Publicaties
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Watermarking for large-scale video distribution through out-of-the-loop frame replacement Universiteit Gent
Forensic watermarking is used in large-scale video-distribution applications to track digital pirates after they illegally leak videos. Existing methods either have a high embedding complexity or have troubles providing imperceptibility and robustness. Therefore, this paper proposes a novel watermarking method that has a low embedding complexity, as well as sufficient imperceptibility and robustness. The main novelty is that frames are replaced ...
Rate-distortion-preserving forensic watermarking using quantization parameter variation Universiteit Gent
Watermarking enables the identification of digital pirates that illegally redistribute copyright-protected videos. One of the main challenges is for the watermark to be imperceptible, while not increasing the video bit rate. Additionally, the system should be robust to attacks that attempt to remove the watermark. Therefore, this paper proposes a robust watermarking technique that does not degrade the video quality nor negatively affect the ...
A Novel Video Watermarking Approach Based on Implicit Distortions Universiteit Gent
An industry-level blu-ray watermarking framework Universiteit Gent
Camcording-resistant forensic watermarking fallback system using secondary watermark signal Universiteit Gent
Forensic watermarking is used to track down digital pirates after they illegally redistribute video content. Although existing algorithms often resist common signal processing attacks, they are not always robust against camcording attacks. As a solution in the state of the art, registration methods are used to align the attacked video to the original one. However, watermark detection still fails when the quality is sufficiently decreased or when ...
Robust image content authentication using perceptual hashing and watermarking Vrije Universiteit Brussel
Perceptual hashing is a promising tool for multimedia content authentication. Digital watermarking is a convenient way of data hiding. By combining the two, we get a more efficient and versatile solution. In a typical scenario, multimedia data is sent from a server to a client. The corresponding hash value is embedded in the data. The data might undergo incidental distortion and malicious modification. In order to verify the authenticity of the ...
Reduced Reference Quality Assessment based on Watermarking and Perceptual Hashing Vrije Universiteit Brussel
The visual quality expected by the end-user of today's multimedia applications is ever increasing due to the raising availability of high-resolution cameras, HD and 3D screens and televisions. During production, transmission and rendering of the image/video material it is liable for quality degradation due to, amongst others, lossy (re)compression, transmission errors and suboptimal rendering. It is therefore essential to guard the perceptual ...
Design of an H.264/SVC resilient watermarking scheme Vrije Universiteit Brussel
The rapid dissemination of media technologies has lead to an increase of unauthorized copying and distribution of digital media. Digital watermarking, i.e. embedding information
in the multimedia signal in a robust and imperceptible manner, can tackle this problem. Recently, there has been a huge growth in the number of different terminals and connections
that can be used to consume multimedia. To tackle the resulting distribution ...
in the multimedia signal in a robust and imperceptible manner, can tackle this problem. Recently, there has been a huge growth in the number of different terminals and connections
that can be used to consume multimedia. To tackle the resulting distribution ...