With the rise in digitization of documents stored online, it is important to have a document
verification process. It involves customized verification and authentication of a document …

The availability of high quality copy machines provides a large amount of printed document
counterfeits. Numerous authentication techniques based on security printing, graphical …

In this paper, we propose a new theoretical framework for the data-hiding problem of digital
and printed text documents. We explain how this problem can be seen as an instance of the …

In this paper, we deal with the problem of authentication and tamper-proofing of text
documents that can be distributed in electronic or printed forms. We advocate the …

The concept of reversible conversion of color images to gray ones has been recently
introduced. Colors are mapped to textures and from the textures the receiver can recover the …

This paper improves a recently proposed hardcopy watermarking method by introducing
new approaches to decode the embedded information. The proposed method, coined as …

Graduation certificates issued by universities and other educational institutions are one of
the most important documents for a graduate. It is a proof of graduate's qualifications and …

Due to the development and availability of printing and scanning devices, the number of
forged/counterfeited valuable documents and product packages is increasing. Therefore …

Halftone dot orientation modulation has recently been proposed as a method for data hiding
in printed images. Extraction of data embedded with halftone orientation modulation is …

In this paper we present a feasibility study of printed document forensics based on
steganographic anti-counterfeiting markings using portable devices. We propose two system …