DMCA
Digital Watermark Detection in Visual Multimedia Content (2010)
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BibTeX
@MISC{Meerwald10digitalwatermark,
author = {Peter Meerwald},
title = {Digital Watermark Detection in Visual Multimedia Content},
year = {2010}
}
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Abstract
Digital watermarking has been proposed as a technology to ensure copyright protection by embedding an imperceptible, yet detectable signal in visual multimedia content such as images or video. Watermark detection is an integral component of a watermarking system. This cumulative thesis addresses watermark detection problems in important application domains such as scalable multimedia, raw/demosaicked digital camera images, and 2D vector graphics with a distortion constraint. Generally, we rely on spread-spectrum watermark embedding and aim to improve performance of the system on the receiving side by taking into account peculiarities of the embedding domain and host signal modelling. A watermarked, scalable multimedia bitstream can be decoded in several quality and resolution layers to meet the demand of different devices. The watermark should be detectable in each layer, with increased detection performance in higher layers, yet without impairing the coding efficiency. We investigate watermarking of scalable JPEG2000, H.264/SVC and MZ-EZBC bit streams. A system for watermarking the raw image sensor data is constrained by the processing resources of the camera. We implement a spatial-domain embedding in camera firmware and
Keyphrases
visual multimedia content digital watermark detection watermark detection scalable jpeg2000 spatial-domain embedding distortion constraint coding efficiency detectable signal processing resource camera firmware several quality digital camera image integral component scalable multimedia bitstream raw image sensor data important application domain mz-ezbc bit stream increased detection performance cumulative thesis address digital watermarking resolution layer copyright protection vector graphic detection problem different device account peculiarity watermarking system scalable multimedia host signal modelling spread-spectrum watermark embedding
