to be protected, usage scenarios today raise interest in the group of images. The protection of catalogue entries and eBay product photos is one obvious example for this. While the image itself may be of little values, its theft and usage by third parties can assist in fraud and forgery. We therefore provide an overview of applications, challenges and approaches to watermarking of small images. In addition, we discuss our recent optimizations of existing watermarking strategies for usage with small images.