Digital video data distribution through the internet is becoming more common. Film trailers, video clips and even video footage from computer and video games are now seen as very powerful means to boost sales of the aforementioned products. These materials need to be protected to avoid copyright infringement issues. However, these materials are encoded at a low bit-rate to facilitate internet d...

In today's era protection of data is an important issue for owners and users. There are different ways of embedding watermark and different algorithms are used for this. According to the domain watermarking is of two types i.e .spatial domain and frequency domain. Different transforms are used for watermark embedding those are DWT,DCT etc. DWT is popular and commonly used transform method. Diff...

The technique of embedding a digital signal into an audio recording or image using techniques that render the signal imperceptible has received significant attention. Embedding an imperceptible, cryptographically secure signal, or watermark, is seen as a potential mechanism that may be used to prove ownership or detect tampering. While there has been a considerable amount of attention devoted t...

An audio watermarking system based on multiple echoes hiding is designed for frequency modulation (FM) broadcasting. The embedded watermarking information of 16 bits can be recovered from the receiver by recording the broadcast for any 1 second. On the premise of guaranteeing the high imperceptibility and robustness, the multiple echoes scheme we proposed has a higher capacity. The proposed sys...

We describe a Digital Watermarking system dedicated for embedding watermarks into 3D polygonal models. The system consists of three watermarking algorithms, one named Vertex Flood Algorithm (VFA) suitable for embedding fragile public readable watermarks with high capacity and offering a way of model authentication, one realizing affine invariant watermarks, named Affine Invariant Embedding (AIE...

In this paper, a wavelet domain robust watermarking technique for still images is presented. The proposed watermarking algorithm is based on 3 key aspects. First, message encoding is accomplished based on iterative error correction codes to reach channel capacity with reasonable decoder complexity. Secondly, watermark embedding is performed in the wavelet domain using a stochastically driven pe...

In spread spectrum based watermarking schemes, it is a challenging task to embed multiple bits of information into the host signal. M -ary modulation has been proposed as an effective approach to multibit watermarking. It has been proved that an M -ary modulation based watermarking system outperforms significantly a binary modulation based watermarking system. However, in the existing M -ary mo...

Zernike Moments (ZMs) are used in many image processing applications, due to their resistance against various signal processing and geometric attacks. Digital image watermarking is one of those application areas, where ZMs are widely used to insert and extract the watermark bits for digital media authentication. In all the existing ZM based watermarking techniques, magnitude of moments is used ...

Watermarking technique provides the possibility for copyright protection. Discrete cosine transform (DCT) is the most popular tool used in watermarking algorithm. But the watermarking algorithm based on DCT is not the most ideal choice in terms of the complexity and robustness. All phase discrete cosine biorthogonal transform (APDCBT) owns the characteristics of high frequency attenuation and g...

This paper presents the challenges for a robust digital image watermarking algorithm. Need for copyright protection in digital media has led to enormous growth in the field of Digital Image Watermarking whereby researchers are striving to come up with new ways of content protection. Recent developments in the field of watermarking though have provided new ways of protecting data yet there are m...