In this paper, a novel set of features based on Quaternion Wavelet Transform (QWT) is
proposed for digital image forensics. Compared with Discrete Wavelet Transform (DWT) and …

Recognizing information about the origin of a digital image has been individuated as a
crucial task to be tackled by the image forensic scientific community. Understanding …

The aim of the work presented in this paper is to discriminate natural images (NI) and
computer generated graphics (CG). The texture differences are analyzed to the residual …

Many everyday activities involve the exchange of confidential information through the use of
a smartphone in mobility, ie, sending on e-mail, checking bank account, buying on-line …

It is now extremely easy to recapture high-resolution and high-quality images from LCD
(Liquid Crystal Display) screens. Recaptured image detection is an important digital forensic …

As computer graphics technology advances, it is becoming increasingly difficult to determine
whether a given picture was taken by camera or via computer graphics. In this work, we …

Digital retouching of face images is becoming more widespread due to the introduction of
software packages that automate the task. Several researchers have introduced algorithms …

Visual realism is defined as the extent to which an image appears to people as a photo
rather than computer generated. Assessing visual realism is important in applications like …

The past two decades have seen remarkable advances in photo-realistic rendering of
everything from inanimate objects to landscapes, animals, and humans. We previously …

The recaptured images forensics has drawn much attention in forensics community. The
technology can provide some evidences for copyright protection and protect the face …