S teganography is the art and science of hiding communication; a steganographic system thus embeds hidden content in unremarkable cover media so as not to arouse an eavesdropper’s suspicion. In the past, people used hidden tattoos or invisible ink to convey steganographic content. Today, computer and network technologies provide easy-to-use communication channels for steganography. Essentially,...

Steganography is the process of hiding one medium of communication (text, sound or image) within another. This paper will discuss the tools used to both hide and unhide (know as Steganalysis) information. A look at the history starting with Herodotus in ancient Greece describing secret messages written in wax on stone tablets, to world war two’s secret double meaning Nazi messages and British I...

Modeling the interpretation process of gestures generated by digital pen traces with a specialised agential architecture provides access to many advantages not normally available in routine programming methodologies. While speed of interpretation is an obvious plus point for the overall system performance, accurate and competent percept of the sketching environment provided by three autonomousl...

This paper studies digital ink artifacts students produced in the classroom and how instructors could use these artifacts in support of classroom instruction. Currently, instructor use of student-produced artifacts is limited by the cognitive load of real-time review and analysis during class. The goal of the study is to evaluate, in the context of a TabletPC-based classroom interaction system,...

MEMS technology has revoluntionized microfabrication, and the sensors and actuators industries. What is the state of the art of MEMS applications that use ceramic materials? what are major trends of development for the MEMS field in the future? this talk will present a broad and timely overview for conference attendees that address these twoquestions. The integrated circuit (IC) technology is t...

This paper presents the “Magic Table”: an augmented whiteboard surface for supporting creative meetings. The Magic Table uses computer vision for scanning and spatially organizing texts and drawings on the surface. Digitization of the physical ink is done by a-posteriori capture of the strokes. The digital information is organized through the manipulation of tokens (small plastic disks). The in...

The purpose of this study was to investigate the effect of type of alcohols and humectants in inks formulation, and the papers surface morphology on the ink-jet printing properties. In order to investigate the influence of alcohol and humectant types on printing properties, the optimum ink formulation from previous study, which contained C.I. Reactive Blue 21 Ink2 was formulated with different ...

One of the goals of ubiquitous computing is to allow users to naturally access various digital functions with daily physical artifacts like paper. Existing paper-digital integration systems, however, either sacrifice inherent paper flexibility or support very limited digital functionality on paper. This thesis explores how to enable rich pen-based interaction on paper without loss of the origin...

The design and implementation of systems that combine both the utilities of the digital world as well as intrinsic affordances of traditional artifacts are challenging. In this paper, we present „Quickies‟, an attempt to bring one of the most useful inventions of the 20 century into the digital age: the ubiquitous sticky notes. „Quickies‟ enriches the experience of using stickynotes by linking ...