In this paper, an effective tamper detection and self-recovery algorithm based on singular
value decomposition (SVD) is proposed. This method generates two distinct tamper …

Fragile watermarking is one of the most effective approaches to insure the integrity of digital
images. In this paper, an efficient self-recovery and tamper localization scheme using fragile …

In the past few years, semi-fragile watermarking techniques have become increasingly
important to secure and verify the multimedia content and also to localize the tampered …

Due to the increasing number of forged images and possibilities of effortless digital
manipulations, certain organizations have started to focus on approaches that help preserve …

In this paper, the problems of detection of unauthorized changes to the content of a digital
image, determination of distorted parts and partial recovering of the content from the …

Digital watermarking was developed to protect copyright by discouraging the illegal copying
of digital content. On the other hand, recently, watermarking has also been used to verify the …

This paper proposes a novel digital watermark based on the gradient orientations of a digital
image. The specific features of a digital image can be expressed pixelwise using a 3-bit …

This paper proposes blind fragile watermarking scheme along with the pixel-wise technique.
Proposed scheme is capable enough in detecting tampered pixels and also able to provide …

Cryptographic algorithms are used to prevent the illegal manipulation of data. They are
divided into public-key cryptosystems and symmetric-key cryptosystems. Public-key …

Watermarking is a means of implanting data in the form of text, symbols or any credential
into the multimedia data such as image, audio or video. The conventional produces below …