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This paper presents a new watermarking framework, suitable for authentication of H.264 compressed videos. The authentication data is embedded as fragile, blind and erasable watermark with low video quality degradations. Because of using a fragile watermark, hard authentication is possible. In contrast to other approaches, the watermarking is done after the(More)
Current investigations in the area of 3D video systems are based on depth map sequences. They are used to determine the compatibility with conventional 2D video systems. Instead of transmitting or storing two 2D video sequences for each eye, 2D video and the appropriate depth information is delivered. If the viewer owns a standard TV set, only the video is(More)
In this paper, we present a new video watermarking approach which is robust to efficient video coding standards such as H.264/AVC. We show the contradiction between embedding watermarks in the irrelevant part of a video and using a lossy compression algorithm to reduce the video data rate. Because the compression algorithm removes irrelevant information,(More)
Distributed Video Coding (DVC) is a recent paradigm that offers emerging capabilities in contradiction to the established conventional video coding techniques. Based on the Slepian-Wolf (SW) and Wyner-Ziv (WZ) theorems, a DVC system has an outstanding low encoding complexity, by shifting the computational complex process of correlation exploration to the(More)
Authentication watermarking approaches can be classified into two kinds: fragile and semi-fragile. In contrast to the latter one, fragile watermarking does not tolerate modifications of any single bit of the watermarked data. Since the transmission of digital data often requires lossy compression, an authentication system should accept non-malicious(More)
The ongoing research on Distributed Video Coding (DVC) is focused on flexibility and increased rate distortion (RD) performance. Besides Slepian-Wolf (SW) coding and coder control, a good side information (SI) quality is essential for high RD performance. The SI is typically extracted by temporal inter-/extrapolation. Fast motion is still a challenge. Two(More)
Our paper proposes an enhanced video watermarking approach. The fundamental idea is to use geometric warping for watermarks with high predictable robustness to lossy compression. We explain the basic watermarking approach which uses a block based statistic (Normed Centre of Gravity-NCG) to describe the geometric structure of blocks. The NCG also is used to(More)
Common forward error correction is designed to correct substitution errors only. There is no detection of insertions/deletions. Such systems are usually employed in digital watermarking schemes. If watermark data is embedded selectively based on content features where desynchronization can occur during extraction, common error correction can result in(More)