The advancement in technologies has created threats to content nobility and copyright protection. So, digital watermarking is possibly good technique in empowering the content protection. Different techniques have been proposed by the researchers till now for the security of the host image by embedding watermark in it. But, still the algorithms are not that much secure. To increase the security...

This paper proposes a novel robust digital color image watermarking algorithm which combines color image feature point extraction, shape image normalization and QPCA (quaternion principal component algorithm) basedwatermarking embedding (QWEMS) and extraction (QWEXS) schemes. The feature point extraction method called Mexican Hat wavelet scale interaction is used to select the points which can ...

In this paper histogram bin shifting based reversible data hiding algorithm for color images has been proposed. In this technique binary bits are embedded directly by addition and subtraction in two highest bin chosen and this process is repeated in modified histogram. A location map is generated by pre -processing to prevent the unnecessary overflow and underflow. All other pixels except two h...

We propose an efficient, imperceptible and highly robust digital watermarking scheme applied to color images for ownership authentication purposes. A hybrid domain for embedding the same watermark is used in this algorithm, which is composed by a couple of watermarking techniques based on spread spectrum and frequency domain. The visual quality is measured by three metrics called Peak Signal to...

This article details the conception, design, development and analysis of invisible, blind and robust color image watermarking algorithms based on the wavelet transform. Using error correcting codes, the watermarking algorithms are designed to be robust against intentional or unintentional attacks such as JPEG compression, additive white Gaussian noise, low pass filter and color attacks (hue, sa...

Abstract This paper proposes a new robust adaptive watermarking scheme based on dual-tree quaternion wavelet and artificial bee colony, wherein the host images watermark are both color images. Color in RGB space transformed into YCbCr space. Then, apply Arnold chaotic map their luminance components use colony optimization algorithm to generate embedding strength factor. Dual-tree transform is p...

This paper presents a fragile watermarking algorithm‘m for the protection of the integrity of color images with alpha channel. The system is able to identify modified areas with very high probability, even with small color or transparency changes. The main characteristic of the algorithm is the embedding of the watermark by modifying the alpha channel, leaving the color channels untouched and i...

Introduction:In this study, ECG signals have been embedded into medical images to create a novel blind watermarking method. The embedding is done when the original image is compressed using the EZW algorithm. The extraction process is performed at the decompression time of the watermarked image. Materials and Methods: The multi-resolution watermarking with a secret key algorithm developed in th...

With the rapid development of information technology and Internet technology, people can easily exchange transmit digital information, which not only brings convenience to people's work life, but also rampant piracy media. In face temptation that pirated media obtain huge benefits, some are desperate steal works without copyright sell spread them at will. this case, protection anti-theft versio...

While watermarking algorithms have been developed for many types of digital content, little work has been done to develop watermarking algorithms for the class of map and chart images, despite their relative value. These images are generally of high resolution, have large areas of homogeneous pixels and are color-mapped or binary. These characteristics impede the use of watermarking algorithms ...