An overview of reversible watermarking techniques appeared in literature during the last five. Digital watermarking techniques have been indicated so far.reversible watermarking, reflecting recent progress, and provide some. reversible watermarking Figure 1: Flowcharts of conventional and reversible watermarking schemes process.from other types of digital watermarks, a reversible watermark has ...

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...

Most of data over the Internet today is hosted on outsourced third-party servers which are not trusted. Sometimes to be distributed other organizations or individuals for pre-agreed use. In both these scenarios susceptible malicious tampering so there a need some mechanism verify database integrity. Moreover, authentication process should able differentiate between valid updates and modificatio...

we propose a modified collage steganography using the modified fuzzy c-means algorithm on images. It consists of object images and cover image. Object image consists of the secret message which is to be embedded on the cover image. A proper cover image has to be chose based on the prior analysis. The fuzzy based approach has been formulated for each object image which is to be placed on cover i...

In this paper, an imperceptible, fragile text watermarking algorithm has been proposed. The font color of each alphabet in the text document is varied in the greyscale in accordance with a sine function. The amplitude for the same is generated using a hash function. The authenticity of the received document can be verified by comparing the actual color values of the letters in the document with...

This paper, we introduce a new digital watermarking algorithm using least significant bit (LSB). LSB is used because of its little effect on the image. This new algorithm is using the third and the fourth least significant bits (LSB) technique and shifting the watermark of pixel coordinates of image before embedding the watermark. The proposed algorithm is flexible depending on the length of th...

Over the use of Internet, digital watermarking provides the protection for multimedia data. In the contemporary days, misuse of multimedia data is done at a huge level and encryption of the sensitive data flowing through the network or Internet is one of the most important factors for the copyright issues. So, in order to save the information from being stolen or misused, digital watermarking t...

With the expanded use of biometric systems, the security of biometric trait is becoming increasingly important. When biometric images are transmitted through insecure channels or stored as a raw data, they become subject to the risk of being stolen, faked and attacked. Hence, it is imperative that robust and reliable means of protection are implemented. Various methods of data protection are av...

Watermarking has increased dramatically in recent years in the Internet and digital media. Watermarking is one of the powerful tools to protect copyright. Local image features have been widely used in watermarking techniques based on feature points. In various papers, the invariance feature has been used to obtain the robustness against attacks. The purpose of this research was based on local f...

Insertion of a text message, audio data or/and an image into another image or 3D model is called as a watermarking process. Watermarking has variety of applications like: Copyright Protection, Owner Identification, Copy Protection and Data Hiding etc., depending upon the type of watermark insertion algorithm. Watermark remains in the content after applying various attacks without any distortion...